1
|
Matchinski TL, Crumbliss KE, Corgiat E, Pang Y. Near prescribing trends in two low vision rehabilitation clinics over a ten-year period. Clin Exp Optom 2024; 107:563-570. [PMID: 37726145 DOI: 10.1080/08164622.2023.2246490] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2022] [Accepted: 08/06/2023] [Indexed: 09/21/2023] Open
Abstract
CLINICAL RELEVANCE Optical magnification (OM), electronic magnification (EM), and assistive technology (AT) can be prescribed in low vision rehabilitation (LVR) clinics for near vision goals of patients. This study shows the prescription of OM has not decreased with increased availability of EM and AT. BACKGROUND Near visual goals are a primary concern for patients with visual impairment. LVR providers can prescribe OM, EM and/or AT to help. With the rapid evolution and availability of EM and AT, we aim to evaluate if there have been changes in the prescription patterns of clinicians with respect to OM over time. We hypothesise that the increased availability of technology may result in declining prescriptions of OM and increasing prescription of EM and AT over time. METHODS This retrospective study investigated near prescribing between 2008-2017 for 530 new patients to the LVR clinics. Examinations were performed by optometrists specialising in low vision. Near devices prescribed included OM and EM and AT. RESULTS Most patients attending the LVR clinics were female, over 60 years old and had age related macular degeneration. Near visual goals were a primary concern of 97.2% of the patients. OM was most prescribed in the 0-19 and >60-year-old age groups. Within the 20-39-year-old age group there was the greatest number of both EM and AT prescriptions. OM was most prescribed in patients with visual acuity better than 6/60. EM and AT showed a trend of increasing prescription as visual acuity decreased. EM prescription peaked in <6/60 to 6/240 category while AT trended upwards from <6/21 to no light perception and peaked in patients with no light perception. Referral rates for additional rehabilitation services were 75.7%. CONCLUSIONS This study shows that the prescription of OM is not declining even as the prescription and the breadth of electronic magnification and assistive technology available is expanding. OM continues to be a viable option for patients, especially in the youngest and oldest cohorts.
Collapse
Affiliation(s)
- Tracy L Matchinski
- Rosenbloom Center on Vision and Aging, Illinois College of Optometry, Chicago, IL, USA
| | - Kara E Crumbliss
- Forsythe Center for Comprehensive Vision Care, Chicago Lighthouse for People that are Blind or Visually Impaired, Chicago, IL, USA
| | - Elise Corgiat
- Forsythe Center for Comprehensive Vision Care, Chicago Lighthouse for People that are Blind or Visually Impaired, Chicago, IL, USA
| | - Yi Pang
- Rosenbloom Center on Vision and Aging, Illinois College of Optometry, Chicago, IL, USA
| |
Collapse
|
2
|
Dong Y, Wang A. Health Management Service Models for the Elderly with Visual Impairment: A Scoping Review. J Multidiscip Healthc 2024; 17:2239-2250. [PMID: 38751666 PMCID: PMC11095522 DOI: 10.2147/jmdh.s463894] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2024] [Accepted: 05/04/2024] [Indexed: 05/18/2024] Open
Abstract
Background The incidence of visual impairment(VI) in older people is gradually increasing. This review aimed to summarise the evidence on existing health management models and strategies for older adults with VI to improve health-related and vision-related quality of life (QoL) in older people. Methods Based on the framework of the scoping review methodology of Arksey and O'Malley (2005), a comprehensive literature search of relevant literature published between January 2010 and June 2022 in PubMed, CINAHL, EMBASE, Web of Science, Cochrane Library, CNKI, VIP, Wanfang database, Sinomed and the grey literature. Results Finally, 31 articles were included. The health management model had a multidisciplinary team low vision rehabilitation model, medical consortium two-way management model, low vision community comprehensive rehabilitation model, medical consortium-family contract service model, screening-referral-follow-up model, and three-level low vision care model. The health management strategy covers nine aspects, the combination of multi-element strategies is feasible, and network information technology has also shown positive results. Conclusion In the future, under the Internet and hierarchical management model, we should provide demand-based personalized support to rationalize and scientifically achieve hierarchical management and improve resource utilization efficiency and eye health outcomes.
