Pinguecula and Pterygium - Eye Disorders - Merck Manuals Professional EditionROAT.MELVIN
A small, flat, yellowish spot, sometimes raised and fatty-looking, on theCONJUNCTIVAover the exposed areas of the white of the eye. Pingueculas are almost universal in people living in tropical areas and, if large and protuberant, may lead to the development ofPTERYGIUM. ...
A pinguecula is a type of growth that can form on theconjunctivaof the eye. They are yellowish or very light brown and have a slightly raised, triangle shape. Pingueculae are not a type of cancer, but they can form when the eyes get too much exposure to UV rays. They usually appear ...
Pterygium cells are also migrating onto the corneal basement membrane overlying Bowman's layer. Fibroblasts that have accumulated beneath the migrating limbus do not immunostain for p53 and are making collagenlike material. Fibroblasts immediately next to Bowman's layer appear to be dissolving Bowman'...
A classification for limbal basal cell tumors is proposed, and the different stromal changes in pingueculae, pterygia, and limbal tumors are identified. Two cell types were also identified: a p53-positive pinguecula limbal epithelial cell (a pinguecula II cell) and a p53-positive pterygium ...
The risk of chronic impairment of sight owing to cumulative welding light injuries is very little in the present material, since only 2% had spheroid degeneration on the cornea (only discrete, peripherally located); there was no preponderance of pterygium. On the other hand, the many foreign ...
A pinguecula is a yellowish non-malignant lump that develops on the conjunctiva next to the cornea, but not over the cornea, as in a similar condition known as pterygium. In addition to this growth, other symptoms may include dry eyes, inflammation and redness. Pingueculae develop due to an...
Prevalence of pterygium and pinguecula: the Blue Mountains Eye Study. Aust N Z J Ophthalmol 1998; 26 (Suppl 1): S2–S5. Article Google Scholar Lim R, Mitchell P, Cumming RG . Cataract associations with pinguecula and pterygium: the Blue Mountains Eye Study. Am J Ophthalmol 1998; 126: ...
Pinguecula and Pterygium - Eye Disorders - Merck Manuals Consumer VersionROAT.MELVIN
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