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. Author manuscript; available in PMC: 2013 Apr 1.
Published in final edited form as: Arch Ophthalmol. 2011 Dec 12;130(4):470–479. doi: 10.1001/archophthalmol.2011.377

Figure 4.

Figure 4

Bland-Altman Plot of Difference between Early Electronic Treatment Diabetic Retinopathy Study Visual Acuity Tests Measured Using Manual Refraction and Auto Refraction by Topcon 8000 Series Machines

Solid reference line indicates median; dashed lines indicate 5th and 95th percentiles

MR-EVA= Manual refraction Electronic Early Treatment Diabetic Retinopathy Study Visual Acuity Test letter score; AR-EVA= Autorefraction Electronic Early Treatment Diabetic Retinopathy Study Visual Acuity Test letter score.