Where does the optic nerve head get its blood supply from

08.07.2018 | by Admin
Blood Supply Of Eye and Optic Nerve. Since there are no photoreceptors cones and rods in the optic nerve head, this area of the retina cannot respond to light stimulation. The ganglion cell axons form the optic nerve after they leave the eye. Alterations in optic nerve head ONH blood flow have been implicated in the pathogenesis of glaucoma.

Internalcarotid cervical petrous cavernous cerebral ophthalmic.

Sequential photographs of the optic nerve head after an intravenous injection of fluorescein dye provide a detailed topography of its vascular system as a function of time. You can check your broadband, mobile, landline and TV usage, and get a helping hand if you need it. It is a sensory paired nerve transmitting visual or sight. Densi- tometric techniques can be utilized as a means of objective analysis and measurement to separate normal vascular patterns from those of the glaucomatous patient. The lamina cribrosa is nourished by branches from the short posterior ciliary arteries, either directly or from the circle of Zinn-Haller. Blood supply of optic nerve head.
Where does the optic nerve head get its blood supply from
Because there are no rods or cones overlying the optic disc, it corresponds to a small blind spot in each eye. Arterial supply Internal carotid artery External carotid artery. The optic disc or optic nerve head is the point of exit for ganglion cell axons leaving the eye. The pre-laminar region gets its vascular input from the peripapillary choroid. Surface layer of optic disc retinal arterioles Prelaminar region centripetal branches of. Longitudinal section of a normal rhesus monkey optic nerve showing the region of the optic nerve head and the retrolaminar optic nerve and Bergmeisters papilla BP.