Definition
Corneal injury describes an injury to the cornea, the crystal clear (transparent) tissue covering the front of the eye.
See also: Corneal ulcers and infections
Overview, Causes, & Risk Factors
The cornea works with the lens of the eye to focus images on the retina. Injuries to the cornea are common.
Superficial (surface) corneal injuries, called corneal abrasions, may be caused by:
- Something getting into the eye (such as sand or dust)
- Overuse of contact lenses or lenses that don’t fit correctly
- Exposure to ultraviolet radiation
You are more likely to develop a corneal injury if you work in a dusty environment, are exposed to sunlight or artificial ultraviolet light for long periods of time, or if you overuse or have ill-fitting contact lenses.
Penetrating (deep) corneal injuries may occur with major trauma. High speed particles, such as chips from hammering metal on metal, are particularly dangerous.
Pictures & Images
Cornea
The cornea is the crystal clear portion of the surface of the eye that lets light enter. The cornea is well supplied with nerve endings which is why some people can never get used to wearing contacts.
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Corneal injury : Overview, Causes, & Risk Factors
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Corneal injury : Symptoms & Signs, Diagnosis & Tests
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Corneal injury : Treatment
Review Date : 7/28/2008
Reviewed By : Manju Subramanian, MD, Assistant Professor in Ophthalmology, Vitreoretinal Disease and Surgery, Boston University Eye Associates, Boston, MA. Review provided by VeriMed Healthcare Network. Also reviewed by David Zieve, MD, MHA, Medical Director, A.D.A.M., Inc.
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