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Biswas V, Masihuzzaman M, Jha RK, Majumder R. Is there a relationship between somatic sensations, impaired vision, and cognitive performance using the factor structure of the convergence insufficiency symptoms survey questionnaire? Oman J Ophthalmol 2024; 17:32-36. [PMID: 38524337 PMCID: PMC10957034 DOI: 10.4103/ojo.ojo_67_22] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2022] [Revised: 12/22/2022] [Accepted: 01/02/2024] [Indexed: 03/26/2024] Open
Abstract
AIMS This study aims to evaluate the relationship between somatic sensations, impaired vision, and cognitive performance using the factor structure convergence insufficiency symptoms survey questionnaire in university undergraduate and post-graduate students. SETTINGS AND DESIGN Centre-based and questionnaire-based. SUBJECTS AND METHODS Subjects were recruited from a university. First, an e-Survey was conducted with the help of Google form and distributed through WhatsApp and Gmail to carry out the survey. The age group of participants was ranged from 18 to 30 years. A total number of 561 responses was received during the data collection period. As per the exclusion criteria, 230 responses were excluded from the study. Out of 331 students, 154 were male while 177 were female. Out of 331 participants, 213 were undergraduates and 118 were postgraduate's students. RESULTS A total of 331 participants took part in the study. The minimum age was 18 years and the maximum age was 30 years. The mean age of the participants was 23.40 ± 2.42. Among all students, 23.81% had somatic sensations followed by 10.49% had impaired vision, and 16.31% had a poor cognitive function. The correlation between somatic sensations-impaired visions was a moderate positive correlation and a strong positive correlation between somatic sensations-cognitive performance and impaired vision-cognitive performance. CONCLUSIONS A significant relationship between somatic sensations, impaired vision, and cognitive performance was found in the study. The students had more somatic sensations than impaired vision and cognitive performance.
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Affiliation(s)
- Vishal Biswas
- Department of Optometry, School of Allied Health Sciences, Noida International University, Greater Noida, Uttar Pradesh, India
| | - Mohammad Masihuzzaman
- Department of Optometry, School of Allied Health Sciences, Amity University, Gurgaon, Haryana, India
| | - Roshan Kumar Jha
- Department of Optometry, School of Allied Health Sciences, Amity University, Gurgaon, Haryana, India
| | - Roshni Majumder
- Department of Optometry, School of Allied Health Sciences, Noida International University, Greater Noida, Uttar Pradesh, India
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Majtánová N, Kolář P, Krišková P, Kéri P, Balazs T, Cholevík D, Kurilová V. Improvement of Visual Field Defects after Neuroembolization Treatment of Intracranial Aneurysms. Case Reports. Cesk Slov Oftalmol 2024; 80:42-51. [PMID: 38365581 DOI: 10.31348/2024/8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/18/2024]
Abstract
PURPOSE Intracranial aneurysms and their hemorrhagic and thromboembolic complications represent a serious nosological unit that significantly endangers those afflicted. They are mostly asymptomatic until rupture occurs. In two case reports, we present our observations of young patients with impaired vision and headaches, in whom we found the presence of intracranial aneurysms. OBSERVATIONS Presentation of two case reports of patients who came to our department with impaired vision and headaches. The patients underwent a complete eye examination at our center, including a visual field examination. Based on the results of the examination, they were referred for an imaging examination of the brain, which revealed the presence of intracranial aneurysms. The patients were subsequently sent to the interventional neuroradiology center, where they underwent a noninvasive endovascular neuroembolization procedure with flow diverter implantation. We continued to monitor the patients after the procedure and document the examination results up to 1 year after the procedure. CONCLUSIONS AND SIGNIFICANCE Thanks to the fast detection, diagnosis, and management of both patients, we prevented the occurrence of aneurysm rupture, thus a life-threatening complication. After endovascular procedures with flow diverter implantation, we observed a significant improvement in visual acuity as well as perimetric findings in both patients. When intracranial aneurysms are found within a week of the onset of eye symptoms and treated within three months, defects in the visual fields improved in our two patients within 6-12 months, and in one of the two patients the defects almost completely disappeared.
