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Viggiano P, Gaudiomonte M, Procoli U, Micelli Ferrari L, Borrelli E, Boscia G, Ferrara A, De Vitis F, Scalise G, Albano V, Alessio G, Boscia F. Short-Term Morpho-Functional Changes before and after Strabismus Surgery in Children Using Structural Optical Coherence Tomography: A Pilot Study. Vision (Basel) 2024; 8:21. [PMID: 38651442 PMCID: PMC11036279 DOI: 10.3390/vision8020021] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2024] [Revised: 04/08/2024] [Accepted: 04/15/2024] [Indexed: 04/25/2024] Open
Abstract
PURPOSE To evaluate the immediate alterations in the thickness of the macular ganglion cell-inner plexiform layer (mGCIPL), peripapillary retinal nerve fiber layer (RNFL), inner retinal layer (IRL), and outer retinal layer (ORL) using spectral domain optical coherence tomography (SD-OCT) subsequent to strabismus surgery in pediatric patients diagnosed with horizontal esotropia. METHODS Twenty-eight eyes from twenty-one child patients who had undergone uncomplicated horizontal rectus muscle surgery due to strabismus were included. Measurements of RNFL, mGCL-IPL, IRL, and ORL using structural OCT were conducted both before the surgery and one month after the surgical procedure. Importantly, a control group comprising 14 healthy eyes, matched for age and significant refractive error (<3.00 diopters), was included in the current analysis. RESULTS Our analysis indicated no significant disparity before and after surgery in terms of best-corrected visual acuity (BCVA), RNFL, IRL, and ORL. Conversely, concerning the macular ganglion cell layer-inner plexiform layer analysis, a substantial increase in mGCL-IPL was observed following the surgical intervention. The mean mGCL-IPL measured 60.8 ± 9.2 μm at baseline and 66.1 ± 13.2 μm one month after the surgery (p = 0.026). Notably, comparison between the strabismus group at baseline and the healthy group revealed a significant reduction in mGCL-IPL in the strabismus group (60.8 ± 9.2) compared to the healthy control group (68.3 ± 7.2; p = 0.014). CONCLUSIONS Following strabismus surgery, our observations pointed towards a thickening of the mGCL-IPL layer, which is likely attributable to transient local inflammation. Additionally, we identified a significant differentiation in the mGCL-IPL complex between the pediatric patient group with strabismus and the control group.
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Affiliation(s)
- Pasquale Viggiano
- Department of Translational Biomedicine Neuroscience, University of Bari “Aldo Moro”, 70125 Bari, Italy; (M.G.); (L.M.F.); (G.B.); (A.F.); (F.D.V.); (G.S.); (V.A.); (G.A.); (F.B.)
| | - Marida Gaudiomonte
- Department of Translational Biomedicine Neuroscience, University of Bari “Aldo Moro”, 70125 Bari, Italy; (M.G.); (L.M.F.); (G.B.); (A.F.); (F.D.V.); (G.S.); (V.A.); (G.A.); (F.B.)
| | - Ugo Procoli
- Department of Translational Biomedicine Neuroscience, University of Bari “Aldo Moro”, 70125 Bari, Italy; (M.G.); (L.M.F.); (G.B.); (A.F.); (F.D.V.); (G.S.); (V.A.); (G.A.); (F.B.)
| | - Luisa Micelli Ferrari
- Department of Translational Biomedicine Neuroscience, University of Bari “Aldo Moro”, 70125 Bari, Italy; (M.G.); (L.M.F.); (G.B.); (A.F.); (F.D.V.); (G.S.); (V.A.); (G.A.); (F.B.)
| | - Enrico Borrelli
- Department of Surgical Sciences, University of Turin, 10124 Turin, Italy;
- Department of Ophthalmology, “City of Health and Science” Hospital, 10124 Turin, Italy
| | - Giacomo Boscia
- Department of Translational Biomedicine Neuroscience, University of Bari “Aldo Moro”, 70125 Bari, Italy; (M.G.); (L.M.F.); (G.B.); (A.F.); (F.D.V.); (G.S.); (V.A.); (G.A.); (F.B.)
| | - Andrea Ferrara
- Department of Translational Biomedicine Neuroscience, University of Bari “Aldo Moro”, 70125 Bari, Italy; (M.G.); (L.M.F.); (G.B.); (A.F.); (F.D.V.); (G.S.); (V.A.); (G.A.); (F.B.)
| | - Fabio De Vitis
- Department of Translational Biomedicine Neuroscience, University of Bari “Aldo Moro”, 70125 Bari, Italy; (M.G.); (L.M.F.); (G.B.); (A.F.); (F.D.V.); (G.S.); (V.A.); (G.A.); (F.B.)
| | - Gemma Scalise
- Department of Translational Biomedicine Neuroscience, University of Bari “Aldo Moro”, 70125 Bari, Italy; (M.G.); (L.M.F.); (G.B.); (A.F.); (F.D.V.); (G.S.); (V.A.); (G.A.); (F.B.)
| | - Valeria Albano
- Department of Translational Biomedicine Neuroscience, University of Bari “Aldo Moro”, 70125 Bari, Italy; (M.G.); (L.M.F.); (G.B.); (A.F.); (F.D.V.); (G.S.); (V.A.); (G.A.); (F.B.)
| | - Giovanni Alessio
- Department of Translational Biomedicine Neuroscience, University of Bari “Aldo Moro”, 70125 Bari, Italy; (M.G.); (L.M.F.); (G.B.); (A.F.); (F.D.V.); (G.S.); (V.A.); (G.A.); (F.B.)
| | - Francesco Boscia
- Department of Translational Biomedicine Neuroscience, University of Bari “Aldo Moro”, 70125 Bari, Italy; (M.G.); (L.M.F.); (G.B.); (A.F.); (F.D.V.); (G.S.); (V.A.); (G.A.); (F.B.)
