A Comparative Study to Validate PEEK Acuity Smartphone Application for Home-based Vision Screening in India

Abstract Background: Vision screening via portable eye examination kit (PEEK) acuity app provides results comparable to the gold standard Snellen or early treatment of diabetic retinopathy study (ETDRS) charts when administered by professionals. However, data on the accuracy of vision assessments conducted by laypersons using PEEK acuity is limited. This study evaluates whether visual acuity measurements taken by a layperson using the PEEK acuity app align with those obtained through traditional Snellen chart screening by a trained refractionist mid-level ophthalmic personnel (MLOP). Methods: A total of 66 volunteers underwent vision screening of the right eye. Initially, their visual acuity was assessed using the PEEK acuity app by a layperson. This was followed by a second assessment using the Snellen acuity chart, conducted by an MLOP. Results: A paired t -test indicated no significant difference between the visual acuity measurements obtained by the two methods and the Pearson correlation coefficient is 0.718 with a P -value < 0.05 suggesting a moderate to strong positive correlation. Conclusion: The PEEK acuity app is an effective and cost-efficient tool for home-based vision screening, even when conducted by laypersons. By leveraging smartphone technology, PEEK acuity can facilitate vision screening in the comfort of individuals’ homes, reducing the need for on-site visits and enhancing accessibility, particularly for those in remote or underserved regions. This transition to home-based vision screening would improve early detection and intervention for visual impairments, enabling a more scalable, convenient, and user-friendly approach to public health vision initiatives.