Evaluation Of The Reading Speed Of Near Visual Acuity After Providing Low Vision Intervention
DOI:
https://doi.org/10.48165/ijabms.2021.233714Keywords:
near visual acuity, low vision intervention, interventionAbstract
BACKGROUND: The prevalence of low vision has been increased overtime. So many different types of low vision devices were developed within few years. From so many studies, it has been proved that low vision rehabilitation is the better option for low vision patients to improve their quality of life. Low vision rehabilitation will improve quality of life of patients by enhancing their residual vision for distance as well as for near activities. Reading speed for near activities is also an important part for development of reading ability, their confidence and their performance. So, in this study, reading speed will be measured with the help of MN Read chart (continuous text chart) and thereby evaluate improvement in reading speed after providing low vision devices for near. METHOD: This study is cross sectional in which 102 Patients were enrolled in the study visited at Shri C. H. Nagri Municipal Eye hospital (Tertiary eye care center). All patients were undergoing a standardized ophthalmological examination. Best corrected visual acuity for distance and near has been assessed. Starting point of magnification required for low vision patients has been calculated and was finalized according to their visual ability, needs and demands, occupation and affordability. Then, according to needs of Low Vision Patients, Low Vision Intervention has been given with proper training and finally Reading Speed being measured with final recommended Low Vision Aid. After provision of low vision aids, reading speed is evaluated using standardized MN Read text chart. Reading speed has been measured according to Word per Minute formula. RESULTS: 102 low vision patients were enrolled in the study, who visited tertiary eye care center, among which 53.92% were male population and 46.08% were female population. Mean Reading speed was 43.82±24.73 wpm after provision of low vision aids for the whole group. Three major causes were found more common; Chorio-Retinal Coloboma (22.54%), Retinal detachment (15.68%) and Retinitis Pigmentosa (13.72%). The management of all low Vision patients was found to be different for distance and near according to the patients Visual Acuity, needs and affordability. CONCLUSION:This indicates the great value of low vision rehabilitation through adequate providing of low vision aids for the improvement of reading ability. Low vision Intervention will help patient to maintain and regain their reading ability, which can lead to an increase in independency, mental ability, confidence and quality of life.
References
world health organization, global initiative for the elimination of avoidable blindness. WHO PBL 97.61 Geneva WHO ,1997?
World health organization 1997 http//www.who; int/blindness/causes/priority/en/index 5html.
A.k. Khurana comprehensive ophthalmology fourth edition.
World health organization 2006 Retrieved December 16 2006 http//en.Wikipedia.org/wiki/blindness. http//www.who.int/mediacentre/fact sheet/fs282/en
Essentials of Low vision Practice by Richard L. Brilliant
MNREAD acuity chart www.aaopt.org/mnread-reading-acuity-chart-normal-andlow-vision-normative-data
Importance of Reading speed: www.mindtools.com
Nhung Xuan Nguyen et al Improvement of reading speed after providing of low vision aids with age-related macular degeneration in 2009 https://www.ncbi.nlm.nih.gov/pubmed/19141148
Stephen G. Whittaker et al Visual Requirements for Reading journals.lww.com › Home › January 1993 - Volume 70 - Issue 1
G E Legge et al Psychophysics of Reading https://www.ncbi.nlm.nih.gov /pubmed
Michael D. Crossland et al Fixation stability and reading speed in patients with newly developed macular disease Ophthal. Physiol. Opt. 2004 24: 327–333 www.ncbi.nlm.nih.gov/pubmed/15228511
Giovanni Giacomelli et al Clinical and Microperimetric Predictors of Reading Speed in Low Vision Patients https://www.ncbi.nlm.nih.gov/pubmed/23722392
Susana T. L. Chung et al Improving reading speed for people with central vision loss through perceptual learning https://www.ncbi.nlm.nih.gov/pubmed/210887972
Elliott DB, Trukolo-Ilic M, Strong JG, Pace R, Plotkin A, Bevers P. Demographic characteristics of the vision-disabled elderly. Invest Ophthalmol Vis Sci. 1997; 38:2566–2575.
Crossland MD, Gould ES, Helman CG, Feely MP, Rubin GS. Expectations and perceived benefits of a hospital-based low vision clinic: results of an exploratory, qualitative research study. Vis Impairment Res. 2007; 9:59–66.
Rubin GS. Measuring reading performance [published online ahead of print March 16, 2013]. Vision Res. doi:10.1016/j. visres.2013.02.015.
Legge GE, Ross JA, Luebker A, La May JM. Psychophysics of reading, VIII: the Minnesota Low-Vision Reading Test. Optom Vis Sci. 1989;66:843–853.
Legge GE, Ross JA, Isenberg LM, LaMay JM. Psychophysics of reading: clinical predictors of low-vision reading speed. Invest Ophthalmol Vis Sci. 1992; 33:677–687.
Brown MM, Brown GC, Sharma S, Stein JD, Roth Z, Campanella J & Beauchamp GR (2006): The burden of age-related macular degeneration: a value-based analysis. Curr Opin Ophthalmol 17: 257–266.
Frohlich SJ & Lacker bauer CA (2006): Quality control in rehabilitation of patients with visual impairment: evaluation of use and benefits of optic and electronic devices. Ophthalmologe 103: 1038–1043.
Nguyen NX, Besch D, Bartz-Schmidt K, Gelisken F & Trauzettel Klosinski S (2007): Reading performance with low vision aids and vision-related quality of life after macular translocation surgery in patients with age-related macular degeneration. Acta Ophthalmol Scand 85: 877–882.
Downloads
Published
Issue
Section
License
Copyright (c) 2022 Helly Shah, Kinnari Kalaria, Dipali Satani, Tejas Desai
This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.