Table 2. Causes of Visual Impairment (n = 400).

	Moderate Visual Impairment * n (%)	Blindness n (%)#	All Visual Impairment n (%)##
Refractive error	197 (73.2)	27 (20.6)	224 (56.0)
Cataract	50 (18.6)	82 (62.6)	132 (33.0)
Uncorrected Aphakia	12 (4.5)	8 (6.1)	20 (5.0)
Cataract surgical complications	3 (1.1)	6 (4.6)	9 (2.3)
Posterior segment disease	6 (2.2)	5 (3.8)	11 (2.8)
Others	1 (0.4)	3 (2.3)	4 (1.0)
	269 (100.0)	131 (100.0)	(100.0)

^* MVI is defined as presenting visual acuity worse than 6/18 to 6/60 in the better eye.

^# Blindness is defined as presenting visual acuity worse than 6/60 in the better eye.

^## Any visual impairment includes both the blindness and moderate visual impairment; p<0.05.