File:ETDRS Chart R.svg

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current23:32, 10 January 2021Thumbnail for version as of 23:32, 10 January 20212,250 × 2,137 (389 KB)commons>Fvasconcellos{{Information |Description=ETDRS Chart R, one of the three {{w|logMAR chart}} models designed by Ferris, Kassoff, Bresnick, and Bailey for use in the Early Treatment Diabetic Retinopathy Study (ETDRS). *Chart and optotype dimensions in millimeters precisely as specified by Ferris et al. (1982). *LogMAR and VAR values after Baliey & Lovie (2013). *Note: meters/feet not a direct conversion, but rather in Snellen equivalents (1 meter = 5 feet). |Source=Own work, after *{{cite journal|authors=Fer...

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