Table 3

Effective cataract surgical coverage (eCSC) and CSC persons, by age and gender, in Theni population (n=7127)

Age, years	Sample size	Sample size with complete data	No of persons (n)					eCSC*	CSC†	Quality gap (1−eCSC/CSC)
Age, years	Sample size	Sample size with complete data	a	b	c	d	e	eCSC*	CSC†	Quality gap (1−eCSC/CSC)
40–49	2602	2601	14	24	20	31	19	54.3	72.9	0.26
50–59	1999	1983	28	111	50	128	66	57.0	73.0	0.22
60–69	1584	1569	49	240	91	301	111	57.5	77.9	0.26
70–79	755	744	20	204	49	288	110	50.1	75.4	0.34
80 and over	187	184	10	64	18	85	35	53.6	74.6	0.28
Gender
Male	3004	2981	58	244	99	313	112	57.6	78.6	0.27
Female	4123	4094	63	399	129	520	229	52.6	73.9	0.29
Total	7127	7075	121	643	228	833	341	54.5	75.7	0.28

a: Individuals with unilateral operated cataract attaining PVA≥6/12 in the operated eye, who have BCVA<6/12 in the other eye.
b: Individuals with bilateral operated cataract attaining PVA≥6/12 in at least one eye.
c: Individuals with unilateral operated cataract (regardless of VA in the operated eye) and BCVA<6/12 in the other eye.
d: Individuals with bilateral operated cataract, regardless of VA in the operated eyes.
e: Individuals with BCVA<6/12 in both eyes with cataract as the main cause of vision impairment or blindness in one or both eyes.
*ECSC is defined as [(a+b)/(c+d+ e)]×100.
†CSC is defined as [(c+d)/(c+d+ e)]×100.
BCVA, best-corrected visual acuity; PVA, presenting visual acuity.