Collapse
Affiliation(s)
- Yu Dong
- The First Hospital of China Medical University, Shenyang, People’s Republic of China
| | - Aiping Wang
- The First Hospital of China Medical University, Shenyang, People’s Republic of China
| |
Collapse
|
3
|
Bhaskaran S, Ravikumar P, Flora J, Vijayalakshmi P. Impact of special software training on quality of life among people with visual impairment. Indian J Ophthalmol 2023; 71:3313-3317. [PMID: 37787227 PMCID: PMC10683703 DOI: 10.4103/ijo.ijo_73_23] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2023] [Revised: 05/30/2023] [Accepted: 06/12/2023] [Indexed: 10/04/2023] Open
Abstract
Purpose To evaluate the impact of special software training in computer and smartphone apps as a form of rehabilitation to improve the quality of life of individuals with visual impairment (VI). Methods The study utilized a one-group pretest-posttest design. A total of 50 individuals aged 15 years and older with VI participated in the training, which included special software (NVDA) and mobile app training for 60 hours at the Visual Rehabilitation Center. The Low Vision Quality of Life Questionnaire was administered before the start of training and six months after completion. The questionnaire covered the following domains: (1) mobility, distance vision, and lighting; (2) reading and fine work; (3) social well-being; (4) economic impact; (5) attitude toward life; and (6) activities of daily living. Statistical software STATA 14.0 (Texas, USA) was used for data analysis. Paired t-tests and Wilcoxon signed-rank tests were conducted to compare the mean differences before and after training. Results Significant improvements were observed in five dimensions, namely mobility, distance vision and lighting, reading and fine work, and attitude toward life, at a highly significant level of 1% probability. The dimensions of social well-being and economic impact showed significant improvement at a 5% level of probability. Conclusion Visual impairment, whether congenital or acquired later in life, affects independence in all aspects of life. To the best of our knowledge, this is the first study to investigate the impact of special software training on the quality of life of visually impaired individuals. The authors suggest that this form of rehabilitation enhances accessibility to mainstream living, promotes independence, and ultimately improves quality of life. Participants experienced an improved quality of life through increased access to mainstream resources, enhanced ability to navigate and manage daily activities independently, and reduced reliance on multiple low vision aids or assistance from sighted individuals.
Collapse
Affiliation(s)
- Sahithya Bhaskaran
- Department of Paediatric Ophthalmology, Strabismus and Vision Rehabilitation Aravind Eye Hospital, Madurai, Tamil Nadu, India
| | - Pavitra Ravikumar
- Department of Paediatric Ophthalmology, Strabismus and Vision Rehabilitation Aravind Eye Hospital, Madurai, Tamil Nadu, India
| | - Jeyaseeli Flora
- Department of Paediatric Ophthalmology, Strabismus and Vision Rehabilitation Aravind Eye Hospital, Madurai, Tamil Nadu, India
| | - P Vijayalakshmi
- Department of Paediatric Ophthalmology, Strabismus and Vision Rehabilitation Aravind Eye Hospital, Madurai, Tamil Nadu, India
| |
Collapse
|
4
|
Ekemiri KK, Botchway EN, Ezinne NE, Sirju N, Persad T, Masemola HC, Chidarikire S, Ekemiri CC, Osuagwu UL. Comparative Analysis of Health- and Vision-Related Quality of Life Measures among Trinidadians with Low Vision and Normal Vision-A Cross-Sectional Matched Sample Study. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2023; 20:6436. [PMID: 37510668 PMCID: PMC10378830 DOI: 10.3390/ijerph20146436] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/09/2023] [Revised: 06/28/2023] [Accepted: 07/08/2023] [Indexed: 07/30/2023]
Abstract
This cross-sectional study investigated the health-related and vision-related quality of life measures of adults with low vision compared to healthy individuals in Trinidad and Tobago. The health-related quality of life (HRQOL-14) and the National Eye Institute Visual Functioning Questionnaire (NEI-VFQ-25) were administered to 20 participants with low vision caused by diabetic retinopathy, retinitis pigmentosa, glaucoma, and macular degeneration, as well as 20 participants with no visual problems (control). Participants were recruited from the University Eye Clinic in Trinidad and Tobago. Compared to the controls, more participants in the low-vision group had lower age-adjusted NEI-VFQ-25 scores (48.3% vs. 95.1%; p < 0.001), had poor general (47.5% vs. 10%, p = 0.004) and mental (100% vs. 10%, p < 0.042) health, experienced greater activity limitation due to impairment or health problems (85% vs. 20%, p < 0.001), needed help with personal care (27.5% vs. 0%, p < 0.009) and daily routine (67.5% vs. 0%, p < 0.001), and experienced sleep problems (97.5% vs. 65%, p < 0.001) and symptoms of anxiety (100% vs. 90%, p = 0.042). All the diabetic retinopathy participants (100%, p = 0.028) had two or more impairments or vision problems compared to none in the other low-vision participants. In summary, the HRQOL-14 and NEI-VFQ-25 scores were significantly reduced in low-vision participants, who also demonstrated a greater vulnerability to poor quality of life in the presence of diabetes retinopathy. These findings have important clinical implications regarding offering appropriate support and interventions to improve quality of life outcomes in individuals with low vision.