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Good GA, Nazari Orakani S, Officer TN, Roguski M, McBride-Henry K. Access to Health and Disability Services for New Zealanders With Impaired Vision During the COVID-19 Pandemic 2020-2022. J Vis Impair Blind 2022; 116:830-836. [PMID: 36620331 PMCID: PMC9806190 DOI: 10.1177/0145482x221144324] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
Introduction: The COVID-19 pandemic has affected access to health and social services globally, leading to delays in accessing appropriate care. However, while there is a growing base of research into service access for the general population, there remains scarce information on the implications of the pandemic on disabled people. This article describes issues with health and disability support access for people with impaired vision in Aotearoa New Zealand (Aotearoa). Methods: Applying an Interpretive Description methodology, 62 interviews were conducted with disabled people; 10 of these individuals identified as having impaired vision. Findings were analyzed thematically for the entire group of 62, representing varied impairment groups, and then for the 10 who had impaired vision. Results: Five key themes arose from the interviews, including transportation difficulties, mental distress, loss of community, loss of physical contact and signals, and general loss of support. Participants identified that this loss of support occurred at multiple levels, meaning that the disability and healthcare system as a whole was ill-equipped to manage their needs. Participants reported a lag-time in accessing care, meaning that the effects of the pandemic are still felt due to a lack of available support and resources. Discussion: This article remains one of a few studies to look at the implications of the pandemic on access to health and disability services for those with impaired vision. It highlights that despite Aotearoa's good track record in managing the pandemic, groups were forgotten and marginalized by the collective response to managing COVID-19. Implications for Practitioners: Blindness professionals must be aware of the possible disadvantages and impacts of pandemics and other disasters on people with impaired vision and their access to health and disability services. Policymakers must include disabled people at the decision-making table so that the diverse needs of these populations are managed.
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Affiliation(s)
- Gretchen A. Good
- Gretchen Good, School of Health Sciences, Massey University, Palmerston North, New Zealand,Gretchen A. Good, PhD, COMS, CVRT, Senior Lecturer, School of Health Sciences, Massey University, Tennent Drive, Palmerston North 4410, New Zealand.
| | - Solmaz Nazari Orakani
- School of Nursing, Midwifery & Health Practice, Te Herenga Waka – Victoria University of Wellington, Wellington, New Zealand
| | - Tara N. Officer
- School of Nursing, Midwifery & Health Practice, Te Herenga Waka – Victoria University of Wellington, Wellington, New Zealand
| | | | - Karen McBride-Henry
- School of Nursing, Midwifery & Health Practice, Te Herenga Waka – Victoria University of Wellington, Wellington, New Zealand
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Grotz S, Schäfer J, Wunderlich KA, Ellederova Z, Auch H, Bähr A, Runa-Vochozkova P, Fadl J, Arnold V, Ardan T, Veith M, Santamaria G, Dhom G, Hitzl W, Kessler B, Eckardt C, Klein J, Brymova A, Linnert J, Kurome M, Zakharchenko V, Fischer A, Blutke A, Döring A, Suchankova S, Popelar J, Rodríguez-Bocanegra E, Dlugaiczyk J, Straka H, May-Simera H, Wang W, Laugwitz KL, Vandenberghe LH, Wolf E, Nagel-Wolfrum K, Peters T, Motlik J, Fischer MD, Wolfrum U, Klymiuk N. Early disruption of photoreceptor cell architecture and loss of vision in a humanized pig model of usher syndromes. EMBO Mol Med 2022; 14:e14817. [PMID: 35254721 PMCID: PMC8988205 DOI: 10.15252/emmm.202114817] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2021] [Revised: 02/04/2022] [Accepted: 02/09/2022] [Indexed: 01/17/2023] Open
Abstract
Usher syndrome (USH) is the most common form of monogenic deaf-blindness. Loss of vision is untreatable and there are no suitable animal models for testing therapeutic strategies of the ocular constituent of USH, so far. By introducing a human mutation into the harmonin-encoding USH1C gene in pigs, we generated the first translational animal model for USH type 1 with characteristic hearing defect, vestibular dysfunction, and visual impairment. Changes in photoreceptor architecture, quantitative motion analysis, and electroretinography were characteristics of the reduced retinal virtue in USH1C pigs. Fibroblasts from USH1C pigs or USH1C patients showed significantly elongated primary cilia, confirming USH as a true and general ciliopathy. Primary cells also proved their capacity for assessing the therapeutic potential of CRISPR/Cas-mediated gene repair or gene therapy in vitro. AAV-based delivery of harmonin into the eye of USH1C pigs indicated therapeutic efficacy in vivo.
