Incidence of and risk factors for cataract among diabetes clinic attenders

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Abstract
The incidence of and risk factors for cataract during a mean (standard deviation (SD)) follow-up period of 5.0 (3.0) (range 0.1-12.4) years were examined among 3606 patients (2001 male and 1605 female) with diabetes mellitus from three outpatient clinics at the University Hospital, Nottingham. Among the 3606 patients free of cataract at initial registration who attended the clinic at least twice in the period 1979-1992, the mean (SD) age was 49.2 (17.8) years with a mean (SD) duration of diabetes of 7.6 (9.8) years at initial registration. The incidence of cataract was 10.4 (95% confidence interval (CI), 9.0, 11.9) per 1000 person-years based on 18089 person-years of follow-up. The incidence for females (13.6 (95% CI, 11.0, 16.1)) was greater than in males (8 (95% CI, 6.3, 9.7)) (P<0.001). The incidence of cataract in insulin-dependent diabetes mellitus (IDDM), non-insulin-treated and insulin-treated non-insulin-dependent diabetes mellitus (NID-DM) were 7.1 (95% CI, 5.4, 8.9), 11.7 (95% CI, 9.1, 14.3) ...