Collapse
Affiliation(s)
- Kingsley K Ekemiri
- Optometry Unit, Department of Clinical Surgical Sciences, Faculty of Medical Sciences, University of the West Indies, St Augustine Campus, St. Augustine 685509, Trinidad and Tobago
- Department of Optometry, College of Health Sciences, University of Kwazulu-Natal, Westville Campus, Durban 3629, South Africa
| | - Edith N Botchway
- Brain and Mind Group, Clinical Sciences, Murdoch Children's Research Institute, Parkville, VIC 3052, Australia
- Department of Pediatrics, University of Melbourne, Parkville, VIC 3010, Australia
| | - Ngozika E Ezinne
- Optometry Unit, Department of Clinical Surgical Sciences, Faculty of Medical Sciences, University of the West Indies, St Augustine Campus, St. Augustine 685509, Trinidad and Tobago
- Department of Optometry, College of Health Sciences, University of Kwazulu-Natal, Westville Campus, Durban 3629, South Africa
| | - Nikolai Sirju
- Optometry Unit, Department of Clinical Surgical Sciences, Faculty of Medical Sciences, University of the West Indies, St Augustine Campus, St. Augustine 685509, Trinidad and Tobago
| | - Tea Persad
- Optometry Unit, Department of Clinical Surgical Sciences, Faculty of Medical Sciences, University of the West Indies, St Augustine Campus, St. Augustine 685509, Trinidad and Tobago
| | - Hlabje Carel Masemola
- Department of Optometry, Faculty of Health Sciences, University of Free State, Bloemfontein 9301, South Africa
| | - Sherphard Chidarikire
- School of Nursing and Midwifery, College of Health, Medicine and Wellbeing, University of Newcastle, Callaghan, NSW 2308, Australia
| | - Chioma C Ekemiri
- Department of Health Promotion, The University of the West Indies, St. Augustine Campus, St. Augustine 685509, Trinidad and Tobago
| | - Uchechukwu Levi Osuagwu
- Department of Optometry, College of Health Sciences, University of Kwazulu-Natal, Westville Campus, Durban 3629, South Africa
- Bathurst Rural Clinical School, School of Medicine, Western Sydney University, Bathurst, NSW 2795, Australia
| |
Collapse
|
5
|
Gothwal VK, Sharma S. What are the reasons for abandonment of low vision devices prescribed in a large tertiary eye care centre? Ophthalmic Physiol Opt 2023; 43:17-24. [PMID: 36161721 DOI: 10.1111/opo.13055] [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: 07/23/2022] [Revised: 09/06/2022] [Accepted: 09/07/2022] [Indexed: 12/27/2022]
Abstract
PURPOSE To investigate abandonment rates of near-vision low vision devices (LVDs) and factors that influence abandonment among patients attending a tertiary low vision rehabilitation centre in South India. METHODS Two hundred and eighty-six adults with low vision completed the modified device abandonment survey 1 year following device prescription. The survey included six questions: possession of device, timing of last use, reasons for abandonment, tasks for which the device was used, payment type and change in quality of life (QoL) from device use. The primary outcome measure was abandonment. Multivariate logistic regression analysis was used to investigate factors for abandonment. RESULTS Three hundred and twelve near-vision devices were prescribed (mean, 1.09 device per patient.) Stand magnifiers (35%) followed by hand-held magnifiers (24%) were most frequently prescribed. Mean logMAR visual acuity (Snellen) in the better-seeing eye was 0.80 (6/38). Of the prescribed near-vision devices, 22% (95% CI, 17 to 27) were abandoned. Patients who abandoned the device were significantly older than those who did not (49.3 ± 17.2 vs. 43.5 ± 18.1 years; p = 0.03). In multivariable analysis, patients reporting no change in their QoL from device use had higher odds of abandoning the device (OR: 63.97; 95% CI, 23.77 to 172.12). Device-related (31%) and psychological (30%) factors were the most frequent reasons for abandonment. Among device-related issues, the most frequent reason was that patients felt the device was too complex to use (50%) followed by being too cumbersome to use (25%). CONCLUSION The abandonment rate for near-vision LVDs in South India was comparable with that reported in high-income countries. Patients reporting no change in their QoL had a higher likelihood of abandoning the device compared with those who reported some change. Device-related and psychological factors were the most frequent reasons for abandonment. These results can be used to develop strategies to improve compliance with use of devices.
