Table 1

 Cataract surgical coverage (letters in parentheses refer to the notation used to define the CSC formulas given in the methods section)

Type of surgeryNeeding surgeryOperatedCSC
EyesPeopleEyesPeopleEyesPeople
Orthodox84 (b)23 (z)39 (a)29 (x+y)25.7%39.2%
Couching84 (b)23 (z)29 (c)22 (p+q)19.1%29.7%
Any84 (b)23 (z)68 (a+c)51 (x+y+p+q)44.7%68.9%