Comparison of the ETDRS logMAR, 'compact reduced logMar' and Snellen charts in routine clinical practice Lim LA et al. - The performance of the compact reduced logMAR chart was intermediate between Snellen and ETDRS. The theoretical advantages of the ETDRS design were still measurable in a clinical setting but the magnitude of the advantage in terms of test-retest reliability was fairly small and the time taken to complete the EDTRS was 1.86 times that of the Snellen chart. [more...]