Collapse
Affiliation(s)
- Vijaya K Gothwal
- Meera and L B Deshpande Centre for Sight Enhancement, Institute for Vision Rehabilitation, Hyderabad, India.,Brien Holden Eye Research Centre - Patient Reported Outcomes Unit, Hyderabad, India
| | - Sujata Sharma
- VST Centre for Glaucoma Care, L V Prasad Eye Institute, Hyderabad, India
| |
Collapse
|
6
|
Lacy GD, Abalem MF, Andrews CA, Abuzaitoun R, Popova LT, Santos EP, Yu G, Rakine HY, Baig N, Ehrlich JR, Fahim AT, Branham KH, Swenor BK, Lichter PR, Dagnelie G, Stelmack JA, Musch DC, Jayasundera KT. The Michigan Vision-Related Anxiety Questionnaire: A Psychosocial Outcomes Measure for Inherited Retinal Degenerations. Am J Ophthalmol 2021; 225:137-146. [PMID: 33309692 DOI: 10.1016/j.ajo.2020.12.001] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2020] [Revised: 11/19/2020] [Accepted: 12/01/2020] [Indexed: 01/17/2023]
Abstract
OBJECTIVE We sought to construct and validate a patient-reported outcome measure for screening and monitoring vision-related anxiety in patients with inherited retinal degenerations. DESIGN Item-response theory and graded response modeling to quantitatively validate questionnaire items generated from qualitative interviews and patient feedback. METHODS Patients at the Kellogg Eye Center (University of Michigan, Ann Arbor, Michigan, USA) with a clinical diagnosis of an inherited retinal degeneration (n = 128) participated in an interviewer-administered questionnaire. The questionnaire consisted of 166 items, 26 of which pertained to concepts of "worry" and "anxiety." The subset of vision-related anxiety questions was analyzed by a graded response model using the Cai Metropolis-Hastings Robbins-Monro algorithm in the R software mirt package. Item reduction was performed based on item fit, item information, and item discriminability. To assess test-retest variability, 25 participants completed the questionnaire a second time 4 to 16 days later. RESULTS The final questionnaire consisted of 14 items divided into 2 unidimensional domains: rod function anxiety and cone function anxiety. The questionnaire exhibited convergent validity with the Patient Health Questionnaire for symptoms of depression and anxiety. This vision-related anxiety questionnaire has high marginal reliability (0.81 for rod-function anxiety, 0.83 for cone-function anxiety) and exhibits minimal test-retest variability (ρ = 0.81 [0.64-0.91] for rod-function anxiety and ρ = 0.83 [0.68-0.92] for cone-function anxiety). CONCLUSIONS The Michigan Vision-Related Anxiety Questionnaire is a psychometrically validated 14-item patient-reported outcome measure to be used as a psychosocial screening and monitoring tool for patients with inherited retinal degenerations. It can be used in therapeutic clinical trials for measuring the benefit of an investigational therapy on a patient's vision-related anxiety.
Collapse
|
7
|
Ehrlich JR, Flora HJ, Stagg BC, Vengadesh B, Willey G, Vardhan A. Functional Difficulties of Patients Seeking Low Vision Services in South India. Asia Pac J Ophthalmol (Phila) 2020; 9:470-475. [PMID: 32371739 PMCID: PMC7541584 DOI: 10.1097/apo.0000000000000285] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022] Open
Abstract
PURPOSE The aim of the study was to determine the functional concerns of patients with different clinical and demographic characteristics seeking low vision care in South India. DESIGN Cross-sectional clinic-based survey. METHODS Consecutive new patients evaluated by the low vision service at Aravind Eye Care System (AECS), Madurai, India, India from September 2016 to March 2017 were recruited. Clinical and sociodemographic data were collected and participants underwent a semistructured survey to determine vision-related functional concerns. Analyses were conducted to determine associations with functional concerns. This study was approved by the AECS Institutional Review Board and all participants provided informed consent. RESULTS The study included 419 participants (mean age 42.0 years, 65.2% male). Retinal dystrophy (35.8%) and acquired retinal disease (22.0%) were the most common diagnoses. The most frequently cited functional concerns were reading (37.7%), mobility (19.9%), and facial identification (13.8%). The number of functional concerns did not vary by diagnosis, age, sex, education, occupation, or presenting visual acuity (P > 0.05). Participants with retinal dystrophy were more likely to cite problems with night vision (P < .001). Age was significantly associated with greater difficulty recognizing faces [odds ratio (OR) = 1.20, 95% confidence interval (CI) = 1.01-1.43] and less night vision difficulty (OR = 0.75, 95% CI = 0.60-1.00). Worse presenting visual acuity was significantly associated with reporting a mobility problem (OR = 2.87, 95% CI = 2.09-3.93). CONCLUSIONS This study supports the expansion of low vision services in India targeted to common functional concerns including reading, mobility, and facial identification. However, results do not support the use of ocular diagnosis for this purpose.
