Ligneous conjunctivitis is a rare disease characterized by acute or chronic recurrent conjunctivitis in which the conjunctival membranes acquire a wood-like consistency, due primarily to deposits of fibrin.¹,² Corneal involvement and chronic obstruction of the eye may lead to blindness. The disease is frequently associated with nasopharyngitis, tracheobronchial obstruction, otitis media, vulvovaginitis, and defective wound healing.²–⁹ Pseudomembranous conjunctivitis was first described in 1847 by Bouisson,¹⁰ and the term “conjunctivitis lignosa” was introduced by Borel in 1933.¹¹ More than 100 cases have been reported in the literature, but no satisfactory treatment has yet been found. The results of therapy . . .