Vitiligo: ocular and electrophysiological findings

Area of Science:

• Ophthalmology
• Dermatology
• Clinical Electrophysiology

Background:

• Vitiligo is a condition characterized by depigmentation of the skin.
• Ocular involvement, specifically of the retinal pigment epithelium (RPE) and optic nerve, is a potential complication of vitiligo.
• Assessing this involvement is crucial for understanding disease progression and impact.

Purpose of the Study:

• To investigate the involvement of the RPE and optic nerve in patients with vitiligo.
• To correlate electrophysiological findings with disease duration and extent of skin involvement.

Main Methods:

• Ophthalmological examinations were performed on 40 vitiligo patients.
• Electro-oculography (EOG) and pattern visual evoked potential (VEP) tests were utilized.
• Fundus examinations were conducted to assess ocular health.

Main Results:

• Fundus examinations revealed no vitiligo-specific changes.
• Twelve patients (30%) showed abnormal VEP results, and 4 (10%) had abnormal electro-oculography (EOG) findings (Arden Index < or = 180).
• Simultaneous abnormal VEP and EOG were associated with more extensive skin involvement and longer disease duration.

Conclusions:

• Pattern VEP and EOG are valuable tools for detecting subclinical RPE and optic nerve involvement in vitiligo.
• Electrophysiological abnormalities correlate with disease duration and the extent of cutaneous depigmentation.
• Simultaneous abnormal VEP and EOG indicate severe disease progression.