Comparison of Effect of Optical and Digital Devices on Reading Performance of Person with Visual Impairment

Abstract

OBJECTIVE: To determine   and compare effect of optical and digital devices on  reading performance of persons with visual impairment.

METHOD: The research protocol was approved by Ethical Review Board of College of Ophthalmology and Allied Vision Sciences, Lahore (Ref# COAVS/1480:23). This study was conducted in college of ophthalmology and allied vision sciences Lahore. Duration of study was from October to December 2023.sample size was calculated using a formula whose level of significance (α) is 5, power of test (1-β) is 80. The sample size was 27, and calculated by using the non-probability convenient sampling technique. Individuals with NVA worse tham 3M unit and above age ranges 15 years or above were included in this study.The individuals having any inflamatory disease were excluded from this study. The questionnaire consisted of several questions on reading performance with optical and digital devices, performa contained visual acuity improvement in both eyes with optical and digital devices. P-value was calculated by using Wilcoxon Signed Ranks test. P-value <0.05 was considered significant.

 RESULT: It indicates the probability of obtaining the observed results (or more extreme) if there is no actual difference between the near visual acuity with the Zoomer and the Magnifier. In this case, the p-value is 0.027. The difference of Near Visual Acuity with Optical and digital devices was not significant (p = 0.435).

CONCLUSION: There is no difference in Near Visual Acuity between the Zoomer and the Magnifier. Near Visual Acuity is lower with the Zoomer compared to the Magnifier.