Characterizing Functional Complaints in Patients Seeking Outpatient Low-Vision Services in the United States

Brown, Jamie; Goldstein, Judith E.; Chan, Tsung-Han; Massof, Robert W.; Ramulu, Pradeep Y.

doi:10.1016/j.ophtha.2014.02.030

Cited by 110 publications

(113 citation statements)

References 36 publications

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“…The increased assistance with ADL and IADL needed by persons with decreased visual acuity reported by Dahlin et al (2000) was consistent with our findings. Similar to the findings of Brown et al (2014), participants in this study, also commonly reported difficulty with functional mobility. Brunnstrom et al (2004) and Ratchford and Krause (2004) supported the importance of environment by showing increased participant independence with increased lighting, organization, and contrast.…”

Section: Discussionsupporting

confidence: 87%

“…The structure of the interview script, with a focus on occupational performance within the home and surrounding environment, did not encourage descriptions of the occupational categories not discussed by the participants. Common environmental factors that emerged as facilitators or barriers to occupational performance across all categories of vision impairment (2013) and Brown et al (2014), who showed that decreasing visual acuity increased the difficulty of ADL and IADL. The home activities these authors reported as difficult also discussed in our study included feeding, clothing management, cleaning, bill paying, cooking, phone use, and yard work.…”

Section: Discussionmentioning

confidence: 99%

“…There are multiple sources of evidence showing that low vision has adverse effects on the performance of daily occupations (Brown et al, 2014;Girdler, 2008;McGrath and Rudman, 2013). Smith et al (2009) reported that persons with low vision have methods of adapting to performance deficits including utilization of other senses and reliance on others.…”

Section: Introductionmentioning

confidence: 99%

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Understanding the occupational performance experiences of individuals with low vision

Blaylock

Barstow

Vogtle

et al. 2015

British Journal of Occupational Therapy

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Introduction: Occupational therapy practitioners who provide interventions for adults with low vision need to understand challenges with occupational performance from the individual's perspective in order to implement effective treatment. The purpose of this study was to understand self-described occupational behaviors of persons with low vision. Method: This qualitative study included semi-structured interviews regarding the occupational experiences of 22 individuals with varying levels of vision impairment. Transcribed data were organized according to the areas of occupation reported in the American Occupational Therapy Association's Practice Framework. Results: Participants described occupational performance of activities of daily living, instrumental activities of daily living, and leisure. Within each area of occupation, participants reported lighting, contrast, familiarity, and organization within the environment as facilitators or barriers to participation. Participants with increased vision loss relied heavily on assistive devices, task simplification, and others to perform desired occupations. Conclusion: The information obtained in this study can assist practitioners in selecting more effective interventions to increase the independence and safety of individuals with low vision.

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Section: Discussionsupporting

confidence: 87%

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Understanding the occupational performance experiences of individuals with low vision

Blaylock

Barstow

Vogtle

et al. 2015

British Journal of Occupational Therapy

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“…The data of Campbell and Robson (1968) and De Valois, Morgan, and Snodderly (1974) suggest that the relationship between light level and threshold tasks may not hold for performance on suprathreshold tasks, such as reading. Thus, it is important to determine under which conditions additional light should be recommended; specifically, the purpose of this study was to delineate the conditions under which increased light levels improve reading performance because reading goals are common in people seeking low-vision rehabilitation (Brown, Goldstein, Chan, Massof, & Ramulu, 2014;Owsley, 2011). Data showing the relationships among luminance, letter size, and reading speed will help vision rehabilitation practitioners predict the amount of increased lighting that could be expected to provide a benefit.…”

