[Fluorescein and its adverse effects]

The authors investigated physical and chemical properties of fluorescein, a substance widely used in ophthalmology. In view of the increased application of fluorescein angiography in the diabetological programme, the authors draw attention to possible undesirable effects of fluorescein and submit an account of complications recorded after application of this substance to 576 patients examined by this method at the Ophthalmological Clinic in Brno.