Table 4 Age-adjusted and extrapolated results for the rapid assessment of avoidable blindness, Negros and Antique

VA with available correction	Negros			Antique
VA with available correction	Males (n = 221 670)	Females (n = 235 670)	Total (n = 457 340)	Males (n = 37 770)	Females (n = 44 560)	Total (n = 82 330)
Bilateral blindness
Number blind	3715	6230	9945	911	1152	2063
Prevalence (95% CI)	1.7% (0.9 to 2.5%)	2.6% (1.8 to 3.5%)	2.2% (1.6 to 2.8%)	2.4% (1.5 to 3.4%)	2.6% (1.8 to 3.4%)	2.5% (1.9 to 3.1%)
Bilateral severe visual impairment
Number	2893	2716	5609	445	417	862
Prevalence (95% CI)	1.3% (0.6 to 2.0%)	1.2% (0.6 to 1.7%)	1.2% (0.8 to 1.7%)	1.2% (0.5 to 1.9%)	0.9% (0.5 to 1.5%)	1.1% (0.7 to 1.5%)
Bilateral visual impairment
Number	19 015	23 820	42 835	2145	2929	5074
Prevalence (95% CI)	8.6% (6.6 to 10.6%)	10.1% (8.6 to 11.6%)	9.4% (8.0 to 10.8%)	5.7% (4.4 to 7.0%)	6.6% (5.5 to 7.7%)	6.2% (5.3 to 7.1%)