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He Y, Carass A, Liu Y, Calabresi PA, Saidha S, Prince JL. Longitudinal deep network for consistent OCT layer segmentation. BIOMEDICAL OPTICS EXPRESS 2023; 14:1874-1893. [PMID: 37206119 PMCID: PMC10191669 DOI: 10.1364/boe.487518] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/10/2023] [Revised: 03/11/2023] [Accepted: 03/17/2023] [Indexed: 05/21/2023]
Abstract
Retinal layer thickness is an important bio-marker for people with multiple sclerosis (PwMS). In clinical practice, retinal layer thickness changes in optical coherence tomography (OCT) are widely used for monitoring multiple sclerosis (MS) progression. Recent developments in automated retinal layer segmentation algorithms allow cohort-level retina thinning to be observed in a large study of PwMS. However, variability in these results make it difficult to identify patient-level trends; this prevents patient specific disease monitoring and treatment planning using OCT. Deep learning based retinal layer segmentation algorithms have achieved state-of-the-art accuracy, but the segmentation is performed on each individual scan without utilizing longitudinal information, which can be important in reducing segmentation error and reveal subtle changes in retinal layers. In this paper, we propose a longitudinal OCT segmentation network which achieves more accurate and consistent layer thickness measurements for PwMS.
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Affiliation(s)
- Yufan He
- Dept. of Electrical and Computer Engineering, The Johns Hopkins University, Baltimore, MD 21218, USA
| | - Aaron Carass
- Dept. of Electrical and Computer Engineering, The Johns Hopkins University, Baltimore, MD 21218, USA
| | - Yihao Liu
- Dept. of Electrical and Computer Engineering, The Johns Hopkins University, Baltimore, MD 21218, USA
| | - Peter A. Calabresi
- Dept. of Neurology, The Johns Hopkins University School of Medicine, MD 21287, USA
| | - Shiv Saidha
- Dept. of Neurology, The Johns Hopkins University School of Medicine, MD 21287, USA
| | - Jerry L. Prince
- Dept. of Electrical and Computer Engineering, The Johns Hopkins University, Baltimore, MD 21218, USA
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von der Emde L, Saßmannshausen M, Morelle O, Rennen G, Holz FG, Wintergerst MWM, Ach T. Reliability of Retinal Layer Annotation with a Novel, High-Resolution Optical Coherence Tomography Device: A Comparative Study. Bioengineering (Basel) 2023; 10:bioengineering10040438. [PMID: 37106625 PMCID: PMC10136209 DOI: 10.3390/bioengineering10040438] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2023] [Revised: 03/24/2023] [Accepted: 03/25/2023] [Indexed: 04/03/2023] Open
Abstract
Optical coherence tomography (OCT) enables in vivo diagnostics of individual retinal layers in the living human eye. However, improved imaging resolution could aid diagnosis and monitoring of retinal diseases and identify potential new imaging biomarkers. The investigational high-resolution OCT platform (High-Res OCT; 853 nm central wavelength, 3 µm axial-resolution) has an improved axial resolution by shifting the central wavelength and increasing the light source bandwidth compared to a conventional OCT device (880 nm central wavelength, 7 µm axial-resolution). To assess the possible benefit of a higher resolution, we compared the retest reliability of retinal layer annotation from conventional and High-Res OCT, evaluated the use of High-Res OCT in patients with age-related macular degeneration (AMD), and assessed differences of both devices on subjective image quality. Thirty eyes of 30 patients with early/intermediate AMD (iAMD; mean age 75 ± 8 years) and 30 eyes of 30 age-similar subjects without macular changes (62 ± 17 years) underwent identical OCT imaging on both devices. Inter- and intra-reader reliability were analyzed for manual retinal layer annotation using EyeLab. Central OCT B-scans were graded for image quality by two graders and a mean-opinion-score (MOS) was formed and evaluated. Inter- and intra-reader reliability were higher for High-Res OCT (greatest benefit for inter-reader reliability: ganglion cell layer; for intra-reader reliability: retinal nerve fiber layer). High-Res OCT was significantly associated with an improved MOS (MOS 9/8, Z-value = 5.4, p < 0.01) mainly due to improved subjective resolution (9/7, Z-Value 6.2, p < 0.01). The retinal pigment epithelium drusen complex showed a trend towards improved retest reliability in High-Res OCT in iAMD eyes but without statistical significance. Improved axial resolution of the High-Res OCT benefits retest reliability of retinal layer annotation and improves perceived image quality and resolution. Automated image analysis algorithms could also benefit from the increased image resolution.
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Affiliation(s)
- Leon von der Emde
- Department of Ophthalmology, University Hospital Bonn, 53127 Bonn, Germany
| | | | - Olivier Morelle
- B-IT and Institut for Informatics, Universität Bonn, 53127 Bonn, Germany
| | - Geena Rennen
- Department of Ophthalmology, University Hospital Bonn, 53127 Bonn, Germany
| | - Frank G. Holz
- Department of Ophthalmology, University Hospital Bonn, 53127 Bonn, Germany
| | | | - Thomas Ach
- Department of Ophthalmology, University Hospital Bonn, 53127 Bonn, Germany
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Lu A, Zimmermann HG, Specovius S, Motamedi S, Chien C, Bereuter C, Lana-Peixoto MA, Fontenelle MA, Ashtari F, Kafieh R, Dehghani A, Pourazizi M, Pandit L, D'Cunha A, Kim HJ, Hyun JW, Jung SK, Leocani L, Pisa M, Radaelli M, Siritho S, May EF, Tongco C, De Sèze J, Senger T, Palace J, Roca-Fernández A, Leite MI, Sharma SM, Stiebel-Kalish H, Asgari N, Soelberg KK, Martinez-Lapiscina EH, Havla J, Mao-Draayer Y, Rimler Z, Reid A, Marignier R, Cobo-Calvo A, Altintas A, Tanriverdi U, Yildirim R, Aktas O, Ringelstein M, Albrecht P, Tavares IM, Bichuetti DB, Jacob A, Huda S, Soto de Castillo I, Petzold A, Green AJ, Yeaman MR, Smith TJ, Cook L, Paul F, Brandt AU, Oertel FC. Astrocytic outer retinal layer thinning is not a feature in AQP4-IgG seropositive neuromyelitis optica spectrum disorders. J Neurol Neurosurg Psychiatry 2022; 93:188-195. [PMID: 34711650 PMCID: PMC8785057 DOI: 10.1136/jnnp-2021-327412] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/24/2021] [Accepted: 09/26/2021] [Indexed: 11/21/2022]