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Affiliation(s)
- Sophia Grotz
- Chair of Molecular Animal Breeding and Biotechnology, LMU Munich, Munich, Germany.,Center for Innovative Medical Models, LMU Munich, Munich, Germany
| | - Jessica Schäfer
- Institute of Molecular Physiology, Molecular Cell Biology, Johannes Gutenberg University (JGU), Mainz, Germany
| | - Kirsten A Wunderlich
- Institute of Molecular Physiology, Molecular Cell Biology, Johannes Gutenberg University (JGU), Mainz, Germany
| | - Zdenka Ellederova
- Institute of Animal Physiology and Genetics, Czech Academy of Science, Libechov, Czech Republic
| | - Hannah Auch
- Chair of Molecular Animal Breeding and Biotechnology, LMU Munich, Munich, Germany.,Center for Innovative Medical Models, LMU Munich, Munich, Germany
| | - Andrea Bähr
- Center for Innovative Medical Models, LMU Munich, Munich, Germany.,Large Animal Models in Cardiovascular Research, Internal Medical Department I, TU Munich, Munich, Germany
| | - Petra Runa-Vochozkova
- Large Animal Models in Cardiovascular Research, Internal Medical Department I, TU Munich, Munich, Germany
| | - Janet Fadl
- Chair of Molecular Animal Breeding and Biotechnology, LMU Munich, Munich, Germany.,Institute of Molecular Physiology, Molecular Cell Biology, Johannes Gutenberg University (JGU), Mainz, Germany
| | - Vanessa Arnold
- Institute of Molecular Physiology, Molecular Cell Biology, Johannes Gutenberg University (JGU), Mainz, Germany
| | - Taras Ardan
- Institute of Animal Physiology and Genetics, Czech Academy of Science, Libechov, Czech Republic
| | - Miroslav Veith
- Ophthalmology Clinic, University Hospital Kralovske Vinohrady, Praha, Czech Republic
| | - Gianluca Santamaria
- Large Animal Models in Cardiovascular Research, Internal Medical Department I, TU Munich, Munich, Germany
| | - Georg Dhom
- Chair of Molecular Animal Breeding and Biotechnology, LMU Munich, Munich, Germany.,Center for Innovative Medical Models, LMU Munich, Munich, Germany
| | - Wolfgang Hitzl
- Biostatistics and Data Science, Paracelsus Medical University, Salzburg, Austria
| | - Barbara Kessler
- Chair of Molecular Animal Breeding and Biotechnology, LMU Munich, Munich, Germany.,Center for Innovative Medical Models, LMU Munich, Munich, Germany
| | - Christian Eckardt
- Center for Innovative Medical Models, LMU Munich, Munich, Germany.,Large Animal Models in Cardiovascular Research, Internal Medical Department I, TU Munich, Munich, Germany
| | - Joshua Klein
- Institute of Molecular Physiology, Molecular Cell Biology, Johannes Gutenberg University (JGU), Mainz, Germany
| | - Anna Brymova
- Institute of Animal Physiology and Genetics, Czech Academy of Science, Libechov, Czech Republic
| | - Joshua Linnert
- Institute of Molecular Physiology, Molecular Cell Biology, Johannes Gutenberg University (JGU), Mainz, Germany
| | - Mayuko Kurome
- Chair of Molecular Animal Breeding and Biotechnology, LMU Munich, Munich, Germany.,Center for Innovative Medical Models, LMU Munich, Munich, Germany
| | - Valeri Zakharchenko
- Chair of Molecular Animal Breeding and Biotechnology, LMU Munich, Munich, Germany.,Center for Innovative Medical Models, LMU Munich, Munich, Germany
| | - Andrea Fischer
- Veterinary Faculty, Small Animal Clinics, LMU Munich, Munich, Germany
| | - Andreas Blutke
- Institute of Experimental Genetics, Helmholtz Center Munich, Neuherberg, Germany
| | - Anna Döring
- Veterinary Faculty, Small Animal Clinics, LMU Munich, Munich, Germany
| | - Stepanka Suchankova
- Institute of Experimental Medicine, Czech Academy of Science, Prague, Czech Republic
| | - Jiri Popelar
- Institute of Experimental Medicine, Czech Academy of Science, Prague, Czech Republic
| | - Eduardo Rodríguez-Bocanegra
- Centre for Ophthalmology, University Eye Hospital, University Hospital Tübingen, Tübingen, Germany.,Institute for Ophthalmic Research, Centre for Ophthalmology, University Hospital Tübingen, Tübingen, Germany
| | - Julia Dlugaiczyk
- Department of Otorhinolaryngology, Head and Neck Surgery, University Hospital Zurich (USZ), University of Zurich, Zurich, Switzerland
| | - Hans Straka