Collapse
Affiliation(s)
- Joshua R. Ehrlich
- Department of Ophthalmology and Visual Sciences, University of Michigan, Ann Arbor, MI, USA
- Institute for Healthcare Policy and Innovation, University of Michigan, Ann Arbor, MI, USA
| | | | | | - B. Vengadesh
- Aravind Eye Care System, Madurai, Tamil Nadu, India
| | | | - Ashok Vardhan
- Aravind Eye Care System, Tirupati, Andhra Pradesh, India
| |
Collapse
|
8
|
Wallace S, Alao R, Kuper H, Jackson ML. Multidisciplinary visual rehabilitation in low- and middle-income countries: a systematic review. Disabil Rehabil 2020; 44:1164-1175. [PMID: 32726142 DOI: 10.1080/09638288.2020.1794063] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Abstract
OBJECTIVE To systematically review the evidence for effectiveness of rehabilitation interventions in people who are visually impaired, living in low- and middle-income countries. METHODS Fifteen databases and the grey literature were searched up until February 2020; papers were identified according to eligibility criteria, and assessed for risk of bias. Eligible studies were controlled trials (randomised or non-randomised) of rehabilitation interventions for blind or visually impaired adults or children from low- and middle-income countries. Possible outcomes included visual acuity, activities of daily living, safety, quality of life and psychological status. RESULTS Fifteen eligible studies were identified from India, Turkey, Nigeria, Croatia and Iran. Six studies were randomised, seven were non-randomised trials, and in two the method of allocation was not clear. Participants were adults, children and both adults and children. Seven studies were small (n ≤ 65) and examined the effect of training programmes. Remaining studies compared the effect of low vision aids, economic rehabilitation, goalball, rehabilitation compliance and service delivery methods, including one large four-arm randomised trial (n = 436). Studies measured a variety of outcomes, and mostly showed a positive effect of interventions for pre- and post-intervention assessment, although between intervention group comparisons were often inconclusive. Overall, only four studies had a low risk of bias. CONCLUSIONS A lack of high-quality evidence for rehabilitation interventions is a barrier to provision of low vision services in low- and middle-income countries. Future research should focus on establishing effectiveness and cost-effectiveness of devices and models of vision rehabilitation appropriate for low-resource settings.IMPLICATIONS FOR REHABILITATIONThe systematic review found a lack of high-quality evidence for rehabilitation interventions is a barrier to provision of low vision services in low- and middle-income countries.Consider how visual rehabilitation interventions which have been shown to be effective can be delivered by non-specialists.Ensure that service providers for people who are visually impaired are trained in recognising depression and anxiety and have pathways for referral to mental health services, as appropriate.
