Pinguecula
Pinguecula
Pinguecula (pronunciation: pin-GWEK-yoo-lah) is a common, non-cancerous growth of the clear, thin tissue (conjunctiva) that lays over the white part of the eye (sclera).
Etymology
The term "Pinguecula" is derived from the Latin word "pinguis", which means fat. This is in reference to the yellowish appearance of the lesion.
Definition
A Pinguecula is a yellowish, slightly raised lesion that forms on the surface tissue of the white part of the eye, usually on the side closer to the nose. It is caused by a deposit of protein, fat, or calcium and is a change in the normal tissue that results in a deposit of protein, fat and/or calcium. It is similar to a callus on the skin.
Symptoms
Symptoms of a Pinguecula include a noticeable growth on the eye, redness, irritation, a feeling of having something in the eye, and dryness.
Causes
The exact cause of Pinguecula is unknown, but they are believed to be caused by ultraviolet radiation from the sun. Other factors such as dry eye disease and environmental elements such as wind and dust are also thought to cause Pinguecula.
Treatment
Treatment for Pinguecula depends on the severity of the symptoms. If the symptoms are mild, no treatment is necessary. For those with more severe symptoms, treatment options include lubricating eye drops, mild steroid eye drops, or surgery for those with particularly large and uncomfortable Pinguecula.
Related Terms
- Pterygium: A growth of fleshy tissue, usually starting from the conjunctiva, that extends over the cornea. It can be distinguished from a Pinguecula by its wedge or wing-shaped appearance.
- Conjunctiva: The clear, thin membrane that covers part of the front surface of the eye and the inner surface of the eyelids.
- Sclera: The white part of the eye, a tough, opaque tissue that serves as the eye's protective outer coat.
External links
- Medical encyclopedia article on Pinguecula
- Wikipedia's article - Pinguecula
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