The Impact of Lens Vault on Visual Acuity and Refractive Error: Implications for Management of Primary Angle-closure Glaucoma.
Journal Article (Journal Article)
PURPOSE: To investigate the relationship between lens vault (LV), visual acuity (VA), and refraction. METHODS: This was a cross-sectional study of 2047 subjects aged 50 years and older recruited from a community polyclinic. Anterior segment optical coherence tomography was performed, and customized software was used to measure LV. VA was measured using a logarithm of minimum angle of resolution chart (logMAR chart; Lighthouse Inc.), and was classified as normal (logMAR<0.3), mild impairment (0.3<0.6), and moderate/severe impairment (logMAR>0.6). Refraction was measured with an autorefractor machine and spherical equivalent was defined as sphere plus half cylinder. Angle closure was defined as posterior trabecular meshwork not visible for ≥2 quadrants on nonindentation gonioscopy. RESULTS: Complete data were available for 1372 subjects including 295 (21.5%) with angle closure. Angle-closure subjects were significantly older (P<0.001), with shorter axial length (P<0.001), shallower anterior chamber depth (P<0.001), and greater LV (P<0.001). There was no significant difference in VA (P=0.12) compared with those without angle closure. After adjusting for age, sex, axial length, anterior chamber depth, and spherical equivalent, there was no significant association between LV and VA (P=0.35) or between LV and spherical equivalent (P=0.06). CONCLUSIONS: The magnitude of LV was not associated with VA or spherical equivalent. Lens extraction may be a consideration in eyes with angle closure with large LV in the absence of visually significant cataract.
Full Text
Duke Authors
Cited Authors
- Nongpiur, ME; Singhal, S; Stewart, S; Htoon, HM; Narayanaswamy, AK; Wong, TY; Perera, SA; Aung, T
Published Date
- March 2016
Published In
Volume / Issue
- 25 / 3
Start / End Page
- e236 - e240
PubMed ID
- 25943738
Electronic International Standard Serial Number (EISSN)
- 1536-481X
Digital Object Identifier (DOI)
- 10.1097/IJG.0000000000000264
Language
- eng
Conference Location
- United States