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Abstract #11245 Published in IGR 6-3
Visibility of lamina cribrosa pores and open-angle glaucoma
Healey PR; Mitchell PAmerican Journal of Ophthalmology 2004; 138: 871-872
PURPOSE: To determine prevalence and associations of visible lamina cribrosa pores in an older population and assess whether this feature is associated with open-angle glaucoma (OAG). DESIGN: Case-control study nested within a large, population-based cross-sectional study. METHODS: The Blue Mountains Eye Study examined 3654 persons (82.4% of permanent residents of a defined area) aged over 48 years. Stereo optic disk photographs were taken and graded reliably in a masked fashion. RESULTS: Lamina pore visibility was associated with larger vertical cup-disk ratio and optic disk diameter, hyperopic refraction, and male gender. Pores were slightly less visible with increasing age. They were visible in 70.8% of subjects with open-angle glaucoma but in only 29.3% of normals. This strong association disappeared after adjusting for other variables. CONCLUSION: Lamina cribrosa pores are commonly visible in glaucoma subjects and less commonly in normals. This association, however, is almost entirely because of an increased visibility associated with larger vertical cup-disk ratio and optic disk size.
Dr. P.R. Healey, University of Sydney Department of Ophthalmology, Westmead Millennium Institute, Westmead Hospital, Westmead, Australia. phealey@glaucoma.net.au
Classification:
2.14 Optic disc (Part of: 2 Anatomical structures in glaucoma)
6.8.2 Posterior segment (Part of: 6 Clinical examination methods > 6.8 Photography)