- Faculty of Biology, LMU Munich, Planegg, Germany
| | - Helen May-Simera
- Institute of Molecular Physiology, Cilia Biology, JGU Mainz, Mainz, Germany
| | - Weiwei Wang
- Grousbeck Gene Therapy Center, Mass Eye and Ear and Harvard Medical School, Boston, MA, USA
| | - Karl-Ludwig Laugwitz
- Large Animal Models in Cardiovascular Research, Internal Medical Department I, TU Munich, Munich, Germany
| | - Luk H Vandenberghe
- Grousbeck Gene Therapy Center, Mass Eye and Ear and Harvard Medical School, Boston, MA, USA
| | - Eckhard Wolf
- Chair of Molecular Animal Breeding and Biotechnology, LMU Munich, Munich, Germany.,Center for Innovative Medical Models, LMU Munich, Munich, Germany
| | - Kerstin Nagel-Wolfrum
- Institute of Molecular Physiology, Molecular Cell Biology, Johannes Gutenberg University (JGU), Mainz, Germany.,Institute of Developmental Biology and Neurobiology, Johannes Gutenberg University (JGU), Mainz, Germany
| | - Tobias Peters
- Centre for Ophthalmology, University Eye Hospital, University Hospital Tübingen, Tübingen, Germany.,Institute for Ophthalmic Research, Centre for Ophthalmology, University Hospital Tübingen, Tübingen, Germany
| | - Jan Motlik
- Institute of Animal Physiology and Genetics, Czech Academy of Science, Libechov, Czech Republic
| | - M Dominik Fischer
- Oxford Eye Hospital, Oxford University NHS Foundation Trust, Oxford, UK.,Nuffield Laboratory of Ophthalmology, NDCN, University of Oxford, Oxford, UK
| | - Uwe Wolfrum
- Institute of Molecular Physiology, Molecular Cell Biology, Johannes Gutenberg University (JGU), Mainz, Germany
| | - Nikolai Klymiuk
- Center for Innovative Medical Models, LMU Munich, Munich, Germany.,Large Animal Models in Cardiovascular Research, Internal Medical Department I, TU Munich, Munich, Germany
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Purola PK, Nättinen JE, Parkkari MM, Ojamo MU, Koskinen SV, Rissanen HA, Sainio PR, Uusitalo HM. Improving health-related quality of life in glaucoma during 11 years and its association with vision loss and treatment of the disease. Acta Ophthalmol 2022; 100:e221-e232. [PMID: 33955668 DOI: 10.1111/aos.14883] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2020] [Revised: 03/18/2021] [Accepted: 04/04/2021] [Indexed: 11/30/2022]
Abstract
PURPOSE To evaluate the impact of glaucoma on health-related quality of life (HRQoL) and mental health in the ageing population of Finland. METHODS Altogether 7380 and 5774 Finnish individuals aged 30 years and older with known eye disease status were studied in 2000 and 2011, respectively, in two population-based surveys, including an 11-year follow-up of 4683 participants. Data on HRQoL (EQ-5D-3L, 15D), depression (BDI), psychological distress (GHQ-12) and eye disease diagnoses were obtained from self-reported assessments. Information on glaucoma was complemented with the medication, diagnosis and eye surgery data obtained from the Finnish Health Registries. Distance visual acuity was assessed using the Snellen eye chart test. In logistic regression analyses, data were corrected for age, gender and the most common comorbidities. RESULTS Glaucoma patients with verified diagnosis (n = 192 in 2000, n = 202 in 2011) and individuals with self-suspected glaucoma (n = 100 in 2000, n = 41 in 2011) showed a significant decrease in their HRQoL. Glaucoma was also associated with worsened overall mental health based on BDI and GHQ-12 results. Visual impairment associated with glaucoma is the major determinant of the reduced HRQoL and mental health. Neither glaucoma medication nor glaucoma surgery affected these parameters. The impact of glaucoma on HRQoL and mental health diminished between 2000 and 2011 in a cross-sectional setting. The newly diagnosed glaucoma during the 11-year follow-up had a minimal effect on them. CONCLUSION Glaucoma patients show reduced HRQoL and mental health, which is associated with vision loss regardless of the awareness or treatment of the disease. However, this effect seems to be diminishing over time, and the newly diagnosed glaucoma did not show a significant effect on either HRQoL or mental health.
