Evaluation Of The Reading Speed Of Near Visual Acuity After Providing Low Vision Intervention

Abstract

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.