Abstract
BACKGROUND Patients with anti-aquaporin-4 antibody seropositive (AQP4-IgG+) neuromyelitis optica spectrum disorders (NMOSDs) frequently suffer from optic neuritis (ON) leading to severe retinal neuroaxonal damage. Further, the relationship of this retinal damage to a primary astrocytopathy in NMOSD is uncertain. Primary astrocytopathy has been suggested to cause ON-independent retinal damage and contribute to changes particularly in the outer plexiform layer (OPL) and outer nuclear layer (ONL), as reported in some earlier studies. However, these were limited in their sample size and contradictory as to the localisation. This study assesses outer retinal layer changes using optical coherence tomography (OCT) in a multicentre cross-sectional cohort. METHOD 197 patients who were AQP4-IgG+ and 32 myelin-oligodendrocyte-glycoprotein antibody seropositive (MOG-IgG+) patients were enrolled in this study along with 75 healthy controls. Participants underwent neurological examination and OCT with central postprocessing conducted at a single site. RESULTS No significant thinning of OPL (25.02±2.03 µm) or ONL (61.63±7.04 µm) were observed in patients who were AQP4-IgG+ compared with patients who were MOG-IgG+ with comparable neuroaxonal damage (OPL: 25.10±2.00 µm; ONL: 64.71±7.87 µm) or healthy controls (OPL: 24.58±1.64 µm; ONL: 63.59±5.78 µm). Eyes of patients who were AQP4-IgG+ (19.84±5.09 µm, p=0.027) and MOG-IgG+ (19.82±4.78 µm, p=0.004) with a history of ON showed parafoveal OPL thinning compared with healthy controls (20.99±5.14 µm); this was not observed elsewhere. CONCLUSION The results suggest that outer retinal layer loss is not a consistent component of retinal astrocytic damage in AQP4-IgG+ NMOSD. Longitudinal studies are necessary to determine if OPL and ONL are damaged in late disease due to retrograde trans-synaptic axonal degeneration and whether outer retinal dysfunction occurs despite any measurable structural correlates.
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Affiliation(s)
- Angelo Lu
- Experimental and Clinical Research Center, Max Delbrück Center for Molecular Medicine and Charité - Universitätsmedizin Berlin, corporate member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Berlin, Germany
- NeuroCure Clinical Research Center, Charité - Universitätsmedizin Berlin, corporate member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Berlin, Germany
| | - Hanna G Zimmermann
- Experimental and Clinical Research Center, Max Delbrück Center for Molecular Medicine and Charité - Universitätsmedizin Berlin, corporate member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Berlin, Germany
- NeuroCure Clinical Research Center, Charité - Universitätsmedizin Berlin, corporate member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Berlin, Germany
| | - Svenja Specovius
- Experimental and Clinical Research Center, Max Delbrück Center for Molecular Medicine and Charité - Universitätsmedizin Berlin, corporate member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Berlin, Germany
- NeuroCure Clinical Research Center, Charité - Universitätsmedizin Berlin, corporate member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Berlin, Germany
| | - Seyedamirhosein Motamedi
- Experimental and Clinical Research Center, Max Delbrück Center for Molecular Medicine and Charité - Universitätsmedizin Berlin, corporate member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Berlin, Germany
- NeuroCure Clinical Research Center, Charité - Universitätsmedizin Berlin, corporate member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Berlin, Germany
| | - Claudia Chien
- Experimental and Clinical Research Center, Max Delbrück Center for Molecular Medicine and Charité - Universitätsmedizin Berlin, corporate member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Berlin, Germany
- NeuroCure Clinical Research Center, Charité - Universitätsmedizin Berlin, corporate member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Berlin, Germany
| | - Charlotte Bereuter
- Experimental and Clinical Research Center, Max Delbrück Center for Molecular Medicine and Charité - Universitätsmedizin Berlin, corporate member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Berlin, Germany
- NeuroCure Clinical Research Center, Charité - Universitätsmedizin Berlin, corporate member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Berlin, Germany
| | - Marco A Lana-Peixoto
- CIEM MS Research Center, University of Minas Gerais State, Medical School, Belo Horizonte, Brazil
| | | | - Fereshteh Ashtari
- Kashani MS Center, Isfahan University of Medical Sciences, Isfahan, Iran (the Islamic Republic of)
| | - Rahele Kafieh
- School of Advanced Technologies in Medicine, Medical Image and Signal Processing Research Center, Isfahan University of Medical Sciences, Isfahan, Iran (the Islamic Republic of)
| | - Alireza Dehghani
- Isfahan Eye Research Center, Department of Ophthalmology, Isfahan University of Medical Sciences, Isfahan, Iran (the Islamic Republic of)
| | - Mohsen Pourazizi
- Isfahan Eye Research Center, Department of Ophthalmology, Isfahan University of Medical Sciences, Isfahan, Iran (the Islamic Republic of)
| | - Lekha Pandit
- Center for Advanced Neurological Research, Nitte University, Mangalore, Karnataka, India
| | - Anitha D'Cunha
- Center for Advanced Neurological Research, Nitte University, Mangalore, Karnataka, India
| | - Ho Jin Kim
- Department of Neurology, National Cancer Center Korea, Goyang-si, Korea (the Republic of)
| | - Jae-Won Hyun
