Pupillary membrane | definition of pupillary membrane by Medical dictionary
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remnants of the central portion of the anterior layer of the iris stroma (the iridopupillary lamina) that occludes the pupil in fetal life, and normally atrophies about the seventh month of gestation. Persistent strands usually stretch across the pupil from one iris collarette to the other, without touching the pupillary margin. Failure to regress is a rare cause of congenital blindness.
pu·pil·la·ry mem·brane (pyū'pi-lar-ē mem'brān)
A membrane that develops from mesenchymal tissue posterior to the cornea; it occludes the pupil and usually atrophics during the seventh month of pregnancy.
Synonym(s): membrana pupillaris
[TA] , Wachendorf membrane
Wachendorf, Eberhard J., German botanist and anatomist, 1702-1758.
Wachendorf membrane - the protoplasmic boundary of all cells that controls permeability and may serve other functions through surface specializations. Synonym(s): cell membrane; pupillary membrane
References in periodicals archive
Macrophages engulf endothelial cell membrane particles preceding pupillary membrane capillary regression.
Vascular remnants of pupillary membrane in the albino rat eye.
Multiple ocular coloboma (MOC) with persistent pupillary membrane in the snow leopard (Panthera uncia).
Persistent pupillary membrane and congenital cataract in a litter of English cocker spaniels.
Laser and surgical management of hyperplastic persistent pupillary membrane. Ophthalmic Surg Lasers Imaging.
Persistent pupillary membrane: successful medical management.
Persistent pupillary membrane associated with aniridia.