Open AccessValidation of electronic visual acuity (EVA) measurement against standardised ETDRS charts in patients with visual field loss from inherited retinal degenerations
Author(s) -
Jasleen K Jolly,
Kristin Juenemann,
Heather Boagey,
Marie Nadsady,
Holly Bridge,
Robert E. MacLaren
Publication year - 2019
Publication title -
british journal of ophthalmology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.016
H-Index - 153
eISSN - 1468-2079
pISSN - 0007-1161
DOI - 10.1136/bjophthalmol-2019-315124
Subject(s) - microperimetry , medicine , visual acuity , foveal , optometry , visual field , ophthalmology , artificial intelligence , retinal , computer science
With the increase in clinical trials testing therapy for retinal disease, there is a need to ensure that outcome measures are both accurate and standardised. The US Food and Drug Administration favours the use of visual acuity measured using ETDRS logMAR charts. The loss of visual field can interfere with visual tracking across the charts, leading to increased variability of measurements. Electronic visual acuity (EVA) presents the optotype on the centre of a screen, thereby removing the tracking element of the task, and may provide a more precise measurement.