However, a marginally significant difference was found when stratified by age, where NFVA with habitual correction as measured by the SVC was better than that measured by the AS-28 in an elderly population (≥ 43 years old, median value of this population): 0.22 ± 0.20 logMAR with the AS-28, and 0.15 ± 0.14 logMAR with the SVC (P = 0.04).
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Validation of a novel iPhone application for evaluating near functional visual acuity.
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