Table 1.
Cataract Surgical Coverage from Sample Data on Operable Cataract and Aphakia in 19 Districts in Karnataka (1995)
| Category | Condition | VA<3/60 | VA<6/60 | VA<6/18 | ||
|---|---|---|---|---|---|---|
| ∗b is defined as all eyes with cataract causing an acuity of less than 3/60, 6/60 or 6/18. | ||||||
| ∗∗a is defined as all eyes which are aphakic or (pseudo)aphakic, regardless of acuity. | ||||||
| z | No. persons with bilateral operable cataract | 1,157 | 2,143 | 4,345 | ||
| y | No. persons bilaterally (pseudo)aphakic | 558 | 558 | 558 | ||
| x | No. persons one eye aphakic + one eye operable cataract | 755 | 877 | 988 | ||
| b∗ | No. operable cataract eyes∗ | 4,481 | 6,844 | 11,511 | ||
| a∗∗ | No. (pseudo)aphakic eyes∗∗ | 2,401 | 2,401 | 2,401 | ||
| % | first eyes: | 76.8% | (a-y)/a | |||
| % | second eyes: | 23.2% | y/a | |||
| Cataract Surgical Coverage (eyes) | a/(a+b) | 34.9% | 26.0% | 17.3% | ||
| Cataract Surgical Coverage (persons) | (x+y)/(x+y+z) | 53.2% | 40.1% | 26.2% | ||