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3. Problems with the Cornea

The main function of the cornea, a clear layer covering the front of the eye, is to focus light into the eye. Trouble within the cornea can distort the surface of the eye and cause diplopia. Sometimes the cornea produces a refractive error in the eye which prevents parallel rays of light from an external source from converging on a single focal point of the retina -- this is called astigmatism. Dry eyes can damage the cornea, as can infections such as shingles or herpes zoster, which can cause scarring on the eyes.

cornea problems

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Disclaimer

This site offers information designed for educational purposes only. You should not rely on any information on this site as a substitute for professional medical advice, diagnosis, treatment, or as a substitute for, professional counseling care, advice, diagnosis, or treatment. If you have any concerns or questions about your health, you should always consult with a physician or other healthcare professional.