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Affiliation(s)
- Petri K.M. Purola
- Department of Ophthalmology Faculty of Medicine and Health Technology Tampere University Tampere Finland
- Finnish Register of Visual Impairment Finnish Federation of the Visually Impaired Helsinki Finland
| | - Janika E. Nättinen
- Department of Ophthalmology Faculty of Medicine and Health Technology Tampere University Tampere Finland
| | - Minna M. Parkkari
- Department of Ophthalmology Faculty of Medicine and Health Technology Tampere University Tampere Finland
| | - Matti U.I. Ojamo
- Finnish Register of Visual Impairment Finnish Federation of the Visually Impaired Helsinki Finland
- Finnish Institute for Health and Welfare Helsinki Finland
| | | | | | | | - Hannu M.T. Uusitalo
- Department of Ophthalmology Faculty of Medicine and Health Technology Tampere University Tampere Finland
- Finnish Register of Visual Impairment Finnish Federation of the Visually Impaired Helsinki Finland
- Tays Eye Center Tampere University Hospital Tampere Finland
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Parreira RB, Lopes JBP, França MS, Albuquerque MB, Cordeiro LB, Cardoso DCDS, Cimolin V, Galli M, Oliveira CS. The Effects of Transcranial Direct Current Stimulation (tDCS) Combined With Proprioceptive Training for Blind Individuals: The Study Protocol for a Randomized Controlled Clinical Trial. Front Neurol 2020; 11:592376. [PMID: 33304312 PMCID: PMC7701133 DOI: 10.3389/fneur.2020.592376] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2020] [Accepted: 10/22/2020] [Indexed: 11/28/2022] Open
Abstract
To maintain the balance, the postural system needs to integrate the three main sensorial systems: visual, vestibular, and somatosensory to keep postural control within the limits of stabilization. Damage of one of these systems, in this case, the vision, will have a great disturbance on the postural control influencing the behavior of the balance, resulting in falls. The aim of this study protocol for a randomized, controlled clinical trial is to analyze the effects of transcranial direct current stimulation (tDCS) combined with proprioceptive exercises on postural control in individuals with congenital and acquired blindness. In this randomized, controlled, double-blind, clinical trial, male, and female individuals with blindness between 18 and 55 years of age will participate in this study divided into three phases: 1—Determine differences in postural control and gait between individuals with congenital and acquired blindness with and without the use of a guide stick when wearing shoes and when barefoot; 2—A pilot study to analyze the effects a bilateral cerebellar anodal tDCS on postural on postural control and gait; and 3—A treatment protocol will be conducted in which the participants will be allocated to four groups: G1—active tDCS + dynamic proprioceptive exercises; G2—sham tDCS + dynamic proprioceptive exercises; G3—active tDCS + static proprioceptive exercises; and G4—sham tDCS + static proprioceptive exercises. Evaluations will involve a camera system for three-dimensional gait analysis, a force plate, and electromyography. Dynamic stability will be determined using the Timed Up and Go test and static stability will be analyzed with the aid of the force plate. The viability of this study will allow the determination of differences in postural control between individuals with congenital and acquired blindness, the analysis of the effect of tDCS on postural control, and the establishment of a rehabilitation protocol.
