CD79A and ocular cicatricial pemphigoid: The revelation of linear deposition of IgA on epithelial basement membrane on a conjunctival biopsy with direct immunofluorescence is the gold standard in OCP diagnosis, though a negative pathology report does not exclude OCP.[1,3,5,6] Therefore, OCP can still be diagnosed based on clinical characteristics even if the biopsy turns out to be negative.