Collapse
Affiliation(s)
| | - Rotimi Alao
- MSc Programme, London School of Hygiene and Tropical Medicine, London, UK
| | - Hannah Kuper
- International Centre for Evidence in Disability, London School of Hygiene and Tropical Medicine, London, UK
| | - Mary Lou Jackson
- Department of Ophthalmology, University of British Columbia, Vancouver, Canada
| |
Collapse
|
9
|
The Needs for Visual Improvement of Patients Presented at Low-Vision Center in Wenzhou, China. J Ophthalmol 2019; 2019:3586370. [PMID: 31559091 PMCID: PMC6735188 DOI: 10.1155/2019/3586370] [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: 05/05/2019] [Revised: 07/16/2019] [Accepted: 08/10/2019] [Indexed: 11/18/2022] Open
Abstract
PURPOSE To characterize the needs for visual improvement of new-visit patients with low vision. METHODS This cross-sectional study collected detailed information of patients presented at low-vision center of the Eye Hospital of Wenzhou Medical University between January 2015 and January 2017. A questionnaire interview, including demographic information and needs for visual improvement, was conducted before ophthalmology examinations. RESULTS The main need for visual improvement was engagement in hobbies (68.9%), followed by reading (20.9%), engaging in occupation (20.1%), and watching TV or movies (17.1%). Less than 10% of patients mentioned the demand of using public transportation (5.8%), doing housework (3.7%), writing (1.9%), walking on irregular surfaces (1.5%), driving (1.1%), and others (2.4%). Women were significantly associated with a concern for performing hobbies (OR 1.45, 95% CI 1.0-2.0) but associated with lower odds of reading (OR 0.46, 95% CI 0.3-0.7). Older subjects were more willing to choose hobbies (OR 1.35 (per 10-year increase), 95% CI 1.3-1.4), reading (OR 1.11 (per 10-year increase), 95% CI 1.0-1.2), watching TV or movies (OR 1.4 (per 10-year increase), 95% CI 1.3-1.6), and housework (OR 1.21 (per 10-year increase), 95% CI 1.0-1.5) than younger individuals. In comparison with younger participants, older individuals were less likely to choose occupation (OR 0.53 (per 10-year increase), 95% CI 0.5-0.6). No significant association was found between visual acuity and needs for visual improvement. CONCLUSION Hobbies, reading, engaging in occupation, and watching TV were the most common needs for visual rehabilitation in patients with visual impairment. Gender and age showed a modest influence on the choice of different needs.
Collapse
|
10
|
Goldstein JE, Fenwick E, Finger RP, Gothwal V, Jackson ML, Lamoureux E, Rees G, Massof R. Calibrating the Impact of Vision Impairment (IVI): Creation of a Sample-Independent Visual Function Measure for Patient-Centered Outcomes Research. Transl Vis Sci Technol 2018; 7:38. [PMID: 30619658 PMCID: PMC6314226 DOI: 10.1167/tvst.7.6.38] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2018] [Accepted: 10/14/2018] [Indexed: 11/30/2022] Open
Abstract
PURPOSE Provide item calibrations estimated for the Impact of Vision Impairment (IVI) questionnaire by pooling data from several studies of people with vision impairment (VI) representing a variety of countries and causes of VI. METHODS Eight data sets from six principal investigators representing responses to IVI items from 2867 VI patients were pooled for analysis. Eligible patients were 18 years or older and from Australia, India, and the United States. Rasch analysis, using the Andrich Rating Scale Model (Winsteps version 3.65), was performed on preintervention IVI responses to estimate item and person measures, reliability coefficients, and response category thresholds. Differential item functioning (DIF) analysis and analysis of variance (ANOVA) were used to examine the effects different data sets and covariates on item estimates. RESULTS Patient age range was 18 to 103 years (median 62 years); 55% were male. Visual acuity ranged from 20/20 to no light perception and primary diagnosis was macular degeneration in 29% of patients. Item measure estimates showed good separation reliability (R 2 = 0.99). DIF magnitude did not preclude use of all IVI-28 data. ANOVA showed VA (P < 0.001) and gender (P < 0.002) were predictors of visual ability. CONCLUSIONS Analysis from pooled data support the provision of calibrated IVI item measures for researchers and clinicians to use, thus better enabling direct comparisons of patients with VI. TRANSLATIONAL RELEVANCE Validity testing of the IVI show that we can combine disparate data sets of patient responses to calibrate item measures and response category thresholds, and provide to others for use in comparing patients across clinical trials and on an individual basis.
Collapse
Affiliation(s)
| | - Eva Fenwick
- Population Health, Singapore Eye Research Institute, Singapore, Singapore
| | | | - Vijaya Gothwal
- Deshpande Centre for Sight Enhancement Brien Holden Eye Research Centre – Patient Reported Outcomes Unit, Hyderabad, India
| | - Mary Lou Jackson
- University of British Columbia Department of Ophthalmology and Visual Sciences, Vancouver, BC, Canada
| | - Ecosse Lamoureux
- Population Health, Singapore Eye Research Institute, Singapore, Singapore
| | - Gwyneth Rees
- University of Melbourne, Centre for Eye Research Australia, Royal Victorian Eye and Ear Hospital, East Melbourne, Australia
| | - Robert Massof
- Wilmer Eye Institute, Johns Hopkins University, Baltimore, MD, USA
| |
Collapse
|