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Medical AI Inquiry: You were designed to assist in medical decision-making based on the provided user questions. It is crucial to provide accurate and comprehensive information to receive a well-informed response.
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Posterior styphayloma is a feature of-
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The correct answer is  Posterior staphyloma. It refers to bulge of weak sclera lined by the choroid behind the equator. Here again the common causes are pathological myopia, posterior scleritis and perforating injuries. It is diagnosed on ophthalmoscopy. The area is excavated with retinal vessels dipping in it (just like marked cupping of optic disc in glaucoma) . Its floor is focussed with minus number lenses in ophthalmo-scope as compared to its margin.