The<unk>  is typically classified is as open angle or closed angle and as primary or secondary. There have been multiple schemes proposed for the classification for<unk> . However the classification of the<unk> s based on initial events and classification based on mechanisms of outflow obstruction are commonly used.
Glaucoma classification
Aortitis classification
Retinitis classification
Acute retinal necrosis classification
Cataract epidemiology and demographics
Glaucoma epidemiology and demographics
Diabetic retinopathy epidemiology and demographics
Cyanosis classification