In recent times glaucoma is considered to be neuro-degeneration of optic nerve no optic nerve is supplied by only this. But also, ischemic changes taking part. We know optic nerve is supplied by post ciliary artery PCA after supplying the disc has got segmental destitution in the choroid and choroidal arteries are end arteries.
It follows that any condition where there is impairment in the blood supply of PCA will not produce changes in optic nerve but also in papillary choroid characterized by cavernous degeneration of optic nerve. The simple way of glaucoma classification is as follows Cong occurring during the intrauterine life Infantile from 3 birth to 3 years of life A juvenile from 3 years to 17 years Chronic simple open angle and closure glaucoma Sec glaucoma ocular hypertension low tension glaucoma normal tension glaucoma pigmentary neovascular glaucoma Pseudoexfoliation…
