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Spontaneous corneal scarring in xeroderma pigmentosum
1Department of Ophthalmology, College of Medicine, King Saud University and Department of Pathology, Consulting Clinics, Riyadh, Saudi Arabia.
Annals of Saudi Medicine
|May 1, 1996
Summary
Xeroderma pigmentosum patients can develop spontaneous corneal scarring due to UV light exposure, even without prior eye infections. This condition can lead to vision loss.
Area of Science:
- Ophthalmology
- Genetics
- Dermatology
Background:
- Xeroderma pigmentosum (XP) is a rare genetic disorder characterized by extreme sensitivity to ultraviolet (UV) radiation.
- XP patients have a significantly increased risk of skin cancers and ocular surface disease.
Purpose of the Study:
- To describe nine cases of xeroderma pigmentosum (XP) presenting with primary spontaneous corneal scarring.
- To investigate the relationship between XP, UV exposure, and ocular complications.
Main Methods:
- Comprehensive ophthalmologic and dermatologic examinations were performed on nine XP patients.
- Clinical and histopathological assessments of corneal and conjunctival tissues were conducted.
Main Results:
- All nine XP patients exhibited spontaneous diffuse corneal stromal scars without a history of ulcers or infectious keratitis.
- Seven patients had conjunctival squamous cell carcinoma; three underwent surgical excision.
- Corneal sensation was intact, and no corneal ulceration was observed in any patient.
Conclusions:
- Corneal and conjunctival changes in XP patients resemble those in sun-exposed skin, suggesting UV light as the primary cause of scarring.
- Direct UV exposure to ocular tissues in XP patients is implicated in corneal scarring and potential vision loss.
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