Pingueculae are seen as small, raised, thickenings of the conjunctiva. They may be yellow, gray, white, or colorless. They are almost always to one side of the iris--not above or below--and usually on the side closest to the nose.
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Special characteristics of materials include conductivity (ability to conduct heat or electricity), magnetism (ability to be attracted to or repelled by a magnet), hardness (resistance to scratching or deformation), and ductility (ability to be stretched without breaking). These characteristics determine how a material can be used in various applications and industries.
Most pingueculae and pterygia grow slowly and almost never cause significant damage, so the prognosis is excellent.
An eye doctor (ophthalmologist or optometrist) can usually diagnose pingueculae and pterygia by external observation, generally using an instrument called a slit lamp.
== Overview A pinguecula (pin gwe' cue la) is a benign, yellowish growth that forms on the conjunctiva. They usually grow near the cornea on the nasal side. Pingueculae (plural form of pinguecula) are thought to be caused by ultraviolet light and are most common among people who spend a great deal of time outdoors. This growth does not affect vision, but may cause irritation if it becomes elevated. In rare cases, the pinguecula may gradually extend over the cornea, forming a pterygium. Signs and Symptoms Pingueculae are harmless growths and rarely cause symptoms. · Yellowish, raised area on the conjunctiva · Irritation and scratchiness · Dry eye · Occasional inflammation of the conjunctiva · Redness if the area becomes irritated Detection and Diagnosis Pingueculae can often be seen with the naked eye; however, the doctor diagnoses the growth with a careful examination with a slit lamp microscope. Treatment Because of their benign nature, pingueculae rarely require treatment. Occasionally, the growth may become inflamed, causing irritation and dryness. The doctor may prescribe artificial tears for lubrication and mild anti-inflammatory medication to reduce swelling.
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