Table 3.
Age and sex specific prevalence % by type of cataract and for all unoperated and operated cataracts by study center
| North India |
South India |
|||||||
|---|---|---|---|---|---|---|---|---|
| 60-64 n=1029 | 65-69 n=696 | 70+ n=1074 | 60+ n=2799 | 60-64 n=1112 | 65-69 n=896 | 70+ n=1064 | 60+ n=3072 | |
| Any Nuclear⁎ | ||||||||
| Men | 33.3 | 45.0 | 59.8 | 47.9 | 26.2 | 32.4 | 43.2 | 34.7 |
| 95% CI | 28.0-38.5 | 39.5 -50.4 | 55.2-64.5 | 43.9-51.9 | 20.1-32.4 | 28.4-36.4 | 36.8-49.5 | 30.6-38.8 |
| Women | 41.1 | 51.8 | 54.6 | 48.2 | 35.9 | 42.4 | 45.7 | 40.8 |
| 95% CI | 37.2-45.0 | 45.8-57.7 | 50.0-59.3 | 45.1-51.3 | 31.3-40.4 | 37.1-47.8 | 40.1-51.4 | 38.3-43.3 |
| Any Cortical‡ | ||||||||
| Men | 4.3 | 7.5 | 8.3 | 6.9 | 5.3 | 11.2 | 10.5 | 9.1 |
| 95% CI | 2.0-6.5 | 4.1-11.1 | 5.7-10.9 | 5.3-8.5 | 3.2-7.3 | 7.9-14.5 | 8.2-12.8 | 7.2-10.9 |
| Women | 7.7 | 8.7 | 8.6 | 8.3 | 10.0 | 11.6 | 12.6 | 11.2 |
| 95% CI | 4.9-10.6 | 6.0-11.5 | 5.3-12.0 | 6.5-10.0 | 7.3-12.8 | 8.7-14.4 | 9.7-15.4 | 9.7-12.7 |
| Any PSC§ | ||||||||
| Men | 14.5 | 19.8 | 23.8 | 19.9 | 15.0 | 13.6 | 18.8 | 16.1 |
| 95% CI | 11.1-17.9 | 15.9-23.6 | 20.6-27.1 | 17.6-22.2 | 10.3-19.6 | 9.6-17.6 | 16.1-21.5 | 13.7-18.4 |
| Women | 17.8 | 24.0 | 26.2 | 22.1 | 13.5 | 20.0 | 23.7 | 18.5 |
| 95% CI | 14.7-20.8 | 19.3-28.7 | 22.1-30.2 | 20.1-24.0 | 10.0-17.0 | 16.6-23.3 | 19.3-23.1 | 16.3-20.6 |
| Any unoperated cataract∥ | ||||||||
| Men | 41.6 | 55.3 | 68.2 | 56.7 | 36.1 | 48.1 | 56.8 | 47.8 |
| 95% CI | 35.8–47.3 | 50.3–60.3 | 64.4–71.9 | 53.2-60.2 | 29.5-42.8 | 42.7-53.5 | 50.1-63.0 | 43.5-52.1 |
| Women | 48.7 | 65.7 | 66.9 | 58.9 | 50.9 | 56.3 | 66.4 | 57.2 |
| 95% CI | 44.5–52.9 | 60.1-71.3 | 63.1–70.7 | 56.2-61.7 | 46.5–55.3 | 51.3-61.3 | 61.2-71.6 | 54.2-60.1 |
| Any operated or unoperated cataract | ||||||||
| Men | 47.5 | 67.8 | 90.2 | 71.4 | 46.5 | 68.8 | 83.3 | 67.5 |
| 95% CI | 40.9–54.1 | 63.0-72.5 | 88.4–92.0 | 68.4-74.4 | 40.3–52.7 | 63.3-74.4 | 80.0-86.7 | 64.6-70.4 |
| Women | 56.7 | 85.8 | 94.9 | 76.5 | 62.8 | 75.4 | 91.3 | 75.1 |
| 95% CI | 52.8–60.7 | 81.1-90.0 | 93.31–96.5 | 73.7-79.4 | 57.8–67.7 | 71.7-79.1 | 88.8-93.8 | 72.8-77.5 |
CI= Confidence Interval
⁎
any nuclear cataract (pure or mixed) defined as Lens Opacity Classification System III (LOCS III)4
‡
any cortical cataract (pure or mixed) defined as LOCS III3
§
any PSC (posterior subcapsular cataract) (pure or mixed) defined as LOCS III2
∥
Any unoperated cataract defined as any nuclear cataract or cortical cataract or PSC cataract or with dense opacities