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An optic nerve head pit is a congenital condition, but one that may be associated with degenerative complications. The pit develops as an anomalous outpouching of neuroectoderm, surrounded by a connective tissue capsule that communicates with the subarachnoid space.
Larger and more temporally located pits carry a substantial risk of non-rhegmatogenous serous retinal and macular detachment.
Symptoms
Optic nerve head pits are asymptomatic in the absence of macular retinal detachment. When this complication occurs - usually in the third or fourth decade - potential symptoms include metamorphopsia (distortion of objects), micropsia (objects appearing small) and blurred vision.
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