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. Author manuscript; available in PMC: 2017 Nov 4.
Published in final edited form as: Mult Scler Relat Disord. 2016 Nov 4;10:198–203. doi: 10.1016/j.msard.2016.10.009

Figure 1.

Figure 1

Patient performance on low contrast visual testing is dependent on high contrast visual acuity.

Best LCVA (A) was defined as the lowest contrast chart that was readable by a given eye; n represents the number of eyes for which this was the best LCVA chart. Performance on low contrast vision testing correlated strongly with visual acuity (A, B). Many eyes were unable to read 2.5% or 5% LCVA charts (C). Patients were determined to have read a chart when they read at least 2 lines (A, C), 7 letters (for Sloan charts, C), or two triplets (for PR charts, C). LCVA: low contrast visual acuity.