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To determine prevalence and associations of visible lamina cribrosa pores in a n older population and assess whether this feature is associated with open angl e glaucoma (OAG). Case control study nested within a large, population based c ross sectional study. The Blue Mountains Eye Study examined 3654 persons (82.4 %of permanent residents of a defined area) aged over 48 years. Stereo optic dis k photographs were taken and graded reliably in a masked fashion. Lamina pore vi sibility was associated with larger vertical cup disk ratio and optic disk diam eter, hyperopic refraction, and male gender. Pores were slightly less visible wi th increasing age. They were visible in 70.8%of subjects with open angle glauc oma but in only 29.3%of normals. This strong association disappeared after adju sting for other variables. Lamina cribrosa pores are commonly visible in glaucom a subjects and less commonly in normals. This association, however, is almost en tirely because of an increased visibility associated with larger vertical cupdis k ratio and optic disk size.
To determine prevalence and associations of visible lamina cribrosa pores in an older population and assess whether this feature is associated with open angl e glaucoma (OAG). Case control study nested within a large, population based c ross sectional study. The Blue Mountains Eye Study examined 3654 persons (82.4% of permanent residents of a defined area) aged over 48 years. Stereo optic dis k photographs were taken and graded reliably in a masked fashion. Lamina pore vi sibility was associated with larger vertical cup disk ratio and optic disk diam They were visible in 70.8% of subjects with open angle glauc oma but in only 29.3% of normals. This strong association disappeared after adju sting for other variables . Lamina cribrosa pores are generally visible in glaucom a subjects and less commonly in normals. This association, however, is almost en tirely because of an increased visibilit y associated with larger vertical cupdis k ratio and optic disk size.