A patient has a blistering disease affecting the conjunctiva with separation at the basement-membrane zone (risk of scarring and blindness). The appropriate referral is to:

Correct answer: A. An ophthalmologist

• A. Correct. Ocular involvement (as in mucous membrane pemphigoid) needs ophthalmology referral to prevent symblepharon and vision loss.
• B. Orthodontics manages tooth alignment, not ocular disease.
• C. Prosthodontics replaces teeth, not relevant to conjunctival disease.
• D. Radiology images tissues but does not manage the eye disease.