Polycoria double pupil eye9/24/2023 Most often, pseudo polycoria is acquired in which case there may be direct iris trauma as in surgical intervention, photocoagulation, ischaemia, glaucoma or it may exist as part of a degenerative process such as I C E syndrome. Pseudo polycoria may be seen in conditions like iris coloboma or persistent pupillary membrane or it may coexist with syndrome which are characterized by mesodermal desgenesis. There have been previous reports of very few cases of true polycoria in the literature, some of which are associated with polar cataracts, glaucoma and retinal detachment. Some of the reported theories proposed to explain the development of true polycoria includes segregation of a portion of pupillary margin, partial closure of coloboma and differentiation of neural ectodermal cells into muscles fibres in abnormal situations. The mechanism responsible for development of true polycoria is unknown. Upon dilation of the primary pupil, the accessory pupils tend to undergo reflective constriction. In pseudo polycoria, the full thickness defect in the iris representing an additional pupillary opening does not have an intact splincter muscles. In true polycoria, the additional pupillary opening is surrounded by an intact splincter muscles.1 however the condition is extremely rare. There are two major types of polycoria namely: true polycoria and psendo polycoria. Multiple pupillary openings in the iris may be congenital or acquired in which case it emanates from a disease of the iris. Polycoria describes a clinical entity in which there is more than one pupil.
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