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  2. Dry eye syndrome - Wikipedia

    en.wikipedia.org/wiki/Dry_eye_syndrome

    Dry eye may also be caused by thermal or chemical burns, or (in epidemic cases) by adenoviruses. A number of studies have found that people with diabetes have an increased risk for the condition. [26] About half of all people who wear contact lenses complain of dry eyes. [4] There are two potential connections between contact usage and dry eye.

  3. Effects of long-term contact lens wear on the cornea - Wikipedia

    en.wikipedia.org/wiki/Effects_of_long-term...

    Long-term contact lens use can lead to alterations in corneal thickness, stromal thickness, curvature, corneal sensitivity, cell density, and epithelial oxygen uptake. . Other structural changes may include the formation of epithelial vacuoles and microcysts (containing cellular debris), corneal neovascularization, as well as the emergence of polymegethism in the corneal endoth

  4. Contact lens - Wikipedia

    en.wikipedia.org/wiki/Contact_lens

    Contact lenses, or simply contacts, are thin lenses placed directly on the surface of the eyes. Contact lenses are ocular prosthetic devices used by over 150 million people worldwide, [ 1 ] and they can be worn to correct vision or for cosmetic or therapeutic reasons. [ 2 ]

  5. What Causes Dry Eyes All of a Sudden Without a Previous ... - AOL

    www.aol.com/lifestyle/causes-dry-eyes-sudden...

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  6. Xerophthalmia - Wikipedia

    en.wikipedia.org/wiki/Xerophthalmia

    Xerophthalmia (from Ancient Greek xērós (ξηρός) meaning "dry" and ophthalmos (οφθαλμός) meaning "eye") is a medical condition in which the eye fails to produce tears. It may be caused by vitamin A deficiency, [1] which is sometimes used to describe that condition, although there may be other causes.

  7. Peripheral ulcerative keratitis - Wikipedia

    en.wikipedia.org/wiki/Peripheral_ulcerative...

    Contamination of contact lenses is another cause as fungi, bacteria and parasites, microscopic parasite acanthamoeba, in particular, could inhabit the surface of the carrying case of the contact lens. [4] When placing the contact lens to one's eyes, invisible microorganisms may contaminate the cornea resulting in PUK. [4] An extended period of ...

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