Vision Improvement with Refractive Correction Does Not Completely Exclude Major Eye Diseases: Analyses of Visually Impaired South Korean Population in the Korea National Health and Nutrition Examination Survey 2009–2011

Table 2

Improvement of visual acuity after correction in participants with visually impaired eye(s).

Best-corrected visual acuity	N	%	Weighted %
<20/60 (group 1)	713	23.5	20.5
≥20/60 and <20/25 (group 2)	672	22.2	18.2
≥20/25 (group 3)	1646	54.3	59.9
Total	3031	100.0	100.0

The data are based on the eye with worse presenting visual acuity. N: number.