- Department of Neurology, National Cancer Center Korea, Goyang-si, Korea (the Republic of)
| | - Su-Kyung Jung
- Department of Opthalmology, Research Institute and Hospital of National Cancer Center, Goyang, Korea (the Republic of)
| | - Letizia Leocani
- Experimental Neurophysiology Unit, Institute of Experimental Neurology (INSPE) Scientific Institute, Hospital San Raffaele and University Vita-Salute San Raffaele, Milano, Italy
| | - Marco Pisa
- Experimental Neurophysiology Unit, Institute of Experimental Neurology (INSPE) Scientific Institute, Hospital San Raffaele and University Vita-Salute San Raffaele, Milano, Italy
| | - Marta Radaelli
- Experimental Neurophysiology Unit, Institute of Experimental Neurology (INSPE) Scientific Institute, Hospital San Raffaele and University Vita-Salute San Raffaele, Milano, Italy
| | - Sasitorn Siritho
- Division of Neurology, Department of Medicine, Siriraj Hospital and Bumrungrad International Hospital, Bangkok, Thailand
| | - Eugene F May
- Swedish Neuroscience Institute Neuro-Ophthalmology, Seattle, Washington, USA
| | - Caryl Tongco
- Swedish Neuroscience Institute Neuro-Ophthalmology, Seattle, Washington, USA
| | - Jérôme De Sèze
- Department of Neurology, Neurology Service, University Hospital of Strasbourg, Strasbourg, France
| | - Thomas Senger
- Department of Neurology, Neurology Service, University Hospital of Strasbourg, Strasbourg, France
| | - Jacqueline Palace
- Department of Neurology, Oxford University Hospitals NHS Trust, Oxford, Oxfordshire, UK
| | | | - Maria Isabel Leite
- Department of Neurology, Oxford University Hospitals NHS Trust, Oxford, Oxfordshire, UK
| | - Srilakshmi M Sharma
- Department of Ophthalmology, Oxford University Hospitals NHS Trust, Oxford, Oxfordshire, UK
| | - Hadas Stiebel-Kalish
- Neuro-Opthalmology Division, Department of Opthalmology, Rabin Medical Center, Petah Tikva, Israel
- Sackler School of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - Nasrin Asgari
- Department of Neurology Slagelse, Institutes of Regional Health Research andMolecular Medicine, University of Southern Denmark, Odense, Syddanmark, Denmark
| | | | - Elena H Martinez-Lapiscina
- Hospital Clinic of Barcelona-Institut d'Investigacions, Biomèdiques August Pi Sunyer, University of Barcelona, Barcelona, Spain
| | - Joachim Havla
- Institute of Clinical Neuroimmunology, LMU Hospital, Ludwig-Maximilians-Universitat Munchen, Munich, Germany
| | - Yang Mao-Draayer
- Department of Neurology, University of Michigan Medical School, Ann Arbor, Michigan, USA
| | - Zoe Rimler
- NYU Multiple Sclerosis Comprehensive Care Center, Department of Neurology, NYU, New York, New York, USA
| | - Allyson Reid
- NYU Multiple Sclerosis Comprehensive Care Center, Department of Neurology, NYU, New York, New York, USA
| | - Romain Marignier
- Neurology, Multiple Sclerosis, Myelin Disorders and Neuroinflammation, Hospital for Neurology Pierre Wertheimer, Lyon, France
| | - Alvaro Cobo-Calvo
- Neurology, Multiple Sclerosis, Myelin Disorders and Neuroinflammation, Hospital for Neurology Pierre Wertheimer, Lyon, France
- Centre d'Esclerosi Múltiple de Catalunya (Cemcat). Department of Neurology/Neuroimmunology, Universitat Autònoma de Barcelona, Barcelona, Spain
| | - Ayse Altintas
- Department of Neurology, Koc University Research Center for Translational Medicine (KUTTAM), Koc University School of Medicine, Istanbul, Turkey
| | - Uygur Tanriverdi
- Cerrahpaşa Faculty of Medicine, Department of Neurology, Istanbul University-Cerrahpaşa, Istanbul, Turkey
| | - Rengin Yildirim
- Department of Ophthalmology, Cerrahpasa Medical Faculty, Istanbul Universitesi, Fatih, Turkey
| | - Orhan Aktas
- Department of Neurology, Medical Faculty, Heinrich-Heine-Universitat Dusseldorf, Dusseldorf, Nordrhein-Westfalen, Germany
| | - Marius Ringelstein
- Department of Neurology, Medical Faculty, Heinrich-Heine-Universitat Dusseldorf, Dusseldorf, Nordrhein-Westfalen, Germany
- Department of Neurology, Center for Neurology and Neuropsychiatry, LVR-Klinikum, Heinrich-Heine-Universitat Dusseldorf, Dusseldorf, Germany
| | - Philipp Albrecht
- Department of Neurology, Medical Faculty, Heinrich-Heine-Universitat Dusseldorf, Dusseldorf, Nordrhein-Westfalen, Germany
| | - Ivan Maynart Tavares
- Department of Ophthalmology and Visual Sciences, Escola Paulista de Medicina, Universidade Federal de São Paulo, São Paulo, Brazil
| | - Denis Bernardi Bichuetti
- Department of Neurology and Neurosurgery, Escola Paulista de Medicina, Universidade Federal de São Paulo, Sao Paulo, Brazil
| | - Anu Jacob
- The Walton Centre NHS Foundation Trust, Liverpool, UK
| | - Saif Huda
- The Walton Centre NHS Foundation Trust, Liverpool, UK
| | - Ibis Soto de Castillo
- Department of Neurology, Hospital Clinico de Maracaibo, Maracaibo, Venezuela, Bolivarian Republic of
| | - Axel Petzold
- Moorfield's Eye Hospital, The National Hospital for Neurology and Neurosurgery, Queen Square Institute of Neurology, University College London, London, UK
| | - Ari J Green
- Department of Neurology, University of California San Francisco, San Francisco, California, USA
| | - Michael R Yeaman
- Department of Medicine, Harbor-University of California at Los Angeles (UCLA) Medical Center, and Lundquist Institute for Biomedical Innovation, Torrance, California, USA
- Department of Medicine, David Geffen School of Medicine, UCLA, Los Angeles, California, USA
| | - Terry J Smith
- Departments of Ophthalmology and Visual Sciences, Kellogg Eye Center, Ann Arbor, Michigan, USA
- Department of Metabolism, Endocrine and Diabetes, Department of Internal Medicine, University of Michigan Medical School, Ann Arbor, Michigan, USA
| | - Lawrence Cook
- Department of Pediatrics, University of Utah Health, Salt Lake City, Utah, USA
| | - Friedemann Paul
- Experimental and Clinical Research Center, Max Delbrück Center for Molecular Medicine and Charité - Universitätsmedizin Berlin, corporate member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Berlin, Germany
