We know optic nerve head is supplied by post ciliary artery branch of an ophthalmic artery which in turn is a branch of c retinal artery. There have been recent advances in the blood supply of optic nerve head which is very important for understanding the pathophysiology of glaucoma, which in fact is a neurodegenerative disorder of optic nerve head and ANT and post-ischaemic optic neuropathy. What are the recent advances in blood supply?
It is posted ciliary artery after supplying the disc has got segmental distribution and choroid and choroidal arteries are end arteries. It means if there is any condition which impairs with blood supply of post c artery will not only produce changes in the disc but also in peripapillary choroid characterised by cavernous degeneration of optic nerve. Filling of blood in post c artery and peripapillary choroid depends upon perfusion pressure between and…
