A High Prevalence of Occludable Angles in a Vietnamese Population

Purpose: To assess the prevalence of occludable angles in a Vietnamese population. , Methods: The authors retrospectively reviewed the angle status in 482 Vietnamese patients who presented to a general ophthalmology practice. All angles were graded by a glaucoma specialist according to the Shaffer method. Patients were excluded if they had known glaucoma or narrow angles, or a history of trauma or intraocular surgery. Results: A total of 29.5% of all patients surveyed and 47.8% of those 55 years of age or older had grade 0 to 2 angles. In the Framingham study, 3.8% of white patients 55 years of age or older had grade 0 to 2 angles.' Of the patients in our study population, 8.5% had grade 0 to 1 angles and were considered at high risk for occlusion. Conclusions: Vietnamese patients have a much higher prevalence of narrow angles and a greater risk of angle-closure glaucoma than white patients.