- NeuroCure Clinical Research Center, Charité - Universitätsmedizin Berlin, corporate member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Berlin, Germany
- Department of Neurology, Charité - Universitätsmedizin Berlin, corporate member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Berlin, Germany
| | - Alexander U Brandt
- Experimental and Clinical Research Center, Max Delbrück Center for Molecular Medicine and Charité - Universitätsmedizin Berlin, corporate member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Berlin, Germany
- NeuroCure Clinical Research Center, Charité - Universitätsmedizin Berlin, corporate member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Berlin, Germany
- Department of Neurology, University of California Irvine, Irvine, California, USA
| | - Frederike Cosima Oertel
- Experimental and Clinical Research Center, Max Delbrück Center for Molecular Medicine and Charité - Universitätsmedizin Berlin, corporate member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Berlin, Germany
- NeuroCure Clinical Research Center, Charité - Universitätsmedizin Berlin, corporate member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Berlin, Germany
- Department of Neurology, University of California San Francisco, San Francisco, California, USA
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Domínguez-Vicent A, Nilsson M, Brautaset R, Venkataraman AP. Agreement of different OCT scan directions for individual retinal-layer thickness measurements in multiple sclerosis subjects with prior unilateral optic neuritis. Sci Rep 2022; 12:566. [PMID: 35022479 PMCID: PMC8755755 DOI: 10.1038/s41598-021-04611-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2021] [Accepted: 12/28/2021] [Indexed: 11/30/2022] Open
Abstract
The similarities between horizontal and vertical Optical Coherence Tomography (OCT) scans for the individual retinal layer thickness measurements in the macula was evaluated. Two volumetric scans (B-scans oriented horizontally and vertically) were performed in 64 multiple sclerosis subjects with history of unilateral optic neuritis and 64 healthy controls. The agreement between the thickness measurements with horizontal and vertical OCT scans was evaluated in 3 groups of eyes: healthy controls, eyes with history of optic neuritis and the fellow eyes. The mean difference in individual layer thickness between the scans was smaller than the instrument’s axial resolution in all 3 groups. The limit of agreement (LoA) varied among the different layers and sectors analyzed and this trend was similar in all the groups. For the inner retinal layers (retinal nerve fiber layer to inner nuclear layer), the inner macular sectors had a larger LoA compared to the corresponding outer sectors. In the outer plexiform and nuclear layers, the central and inner sectors (except inner temporal) had LoA larger than the other sectors and layers. The larger LoA seen for different layers and sectors suggests that the scan direction must be same for the follow-up OCT measurements and in clinical studies.
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Affiliation(s)
- Alberto Domínguez-Vicent
- Division of Eye and Vision, Department of Clinical Neuroscience, Karolinska Institute, 171 77, Stockholm, Sweden.
| | - Maria Nilsson
- Division of Eye and Vision, Department of Clinical Neuroscience, Karolinska Institute, 171 77, Stockholm, Sweden
| | - Rune Brautaset
- Division of Eye and Vision, Department of Clinical Neuroscience, Karolinska Institute, 171 77, Stockholm, Sweden
| | - Abinaya Priya Venkataraman
- Division of Eye and Vision, Department of Clinical Neuroscience, Karolinska Institute, 171 77, Stockholm, Sweden
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Venkataraman AP, Andersson J, Fivelsdal L, Nilsson M, Domínguez-Vicent A. Impact of optical coherence tomography scan direction on the reliability of peripapillary retinal nerve fiber layer measurements. PLoS One 2021; 16:e0247670. [PMID: 33617580 PMCID: PMC7899366 DOI: 10.1371/journal.pone.0247670] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2020] [Accepted: 02/10/2021] [Indexed: 11/19/2022] Open
Abstract
Purpose To evaluate the intradevice repeatability and agreement for peripapillary retinal nerve fiber layer (pRNFL) measurements in healthy eyes with two different scan directions and two different number of B scans. Methods pRNFL was measured with a spectral domain optical coherence tomography on 54 healthy participants. Three-dimensional optic disc scans (6 mm x 6 mm) were performed on the right eye of the participants. Two repeated scans were performed in four different settings: H1: Horizontal scan with 512 A-scans x 96 B-scans; H2: Horizontal scan with 512 A-scans x 128 B-scans; V1: Vertical scan with 512 A-scans x 96 B-scans; V2: Vertical scan with 512 A-scans x 128 B-scans. The pRNFL thickness was evaluated in twelve clock-hour sector in a circle of 3.45 mm diameter centred at the optic disc. Repeatability and agreement were assessed with within subject standard deviation (Sw) and Bland-Altman test respectively. Results The repeatability of pRNFL measurements varied depending on the scan direction and sectors. The repeatability for the horizontal sectors were better with H1 and H2, with sector 9 having the best Sw (< 3 μm). The repeatability for the vertical sectors were better with V1 and V2 with sector 5 and 9 having the best Sw (< 4 μm). The repeatability with vertical scan was more symmetric among the sectors than with horizontal scans. The repeatability metrics of the sectors did not vary much between H1 and H2 (difference < 2 μm) and between V1 and V2 (difference < 3.2 μm). Comparing horizontal and vertical scans, the vertical sectors had larger limits of agreement of about 45 μm. Conclusion The reliability of the pRNFL thickness measurements is dependent on the direction of the scan and independent on the numbers of B-scans. Vertical scans for pRNFL gives more homogeneous repeatability across the different sectors.
