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To describe the prevalence and risk factors for refractive errors in a northeastern Chinese population with type 2 diabetes. Subjects (age ≥30 years) from a community-based study, the Fushun Diabetic Retinopathy Cohort Study, were enrolled. All subjects underwent comprehensive ocular examinations, including autorefraction. Myopia, high myopia, and hyperopia were defined as a spherical equivalent (SE) of the right eye &lt;−0.5 diopter (D), &lt;−5.0D, and &gt;0.5D, respectively. Astigmatism was defined as cylinder &lt;−0.5D in a minus cylinder prescription. Anisometropia was defined as a difference of SE &gt;1.0D between two eyes. A total of 1929 participants (790 males, 41.0%) were enrolled. The age and gender standardized prevalence of myopia, high myopia, hyperopia, astigmatism, and anisometropia were 43.1% (95% confidence interval [CI]: 40.9%–45.3%), 8.5% (95% CI: 7.3%–9.8%), 21.5% (95% CI: 19.7%–23.4%), 61.0% (95% CI: 58.9%–63.2%), and 17.2% (95% CI: 15.5%–18.9%), respectively. Advancing age was associated with a higher frequency of hyperopia, astigmatism, and anisometropia, as opposed to a lower frequency of myopia. Female (adjusted odds ratio [aOR], 1.27; 95% CI, 1.02–1.57) participants, higher intraocular pressure (aOR, 1.03; 95% CI, 1.00–1.07), and lenticular opacity (aOR, 1.53; 95% CI, 1.20–1.94) were also found to be associated with myopia. Long duration of diabetes (&gt;15 years) was found to be a significant factor for astigmatism (aOR, 1.62; 95% CI, 1.15–2.27) and anisometropia (aOR, 1.87; 95% CI, 1.29–2.71). Nearly two-thirds of participants with type 2 diabetes had a refractive error. Age is a common factor with different types of refractive errors.

Refractive Error in a Chinese Population with Type 2 Diabetes: A Report from the Fushun Diabetic Retinopathy Cohort Study