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Affiliation(s)
- Rodolfo Borges Parreira
- Master's and Doctoral Program in Health Sciences, Faculty of Medical Sciences, Santa Casa de São Paulo, São Paulo, Brazil.,PostureLab, Paris, France
| | - Jamile Benite Palma Lopes
- Master's and Doctoral Program in Health Sciences, Faculty of Medical Sciences, Santa Casa de São Paulo, São Paulo, Brazil
| | | | | | | | | | - Veronica Cimolin
- Department of Electronics, Information and Bioengineering, Politecnico di Milano, Milan, Italy
| | - Manuela Galli
- Department of Electronics, Information and Bioengineering, Politecnico di Milano, Milan, Italy
| | - Claudia Santos Oliveira
- Master's and Doctoral Program in Health Sciences, Faculty of Medical Sciences, Santa Casa de São Paulo, São Paulo, Brazil.,Master's and Doctoral Program in Human Movement and Rehabilitation, University Center of Anápolis, Anápolis, Brazil
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Márquez-Olivera M, Juárez-Gracia AG, Hernández-Herrera V, Argüelles-Cruz AJ, López-Yáñez I. System for Face Recognition under Different Facial Expressions Using a New Associative Hybrid Model Amαβ-KNN for People with Visual Impairment or Prosopagnosia. Sensors (Basel) 2019; 19:E578. [PMID: 30704082 PMCID: PMC6386895 DOI: 10.3390/s19030578] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/16/2018] [Revised: 12/30/2018] [Accepted: 01/10/2019] [Indexed: 11/30/2022]
Abstract
Face recognition is a natural skill that a child performs from the first days of life; unfortunately, there are people with visual or neurological problems that prevent the individual from performing the process visually. This work describes a system that integrates Artificial Intelligence which learns the face of the people with whom the user interacts daily. During the study we propose a new hybrid model of Alpha-Beta Associative memories (Amαβ) with Correlation Matrix (CM) and K-Nearest Neighbors (KNN), where the Amαβ-CMKNN was trained with characteristic biometric vectors generated from images of faces from people who present different facial expressions such as happiness, surprise, anger and sadness. To test the performance of the hybrid model, two experiments that differ in the selection of parameters that characterize the face are conducted. The performance of the proposed model was tested in the databases CK+, CAS-PEAL-R1 and Face-MECS (own), which test the Amαβ-CMKNN with faces of subjects of both sexes, different races, facial expressions, poses and environmental conditions. The hybrid model was able to remember 100% of all the faces learned during their training, while in the test in which faces are presented that have variations with respect to those learned the results range from 95.05% in controlled environments and 86.48% in real environments using the proposed integrated system.
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Affiliation(s)
- Moisés Márquez-Olivera
- CICATA Unidad Legaria, Instituto Politécnico Nacional, Av. Legaria No. 694 Col. Irrigación, CDMX 11500 Mexico City, México.
| | - Antonio-Gustavo Juárez-Gracia
- CICATA Unidad Legaria, Instituto Politécnico Nacional, Av. Legaria No. 694 Col. Irrigación, CDMX 11500 Mexico City, México.
| | - Viridiana Hernández-Herrera
- CIITEC, Instituto Politécnico Nacional, Cerrada Cecati s/n Col. Sta. Catarina, Azc., CDMX 02250 Mexico City, México.
| | - Amadeo-José Argüelles-Cruz
- CIC, Instituto Politécnico Nacional, Av. Juan de Dios Bátiz, Esq. Miguel Othón de Mendizábal, Col. Nueva Industrial Vallejo, CDMX 07738 Mexico City, México.
| | - Itzamá López-Yáñez
- CIDETEC, Instituto Politécnico Nacional, Av. Juan de Dios Bátiz, Esq. Miguel Othón de Mendizábal, Col. Nueva Industrial Vallejo, CDMX 07700 Mexico City, México.
