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Opportunistic ocular infections.

Since corticosteroids were introduced, a steadily increasing number of opportunistic pathogens have been causing major disease in both systemically and locally compromised hosts. In ocular disease, the most common cause of compromise (and of infection with such opportunistic pathogens as the herpeviruses, many gram-negative bacteria, numerous fungi and Toxoplasma) is the topical use of corticosteroids and antibiotic-corticosteroid preparations. To avoid the damaging and sometimes blinding results of opportunistic infection, the use of these preparations should be carefully restricted.