Purchase this article with an account.
Tung-Mei Kuang, Su-Ying Tsai, Catherine Jiu-Ling Liu, Yu-Chieh Ko, Shui-Mei Lee, Pesus Chou; Seven-Year Incidence of Age-Related Cataracts Among an Elderly Chinese Population in Shihpai, Taiwan: The Shihpai Eye Study. Invest. Ophthalmol. Vis. Sci. 2013;54(9):6409-6415. doi: 10.1167/iovs.13-12582.
Download citation file:
© ARVO (1962-2015); The Authors (2016-present)
To report the 7-year incidence of age-related cataracts in a metropolitan Chinese elderly population.
The Shihpai Eye Study 2006 included 460 (55.8%) of 1361 participants in the 1999 baseline survey for a follow-up eye examination. Cataract was graded by one ophthalmologist using the Lens Opacities Classification System III.
The 7-year incidence of pure nuclear opacity was 18.5% (95% confidence interval [CI]: 12.7%–24.3%)]; 34.7% (95% CI: 27.6%–41.8%) for cortical opacity; and 0.6% (95% CI: 0%–1.8%) for posterior subcapsular opacity. On the other hand, 11.6% (95% CI: 6.8%–16.4%) participants developed both nuclear and cortical opacity, 3.5% (95% CI: 0.8%–6.2%) nuclear and posterior subcapsular opacity; and 1.7% (95% CI: 0%–3.6%) cortical and posterior subcapsular opacity. A total of 3.5% (95% CI: 0.8%–6.2%) of participants developed all three types of cataract. Nuclear cataract was significantly associated with current smoking (P = 0.04; relative risk [RR]: 2.05; 95% CI: 1.05–3.99). Males were almost half as likely (P = 0.04; RR: 0.57; 95% CI: 0.34–0.97) to develop cortical opacity, whereas participants with a history of diabetes were approximately twice as likely to develop cortical opacity (P = 0.05; RR 2.43; 95% CI: 1.02–5.81). A higher level of education (P = 0.03; RR: 0.40; 95% CI: 0.18–0.91) and a higher body mass index (P = 0.02; RR: 0.28; 95% CI: 0.10–0.79) was protective of posterior subcapsular cataract.
This study indicated a high incidence of cortical opacities and lower incidence of nuclear opacities compared with Caucasians. Posterior subcapsular opacity incidence and cataract surgery rate were comparable.
This PDF is available to Subscribers Only