Abstract
Isotretinoin (13-cis-retinoic acid) is commonly used for the treatment of acne vulgaris. We included 55 patients in this prospective study, and inspected them before, while and after therapy with isotretinoin regarding ocular side effects. Careful slit-lamp inspection, measurement of break-up-time and Schirmer-test and microbiological investigations of the conjunctival flora were performed. While staphylococcus aureus was cultured from the conjunctival sac before application of isotretinoin in 7.3%, this percentage increased to 61.8% during therapy. A pathological decrease of break-up-time was realized in 69.1% of the cases, the development of blepharitis in 40%. But in spite of the alteration of conjunctival flora, bacterial conjunctivitis developed in just 7.3% of the cases. However, only 34.5% of the patients showed symptoms of a conjunctivitis sicca, in spite of the impressive diminution of break-up-time in so many cases. All ocular side effects of isotretinoin were treatable and disappeared completely within 1 month after stopping therapy.
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