Mucin tear film deficiency occurs in
Ans. (d) Herpetic keratitisRef: Khurana anatomy, 2/e, p. 389Soluble surfactant (Mucin) deficiency is caused by ocular surface disorders affecting the goblet cells which secrete mucus forming the innermost layer of the tear film. Herpes infection causes Keratoconjunctivitis and hence mucin deficiency.
Keratoconjunctivitis sicca
Lacrimal gland removal
Canalicular block
Herpetic keratitis
Conjuctiva