Validation of a web-based distance visual acuity test (original) (raw)

Journal of Cataract and Refractive Surgery

Abstract

Purpose: To validate the Democritus Digital Acuity and Reading Test (DDART) as a distance VA (dVA) test against a series of prevalent conventional distance vision charts. Setting: Ophthalmology Department, University Hospital of Alexandroupolis, Alexandroupolis, Greece; Ophthalmology Department, AHEPA University Hospital, Thessaloniki, Greece; and Ophthalmica Institute of Ophthalmology & Microsurgery, Thessaloniki, Greece. Design: Prospective multicenter validation study. Methods: The distance best spectacle-corrected visual acuity (dBSCVA) was compared in normal (NVG) and low (LVG) vision participants against 4 prevalent conventional distance vision charts (ETDRS, Snellen, Landolt C, and Tumbling E) by a predefined 2.5-symbol noninferiority margin and intraclass correlation coefficients (ICCs). DDART's test–retest (TRT) reliability was assessed with ICCs. Results: 534 participants (471 and 63 with normal and low vision, respectively) were included in the study. The mean differe...

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