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Affiliation(s)
- Abinaya Priya Venkataraman
- Division of Eye and Vision, Department of Clinical Neuroscience, Karolinska Institute, Stockholm, Sweden
- * E-mail:
| | - Josefine Andersson
- Division of Eye and Vision, Department of Clinical Neuroscience, Karolinska Institute, Stockholm, Sweden
| | - Lina Fivelsdal
- Division of Eye and Vision, Department of Clinical Neuroscience, Karolinska Institute, Stockholm, Sweden
| | - Maria Nilsson
- Division of Eye and Vision, Department of Clinical Neuroscience, Karolinska Institute, Stockholm, Sweden
| | - Alberto Domínguez-Vicent
- Division of Eye and Vision, Department of Clinical Neuroscience, Karolinska Institute, Stockholm, Sweden
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7
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Özbilen KT, Gündüz T, Çukurova Kartal SN, Gedik AC, Eraksoy M, Kürtüncü M. Bruch's membrane opening-minimum rim width: An alternative OCT biomarker study for multiple sclerosis. Eur J Ophthalmol 2021; 31:2141-2149. [PMID: 33601900 DOI: 10.1177/1120672121996638] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
PURPOSE Bruch's membrane opening-minimum rim width (BMO-MRW) and RNFL measured using anatomic positioning system (APS-RNFL) are novel OCT methods and remained unexplored in MS patients.To investigate the novel parameters of spectral-domain OCT as an alternative biomarker in patients with multiple sclerosis (MS). METHODS Retrospective cohort study; participants consisted of relapsing-remitting MS (RRMS) patients and healthy controls (HC). Eyes were classified according to the presence of MS and previous optic neuritis (ON). Measurements of standard peripapillary RNFL (S-RNFL), BMO-MRW, and APS-RNFL were performed. RESULT A total of 244 eyes of 122 participants (MS-patients: 63, HC: 59) were included in the study. Fifty-one eyes had a history of previous ON. In almost all measured parameters, neuroretinal rim thicknesses were observed the thinnest in eyes with ON history between all subgroups. S-RNFL and APS-RNFL techniques showed the difference in neuroretinal rim thickness in all three subjects (ON+, ON-, and HC). However, BMO-MRW, on the other hand, could not distinguish between ON(-) patients and HC. The relationship between OCT parameters and EDSS were observed only in eyes with an ON history in all three techniques. A meaningful model with 78% accuracy was obtained by using only the OCT parameters as risk factors. In the ROC analysis, no parameters were found to have acceptable high sensitivity and specificity. BMO-MRW was statistically weaker in every aspect than other RNFL techniques. CONCLUSION The novel APS-RNFL technique appears to be a bit more reliable alternative to S-RNFL technique to support therapeutic decision-making in MS. BMO-MRW has not been found as a successful alternative to S-RNFL.
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Affiliation(s)
- Kemal Turgay Özbilen
- Department of Ophthalmology, Istanbul Faculty of Medicine, Istanbul University, Istanbul, Turkey
| | - Tuncay Gündüz
- Department of Neurology, Istanbul Faculty of Medicine, Istanbul University, Istanbul, Turkey
| | | | - Ali Ceyhun Gedik
- Lüleburgaz State Hospital, Ophthalmology Clinic, Kırklareli, Turkey
| | - Mefküre Eraksoy
- Department of Neurology, Istanbul Faculty of Medicine, Istanbul University, Istanbul, Turkey
| | - Murat Kürtüncü
- Department of Neurology, Istanbul Faculty of Medicine, Istanbul University, Istanbul, Turkey
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8
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Murphy OC, Kalaitzidis G, Vasileiou E, Filippatou AG, Lambe J, Ehrhardt H, Pellegrini N, Sotirchos ES, Luciano NJ, Liu Y, Fitzgerald KC, Prince JL, Calabresi PA, Saidha S. Optical Coherence Tomography and Optical Coherence Tomography Angiography Findings After Optic Neuritis in Multiple Sclerosis. Front Neurol 2020; 11:618879. [PMID: 33384660 PMCID: PMC7769949 DOI: 10.3389/fneur.2020.618879] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2020] [Accepted: 11/24/2020] [Indexed: 12/15/2022] Open
Abstract
Background: In people with multiple sclerosis (MS), optic neuritis (ON) results in inner retinal layer thinning, and reduced density of the retinal microvasculature. Objective: To compare inter-eye differences (IEDs) in macular optical coherence tomography (OCT) and OCT angiography (OCTA) measures in MS patients with a history of unilateral ON (MS ON) vs. MS patients with no history of ON (MS non-ON), and to assess how these measures correlate with visual function outcomes after ON. Methods: In this cross-sectional study, people with MS underwent OCT and OCTA. Superficial vascular plexus (SVP) density of each eye was quantified using a deep neural network. IEDs were calculated with respect to the ON eye in MS ON patients, and with respect to the right eye in MS non-ON patients. Statistical analyses used mixed-effect regression models accounting for intra-subject correlations. Results: We included 43 MS ON patients (with 92 discrete OCT/OCTA visits) and 14 MS non-ON patients (with 24 OCT/OCTA visits). Across the cohorts, mean IED in SVP density was −2.69% (SD 3.23) in MS ON patients, as compared to 0.17% (SD 2.39) in MS non-ON patients (p = 0.002). When the MS ON patients were further stratified according to time from ON and compared to MS non-ON patients with multiple cross-sectional analyses, we identified that IED in SVP density was significantly increased in MS ON patients at 1–3 years (p = < 0.001) and >3 years post-ON (p < 0.001), but not at <3 months (p = 0.21) or 3–12 months post-ON (p = 0.07), while IED in ganglion cell + inner plexiform layer (GCIPL) thickness was significantly increased in MS ON patients at all time points post-ON (p ≦ 0.01 for all). IED in SVP density and IED in GCIPL thickness demonstrated significant relationships with IEDs in 100% contrast, 2.5% contrast, and 1.25% contrast letter acuity in MS ON patients (p < 0.001 for all). Conclusions: Our findings suggest that increased IED in SVP density can be detected after ON in MS using OCTA, and detectable changes in SVP density after ON may occur after changes in GCIPL thickness. IED in SVP density and IED in GCIPL thickness correlate well with visual function outcomes in MS ON patients.
