Abstract
This study compared the Arclight Cloth Chart (ARCchart) to the gold standard ETDRS chart for visual acuity (VA) measurement in 63 participants. Despite its potential limitations as a tool to measure subtle changes in VA over time, the ARCchart showed a limit of agreement between -0.23logMAR and 0.26logMAR with ETDRS values. It demonstrated 93% (95% Confidence Interval 86% to 100%) sensitivity and 90% (84% to 97%) specificity when used to screen for vision worse than 0.20logMAR. This low-cost, portable cloth VA chart is a valuable alternative for measuring VA and screening for low vision in resource poor settings.
Original language | English |
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Number of pages | 4 |
Journal | Scandinavian Journal of Optometry and Visual Science |
Volume | 16 |
Issue number | 2 |
Early online date | Dec 2023 |
DOIs | |
Publication status | E-pub ahead of print - Dec 2023 |
Keywords
- Visual acuity
- Low vision
- screening