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A pinguecula is a common type of conjunctival stromal degeneration in the eye. It appears as an elevated yellow-white plaque in the bulbar conjunctiva near the limbus. [ 1 ] Calcification may also be seen occasionally.
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Pterygium should be differentiated from pinguecula, which is histologically and etiologically similar to pterygium. [17] [18] Unlike pterygium, pinguecula is seen only on the conjunctiva, it will not progress to limbus or cornea. Another condition which is similar to pterygium is inflammatory adhesion of conjunctiva to cornea known as ...
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Pinguicula, commonly known as butterworts, is a genus of carnivorous flowering plants in the family Lentibulariaceae.They use sticky, glandular leaves to lure, trap, and digest insects in order to supplement the poor mineral nutrition they obtain from the environment.
Pain is not typically present in pellucid marginal degeneration, and aside from vision loss, no symptoms accompany the condition. However, in rare cases, PMD may present with sudden onset vision loss and excruciating eye pain, which occurs if the thinning of the cornea leads to perforation. [1]
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A major cause of Bitot's spots is vitamin A deficiency (VAD). [4] Rarely, pellagra due to deficiency of vitamin B 3 (niacin) may also cause Bitot's spots. [5] They can also be caused by Colestyramine , which is a bile acid sequestrant which can reduce the absorption of fat soluble vitamins (Vitamins A, D, E, K)