Table 3.

 Main cause of any visual impairment (including visual impairment, severe visual impairment, and blindness) and main causes of blindness

Cause	Any visual impairment (VI)		Blindness
	Number (prevalence, %)	Proportion of all cases of VI (%)	Number (prevalence, %)	Proportion of all cases of blindness (%)
Cataract	80 (17)	52	23 (5)	46
Non-trachomatous corneal opacity	26 (5)	17	14 (3)	28
Aphakia	20 (4)	13	3 (0.6)	6
Trachomatous corneal opacity	13 (3)	8	6 (1)	12
Glaucoma	9 (2)	6	3 (0.6)	6
Others	7 (2)	5	1 (0.2)	2
Total (all causes)	155 (32)	100	50 (10)	100