Fluorescence irido-corneal photography.

Fluorescein is widely used in ophthalmology for various purposes. Ehrlich (I882) observed that fluorescein introduced intravenously appeared in the aqueous humour. This phenomenon was employed for examination of the blood-aqueous barrier by Amsler (I946). Pfluger (I882) introduced a method of staining corneal erosion and ulceration by the use of fluorescein.