Corneal sensations are diminished in:: (A) Herpes simplex, (B) Conjunctivitis, (C) Fungal infections, (D) Marginal keratitis
Answer is A. Herpes simplex infection is a common cause of corneal sensory loss, although less severe than in keratitis caused by reactivation of varicella-zoster virus. Some patients with active HSV keratitis present with sensations of spontaneous pain, discomfo, and dryness.