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Peripapillary CNV

This is another type of wet age-related macular degeneration (ARMD). It occurs when the process begins near the optic nerve, whereas normally wet ARMD begins at the fovea. The CNV (choroidal new vessels) grow near the optic nerve. At first the vision is good, as the fovea is not damaged. (The fovea is needed for sharp vision (reading, television, seeing faces etc). But sometimes the new vessels later spread towards the fovea, and then vision is reduced. Often the new vessels themselves do not reach the fovea, but they cause leakage and bleeding, and this spreads towards the fovea, damageing the retina and reducing vision. Unless the new vessels or leakage or bleeding, treatment is not needed. Patients are usually kept under observation. Sometimes the condition dries up by itself, and then patients no longer need regular checkups. Review Eye 2011

Peripapillary CNV; treatment is only needed if the vision is affected by the new vessels growth directly, but more usually by leaking or bleeding from the CNV. This happens when the fovea (yellow spot in this diagram) is affected.

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