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Affiliation(s)
- Olwen C Murphy
- Division of Neuroimmunology and Neurological Infections, Department of Neurology, Johns Hopkins Hospital, Baltimore, MD, United States
| | - Grigorios Kalaitzidis
- Division of Neuroimmunology and Neurological Infections, Department of Neurology, Johns Hopkins Hospital, Baltimore, MD, United States
| | - Eleni Vasileiou
- Division of Neuroimmunology and Neurological Infections, Department of Neurology, Johns Hopkins Hospital, Baltimore, MD, United States
| | - Angeliki G Filippatou
- Division of Neuroimmunology and Neurological Infections, Department of Neurology, Johns Hopkins Hospital, Baltimore, MD, United States
| | - Jeffrey Lambe
- Division of Neuroimmunology and Neurological Infections, Department of Neurology, Johns Hopkins Hospital, Baltimore, MD, United States
| | - Henrik Ehrhardt
- Division of Neuroimmunology and Neurological Infections, Department of Neurology, Johns Hopkins Hospital, Baltimore, MD, United States
| | - Nicole Pellegrini
- Division of Neuroimmunology and Neurological Infections, Department of Neurology, Johns Hopkins Hospital, Baltimore, MD, United States
| | - Elias S Sotirchos
- Division of Neuroimmunology and Neurological Infections, Department of Neurology, Johns Hopkins Hospital, Baltimore, MD, United States
| | - Nicholas J Luciano
- Division of Neuroimmunology and Neurological Infections, Department of Neurology, Johns Hopkins Hospital, Baltimore, MD, United States
| | - Yihao Liu
- Department of Electrical and Computer Engineering, Johns Hopkins University, Baltimore, MD, United States
| | - Kathryn C Fitzgerald
- Division of Neuroimmunology and Neurological Infections, Department of Neurology, Johns Hopkins Hospital, Baltimore, MD, United States
| | - Jerry L Prince
- Department of Electrical and Computer Engineering, Johns Hopkins University, Baltimore, MD, United States
| | - Peter A Calabresi
- Division of Neuroimmunology and Neurological Infections, Department of Neurology, Johns Hopkins Hospital, Baltimore, MD, United States
| | - Shiv Saidha
- Division of Neuroimmunology and Neurological Infections, Department of Neurology, Johns Hopkins Hospital, Baltimore, MD, United States
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9
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Nguyen J, Rothman A, Gonzalez N, Avornu A, Ogbuokiri E, Balcer LJ, Galetta SL, Frohman EM, Frohman T, Crainiceanu C, Calabresi PA, Saidha S. Macular Ganglion Cell and Inner Plexiform Layer Thickness Is More Strongly Associated With Visual Function in Multiple Sclerosis Than Bruch Membrane Opening-Minimum Rim Width or Peripapillary Retinal Nerve Fiber Layer Thicknesses. J Neuroophthalmol 2020; 39:444-450. [PMID: 30921169 DOI: 10.1097/wno.0000000000000768] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
BACKGROUND Optical coherence tomography (OCT) measurements of ganglion cell + inner plexiform layer (GCIPL) and peripapillary retinal nerve fiber layer (pRNFL) thicknesses are associated with visual function (VF) and disability in multiple sclerosis (MS). However, the value of measuring Bruch membrane opening-minimum rim width (BMO-MRW) thickness in MS remains unclear. METHODS Sixty-eight patients with MS and 22 healthy controls (HCs) underwent spectral domain OCT, 100%-contrast visual acuity (VA), 2.5%- and 1.25%-contrast letter acuity (LA), and Expanded Disability Status Scale (EDSS) testing. Mixed-effects linear regression models, accounting for within-subject, intereye correlations, were used to assess relationships. RESULTS The MS cohort exhibited significantly lower BMO-MRW (P = 0.01), pRNFL at 3.7-, 4.1-, and 4.7-mm diameters surrounding the optic disc (P < 0.001 for all), and GCIPL (P < 0.001) thicknesses than HCs. BMO-MRW thickness was associated with 100%-VA (P < 0.001, R = 0.08), 2.5%-LA (P < 0.001; R = 0.13), and 1.25%-LA (P = 0.002; R = 0.11). All measured pRNFL thicknesses were associated with high- and low-contrast VF (all: P < 0.001). GCIPL thickness was more strongly associated with 100%-VA (P < 0.001; R = 0.23), 2.5%-LA (P < 0.001; R = 0.27), and 1.25%-LA (P < 0.001; R = 0.21) than the other OCT measures assessed. All OCT measures were significantly, but weakly, associated with EDSS scores. CONCLUSIONS BMO-MRW and pRNFL thicknesses are reduced and associated with VF and disability in MS, but GCIPL thickness is a stronger marker of visual impairment. Our findings corroborate the utility of OCT in providing valuable information regarding the MS disease process.
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Affiliation(s)
- James Nguyen
- Department of Neurology (JN, AR, NG, AA, EO, PAC, and SS), Johns Hopkins University School of Medicine, Baltimore, Maryland; Departments of Neurology (LJB and SLG), Population Health (LJB and SLG), and Ophthalmology (LJB and SLG), New York University School of Medicine, New York, New York; Departments of Neurology (EMF and TF) and Ophthalmology (EMF and TF), Dell Medical School, University of Texas at Austin, Austin, Texas; and Department of Biostatistics (CC), Johns Hopkins University, Baltimore, Maryland
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10
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Murphy OC, Kwakyi O, Iftikhar M, Zafar S, Lambe J, Pellegrini N, Sotirchos ES, Gonzalez-Caldito N, Ogbuokiri E, Filippatou A, Risher H, Cowley N, Feldman S, Fioravante N, Frohman EM, Frohman TC, Balcer LJ, Prince JL, Channa R, Calabresi PA, Saidha S. Alterations in the retinal vasculature occur in multiple sclerosis and exhibit novel correlations with disability and visual function measures. Mult Scler 2020; 26:815-828. [PMID: 31094280 PMCID: PMC6858526 DOI: 10.1177/1352458519845116] [Citation(s) in RCA: 56] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Abstract
BACKGROUND The retinal vasculature may be altered in multiple sclerosis (MS), potentially acting as a biomarker of disease processes. OBJECTIVE To compare retinal vascular plexus densities in people with MS (PwMS) and healthy controls (HCs), and examine correlations with visual function and global disability. METHODS In this cross-sectional study, 111 PwMS (201 eyes) and 50 HCs (97 eyes) underwent optical coherence tomography angiography (OCTA). Macular superficial vascular plexus (SVP) and deep vascular plexus (DVP) densities were quantified, and poor quality images were excluded according to an artifact-rating protocol. RESULTS Mean SVP density was 24.1% (SD = 5.5) in MS eyes (26.0% (SD = 4.7) in non-optic neuritis (ON) eyes vs. 21.7% (SD = 5.5) in ON eyes, p < 0.001), as compared to 29.2% (SD = 3.3) in HC eyes (p < 0.001 for all MS eyes and multiple sclerosis optic neuritis (MSON) eyes vs. HC eyes, p = 0.03 for MS non-ON eyes vs. HC eyes). DVP density did not differ between groups. In PwMS, lower SVP density was associated with higher levels of disability (expanded disability status scale (EDSS): R2 = 0.26, p = 0.004; multiple sclerosis functional composite (MSFC): R2 = 0.27, p = 0.03) and lower letter acuity scores (100% contrast: R2 = 0.29; 2.5% contrast: R2 = 0.40; 1.25% contrast: R2 = 0.31; p < 0.001 for all). CONCLUSIONS Retinal SVP density measured by OCTA is reduced across MS eyes, and correlates with visual function, EDSS, and MSFC scores.
