twenty-two patients were selected and classified into four major groups : keratoconjunctivitis sicca ( 6 patients ; 11 eyes ) , stevens-johnson syndrome ( 9 patients ; 17 eyes ) , ocular pemphigoid or drug-induced pseudopemphigoid ( 3 patients ; 6 eyes ) , and surgery or radiation-induced dry eye ( 4 patients ; 4 eyes ) , based on the criterion that they remained symptomatic even under maximum tolerable conventional medical and/or surgical therapies .
C0013238
dry eye
C0015392
eyes