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The aim of this study is to assess the prevalence and associated risk factors of lens opacities among type 2 diabetics in Kinmen, Taiwan. A community-based mass screening ascertained 971 type 2 diabetics from 1991 to 1993. From that population, a total of 578 (59.5%) patients with type 2 diabetes underwent eye screening in 1999 with a 45° thin slit-lamp biomicroscopy and ophthalmoscopy to examine the lens after dilation of the pupils. The prevalence of nuclear, cortical, and posterior subcapsular (PSC) opacity without surgery among type 2 diabetics was 22.5, 20.2, and 19.9%, respectively. The number of females affected was statistically higher than males in each type of lens opacity. The prevalence of each type of lens opacity also showed a statistically significant increase with (χ2 test). Based on multiple logistic regressions, age was the most significant factor related with each type of lens opacity. Triglyceride at baseline was associated with nuclear opacity (≥200 vs. <200 mg/dl, OR = 2.35, 95% CI: 1.15–4.79) and PSC opacity (≥200 vs. <200 mg/dl, OR = 2.11, 95% CI: 1.00–4.43). In conclusion, our results show that in addition to age, higher triglyceride level may increase the risk of prevalent nuclear or PSC opacity in type 2 diabetics. [ABSTRACT FROM AUTHOR]