Incidence of occludable angles in a high-risk Mongolian population

Abstract

Narrower angles as determined by limbal chamber depth grading and gonioscopy at baseline were the main risk factors identified for the development of occludable angles.

Comparisons of anterior segment biometry between Chinese and Caucasians using anterior segment optical coherence tomography

“…In Alaskan Eskimos, a group with high risk of PAC, there was no difference in biometric gonioscopy, ACD and axial length between men and women 4. In a prospective study evaluating the development of occludable angles in PAC suspects (defined as ACD<2.35 mm) in a Mongolian population, sex was not found to be a significant predictor 18. In a Burmese population-based study, sex was not associated with occludable angles in the multivariate analysis 17.…”

“…However, it is notable that some studies did not find an association between sex and biometric parameters expected to predispose to angle closure 4 17 18. In Alaskan Eskimos, a group with high risk of PAC, there was no difference in biometric gonioscopy, ACD and axial length between men and women 4.…”

Clear lens extraction in angle closure glaucoma

“…Twenty percent of normal individuals over the age of 50 years in Mongolia progressed to PACS over 5 years [39]. In one study, over a 5-year period, approximately 22% of PACS progressed to PAC; none progressed to PACG [40].…”

Ten-year incidence of primary angle closure in elderly Chinese: the Liwan Eye Study

“…Among Inuit individuals with a shallow anterior chamber, 16% developed PACG at a 10-year follow-up visit 5. A study of a Mongolian population aged 50 years and older found a PACS incidence of 20.4% among participants with a central anterior chamber depth (ACD) of <2.53 mm over a 6-year follow-up period 6. To date, there have been no population-based cohort studies of the incidence of PAC among Chinese people.…”