Table.

Number and percent of subjects having distance vision loss with usual and best achieved optical correction (N=1887).

Usual optical correction	Best achieved optical correction
	Normal bilateral	Unilateral visual loss	Moderate visual impairment	Low vision	Total
Normal bilateral	726 (38.5)	-	-	-	726 (38.5)
Unilateral visual loss	353 (18.7)	197(10.4)	-	-	550 (29.1)
Moderate visual impairment	187 (9.9)	116 (6.1)	167 (8.9)	-	470 (24.9)
Low vision	22 (1.2)	18 (1.0)	31 (1.6)	70 (3.7)	141 (7.5)
Total	1288 (68.3)	331 (17.5)	198 (10.5)	70 (3.7)	1887 (100)