Table 3.
Cataract Surgical Coverage from Sample Data on Operable Cataract and Aphakia in Ahmedabad District (1997)
| 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 | 26 | 69 | 206 | ||
| y | No. persons bilaterally (pseudo)aphakic | 292 | 292 | 292 | ||
| x | No. persons one eye aphakic + one eye operable cataract | 47 | 83 | 139 | ||
| b∗ | No. operable cataract eyes∗ | 158 | 310 | 689 | ||
| a∗∗ | No. (pseudo)aphakic eyes∗∗ | 776 | 776 | 776 | ||
| % | first eyes | 62.4% | (a-y)/a | |||
| % | second eyes: | 37.6% | y/a | |||
| Cataract Surgical Coverage (eyes) | a/(a+b) | 83.1% | 71.5% | 53.0% | ||
| Cataract Surgical Coverage (persons) | (x+y)/(x+y+z) | 92.9% | 84.5% | 76.7% | ||