Smartphone app correlates well with standard visual screening assessment

Abstract

Zhao L, Stinnett SS, Prakalapakorn SG. Visual Acuity Assessment and Vision Screening Using a Novel Smartphone Application. J Pediatr. 2019;213:203-10.e1. Among children, what is the diagnostic accuracy of a smartphone visual-acuity application, compared with standard acuity assessment, in detecting decreased visual acuity? Prospective cohort with randomized first assignment to Peak Acuity or standard visual acuity assessment. Pediatric ophthalmology clinic at the Duke University Eye Center. 111 children 3-17 years of age. Peak Acuity visual acuity smartphone application assessment compared with standard visual acuity assessment, with random first assessment assignment. Peak Acuity diagnostic accuracy and intraclass correlation coefficient (ICC) between acuity measurement methods. Peek Acuity had a sensitivity of 83%-86% for decreased vision among all patients, 93%-100% among 3- to 5-year-olds. The ICC was 0.88 (95% CI, 0.83-0.92) for first and 0.85 (95% CI, 0.78-0.89) for second eyes examined; 0.45 (95% CI 0.13-0.68) for second eyes among 3- to 5-year-olds. Peak Acuity sensitivity for decreased vision was highest for 3- to 5-year-old children, though this group demonstrated examination fatigue. Peak Acuity demonstrated good correlation with standard assessment.