mentioning

confidence: 99%

Effects of Lighting on Reading Speed as a Function of Letter Size

Seiple

Overbury

Rosenthal

et al. 2018

The American Journal of Occupational Therapy

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OBJECTIVE. We sought to determine under what conditions brighter lighting improves reading performance.METHOD. Thirteen participants with typical sight and 9 participants with age-related macular degeneration (AMD) read sentences ranging from 0.0 to 1.3 logMAR under luminance levels ranging from 3.5 to 696 cd/m 2 .RESULTS. At the dimmest luminance level (3.5 cd/m 2 ), reading speeds were slowest at the smaller letter sizes and reached an asymptote for larger sizes. When luminance was increased to 30 cd/m 2 , reading speed increased only for the smaller letter sizes. Additional lighting did not increase reading speeds for any letter size. Similar size-related effects of luminance were observed in participants with AMD.CONCLUSION. In some instances, performance on acuity-limited tasks might be improved by brighter lighting. However, brighter lighting does not always improve reading; the magnitude of the effect depends on the text size and the relative changes in light level.

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“…1 Because reading is necessary for performing many daily tasks and achieving a number of common societal objectives (i.e., daily living, social interaction, recreation, and work), reading difficulty can cause substantial disability (defined as reduced ability compared to the norm to perform reading tasks that are important to an individual), and can be detrimental to quality of life (QOL). [2][3][4][5] Previous studies that have evaluated reading in subjects with visual impairment almost exclusively have attributed reading disability to visual acuity (VA) loss due to refractive error, cataract, or macular disease.…”

mentioning

confidence: 99%

Reading Ability and Reading Engagement in Older Adults With Glaucoma

Nguyen

Landingham

Massof

et al. 2014

Invest. Ophthalmol. Vis. Sci.

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Citation: Nguyen AM, van Landingham SW, Massof RW, Rubin GS, Ramulu PY. Reading ability and reading engagement in older adults with glaucoma. Invest Ophthalmol Vis Sci. 2014;55:5284-5290. DOI:10.1167/ iovs.14-14138 PURPOSE. We evaluated the impact of glaucoma-related vision loss on reading ability and reading engagement in 10 reading activities.METHODS. A total of 63 glaucoma patients and 59 glaucoma suspect controls self-rated their level of reading difficulty for 10 reading items, and responses were analyzed using Rasch analysis to determine reading ability. Reading engagement was assessed by asking subjects to report the number of days per week they engaged in each reading activity. Reading restriction was determined as a decrement in engagement.RESULTS. Glaucoma subjects more often described greater reading difficulty than controls for all tasks except puzzles (P < 0.05). The most difficult reading tasks involved puzzles, books, and finances, while the least difficult reading tasks involved notes, bills, and mail. In multivariable weighted least squares regression models of Rasch-estimated person measures of reading ability, less reading ability was found for glaucoma patients compared to controls (b ¼ À1.60 logits, P < 0.001). Among glaucoma patients, less reading ability was associated with more severe visual field (VF) loss (b ¼ À0.68 logits per 5-dB decrement in better-eye VF mean deviation [MD], P < 0.001) and contrast sensitivity (b ¼ À0.76 logits per 0.1-unit lower log CS, P < 0.001). Each 5-dB decrement in the better-eye VF MD was associated with book reading on 18% fewer days (P ¼ 0.003) and newspaper reading on 10% fewer days (P ¼ 0.008). No statistically significant reading restriction was observed for other reading activities (P > 0.05).CONCLUSIONS. Glaucoma patients have less reading ability and engage less in a variety of different reading activities, particularly those requiring sustained reading. Future work should evaluate the mechanisms underlying reading disability in glaucoma to determine how patients can maintain reading ability and engagement.

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Characterizing Functional Complaints in Patients Seeking Outpatient Low-Vision Services in the United States

Abstract: Reading was the most commonly reported difficulty, regardless of the patient's diagnosis. Neither visual acuity nor gender were predictive of reading concerns, although, age showed a small effect. Addressing reading rehabilitation should be a cornerstone of low-vision therapy.

Cited by 110 publications

References 36 publications

Understanding the occupational performance experiences of individuals with low vision

Understanding the occupational performance experiences of individuals with low vision

Effects of Lighting on Reading Speed as a Function of Letter Size

Reading Ability and Reading Engagement in Older Adults With Glaucoma

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