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. Author manuscript; available in PMC: 2010 Jun 1.
Published in final edited form as: J AAPOS. 2009 Apr 5;13(3):253–257. doi: 10.1016/j.jaapos.2009.01.007

FIG 2.

FIG 2

Difference between Lea Symbols and Early Treatment Diabetic Retinopathy Study (ETDRS) visual acuity plotted as a function of the mean of the visual acuity scores obtained with the Lea Symbols and ETDRS charts, with ETDRS visual acuity determined using line-by-line (A) and letter-by-letter (B) scoring. There was no significant correlation between the difference between Lea Symbols and ETDRS visual acuity scores and the mean of the scores. Dashed line represents perfect agreement between Lea Symbols and ETDRS visual acuity, solid lines represent regression line and 95% confidence interval.