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Affiliation(s)
- Olwen C. Murphy
- Division of Neuroimmunology and Neurological Infections,
Department of Neurology, Johns Hopkins Hospital, Baltimore, MD, United States
| | - Ohemaa Kwakyi
- Division of Neuroimmunology and Neurological Infections,
Department of Neurology, Johns Hopkins Hospital, Baltimore, MD, United States
| | - Mustafa Iftikhar
- Wilmer Eye Institute, Johns Hopkins University School of
Medicine, Baltimore, MD, United States
| | - Sidra Zafar
- Wilmer Eye Institute, Johns Hopkins University School of
Medicine, Baltimore, MD, United States
| | - Jeffrey Lambe
- Division of Neuroimmunology and Neurological Infections,
Department of Neurology, Johns Hopkins Hospital, Baltimore, MD, United States
| | - Nicole Pellegrini
- Division of Neuroimmunology and Neurological Infections,
Department of Neurology, Johns Hopkins Hospital, Baltimore, MD, United States
| | - Elias S. Sotirchos
- Division of Neuroimmunology and Neurological Infections,
Department of Neurology, Johns Hopkins Hospital, Baltimore, MD, United States
| | - Natalia Gonzalez-Caldito
- Division of Neuroimmunology and Neurological Infections,
Department of Neurology, Johns Hopkins Hospital, Baltimore, MD, United States
| | - Esther Ogbuokiri
- Division of Neuroimmunology and Neurological Infections,
Department of Neurology, Johns Hopkins Hospital, Baltimore, MD, United States
| | - Angeliki Filippatou
- Division of Neuroimmunology and Neurological Infections,
Department of Neurology, Johns Hopkins Hospital, Baltimore, MD, United States
| | - Hunter Risher
- Division of Neuroimmunology and Neurological Infections,
Department of Neurology, Johns Hopkins Hospital, Baltimore, MD, United States
| | - Norah Cowley
- Division of Neuroimmunology and Neurological Infections,
Department of Neurology, Johns Hopkins Hospital, Baltimore, MD, United States
| | - Sydney Feldman
- Division of Neuroimmunology and Neurological Infections,
Department of Neurology, Johns Hopkins Hospital, Baltimore, MD, United States
| | - Nicholas Fioravante
- Division of Neuroimmunology and Neurological Infections,
Department of Neurology, Johns Hopkins Hospital, Baltimore, MD, United States
| | - Elliot M. Frohman
- Department of Neurology and Ophthalmology, University of
Texas Austin Dell Medical School, Austin, TX, United States
| | - Teresa C. Frohman
- Department of Neurology and Ophthalmology, University of
Texas Austin Dell Medical School, Austin, TX, United States
| | - Laura J. Balcer
- Department of Neurology, New York University Langone
Medical Center, New York, NY, United States
| | - Jerry L. Prince
- Department of Electrical and Computer Engineering, Johns
Hopkins University, Baltimore, MD, United States
| | - Roomasa Channa
- Wilmer Eye Institute, Johns Hopkins University School of
Medicine, Baltimore, MD, United States
- Department of Ophthalmology, Baylor College of Medicine,
Houston, TX, United States
| | - Peter A. Calabresi
- Division of Neuroimmunology and Neurological Infections,
Department of Neurology, Johns Hopkins Hospital, Baltimore, MD, United States
| | - Shiv Saidha
- Division of Neuroimmunology and Neurological Infections,
Department of Neurology, Johns Hopkins Hospital, Baltimore, MD, United States
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11
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Domínguez-Vicent A, Brautaset R, Venkataraman AP. Repeatability of quantitative measurements of retinal layers with SD-OCT and agreement between vertical and horizontal scan protocols in healthy eyes. PLoS One 2019; 14:e0221466. [PMID: 31437222 PMCID: PMC6705867 DOI: 10.1371/journal.pone.0221466] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2019] [Accepted: 08/07/2019] [Indexed: 01/06/2023] Open
Abstract
Purpose To evaluate the repeatability of the new spectral domain optical coherence tomography (HOCT-1F), and also to evaluate the agreement between vertical and horizontal scan protocols. In addition, we also evaluated the relation between the repeatability and age. Methods Three consecutive measurements of the inner limiting membrane–retinal pigment epithelium (ILM-RPE), inner limiting membrane–inner plexiform layer (ILM-IPL) from macular horizontal and vertical scans, and inner limiting membrane–retinal nerve fiber layer (ILM-RNFL) from optic disc horizontal scan. 159 subjects were included in the analysis. The within subject standard deviation (Sw) and the repeatability limits (Rlimit) are used to represent the repeatability of the parameters for the different sectors. Results The Sw for the ILM-RPE thickness was less than 3.5 μm for each sector and scan direction. The Sw values varied within the sectors and scan modes, with horizontal scan modes resulting in better values for the horizontal sectors, and vice versa. The Sw for the GCL-IPL thickness was less than 2 μm, and was similar between the vertical and horizontal scan modes for each sector map. For the optic disc scan, the Sw was not symmetric along the clock-hour map sectors, the largest Sw values were seen in the vertical sectors (8.6 μm). The mean difference between the vertical and horizontal scans was less than 2 μm for each retinal thickness sector map. Significant but weak correlation between the Sw and the subject’s age was seen in both macular and optic disc scans. Conclusions The repeatability of the HOCT-1F to measure the ILM-RPE-, ILM-IPL- and ILM-RNFL-thickness is good. The repeatability of the ILM-RPE thickness is dependent on the scan direction, which should be taken into account when calculating retinal thickness. There is a weak correlation between the repeatability and the subject’s age.
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Affiliation(s)
- Alberto Domínguez-Vicent
- Unit of Optometry, Department of Clinical Neuroscience, Karolinska Institute, Stockholm, Sweden
- * E-mail:
| | - Rune Brautaset
- Unit of Optometry, Department of Clinical Neuroscience, Karolinska Institute, Stockholm, Sweden
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