Rose-Bengal test is -: (A) To detect the presence of conjunctival xerosis, (B) To test the pasteurized milk, (C) To detect the rabies antigen in corneal cells, (D) Is positive in connective tissue disorder
Answer is A. <p> Rose bengal test: It is a very useful test for detecting even mild cases of KCS (keratoconjuctivitis sicca). Depending upon the severity three staining patterns A,B and C have been described. A- severe cases with confluent staining of conjunctiva and cornea. B- moderate cases with extensive staining. C- mild/early cases with fine punctate stains in the interpalpebral area. {Reference: ophthalmology , A.K khurana}