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Abstract
BACKGROUND We describe the ophthalmologic, clinical, and genetic findings in a patient of Yemenite-Jewish origin diagnosed with Alstrom syndrome due to a novel splice-site mutation 10 years after a clinical misdiagnosis of Leber congenital amaurosis. METHODS Ophthalmological evaluations included visual acuity, cycloplegic refraction, slit-lamp, and optical coherent tomography. Genetic analyses included whole exome sequencing followed by bioinformatics analysis and segregation analysis. An in vitro splicing assay was used to evaluate the effect of the identified mutation on splicing. Taqman assay was used to determine the need for population screening for the identified mutation. RESULTS Ophthalmologic findings at age 6 were impaired vision, nystagmus, and hyperopia. At age 16 years, the patient presented with obesity, hypothyroidism, and elevated transaminase levels in addition to reduced vision, wandering nystagmus, disc pallor, and degenerative retinal changes. Targeted genetic analysis of ALMS1 revealed a homozygous transversion, c.11544 + 3A>T, suggesting a novel splicing mutation, with elimination of the donor splice site and insertion of 73 nucleotides at the end of exon 16. These changes were validated by Sanger sequencing and co-segregation on family members. CONCLUSIONS Ophthalmologists should be alert to the differential diagnosis of inherited retinal degeneration in young patients who present with impaired vision, especially if systemic symptoms are mild and there is no known family history. In the present case, targeted genetic analysis of a child with a syndromic cone-rod dystrophy yielded a novel splicing mutation in ALMS1 causing Alstrom syndrome.
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Affiliation(s)
- Shirel Weiss
- a The Krieger Eye Research Laboratory , Felsenstein Medical Research Center , Petach Tikva , Israel.,b Sackler School of Medicine , Tel Aviv University , Tel Aviv , Israel
| | - Lior Cohen
- b Sackler School of Medicine , Tel Aviv University , Tel Aviv , Israel.,c Raphael Recanati Genetics Institute , Schneider Children's Medical Center of Israel , Petach Tikva , Israel
| | - Tamar Ben-Yosef
- d Rappaport Faculty of Medicine , Technion - Israel Institute of Technology , Haifa , Israel
| | - Miriam Ehrenberg
- e Pediatric Ophthalmology Unit , Schneider Children's Medical Center of Israel , Petach Tikva , Israel
| | - Nitza Goldenberg-Cohen
- a The Krieger Eye Research Laboratory , Felsenstein Medical Research Center , Petach Tikva , Israel.,d Rappaport Faculty of Medicine , Technion - Israel Institute of Technology , Haifa , Israel
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9
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Lin S, Cheng R, Wang K, Yang K. Visual Localizer: Outdoor Localization Based on ConvNet Descriptor and Global Optimization for Visually Impaired Pedestrians. Sensors (Basel) 2018; 18:E2476. [PMID: 30065208 DOI: 10.3390/s18082476] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/13/2018] [Revised: 07/25/2018] [Accepted: 07/26/2018] [Indexed: 11/17/2022]
Abstract
Localization systems play an important role in assisted navigation. Precise localization renders visually impaired people aware of ambient environments and prevents them from coming across potential hazards. The majority of visual localization algorithms, which are applied to autonomous vehicles, are not adaptable completely to the scenarios of assisted navigation. Those vehicle-based approaches are vulnerable to viewpoint, appearance and route changes (between database and query images) caused by wearable cameras of assistive devices. Facing these practical challenges, we propose Visual Localizer, which is composed of ConvNet descriptor and global optimization, to achieve robust visual localization for assisted navigation. The performance of five prevailing ConvNets are comprehensively compared, and GoogLeNet is found to feature the best performance on environmental invariance. By concatenating two compressed convolutional layers of GoogLeNet, we use only thousands of bytes to represent image efficiently. To further improve the robustness of image matching, we utilize the network flow model as a global optimization of image matching. The extensive experiments using images captured by visually impaired volunteers illustrate that the system performs well in the context of assisted navigation.
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Abstract
Charles Bonnet syndrome occurs in visually impaired but cognitively normal individuals. This report describes a condition of vivid visual hallucination (phantom images) in an 85-year-old conscious man, who had been blind by bilateral progressively worsening glaucoma. This common, but rarely reported, condition was managed by behavioral approach of repeated blinking, intermittent eyes closure, and reassurance. While emotional, mood and cognitive disorders need to be ruled out, the condition, though frightening to the afflicted, is benign and remediable with simple, inexpensive approach. Health workers managing people with terminal blindness should always ask for the presence of hallucinations from their patients to forestall a preventable distress resulting from wrong perception without visual stimulus.
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Affiliation(s)
- Baba Awoye Issa
- Department of Behavioural Sciences, University of Ilorin, PMB 1515, Ilorin, Nigeria
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