[Controlled hypotension in difficult intraocular anterior segment surgery (author's transl)].

During anaesthesia controlled hypotension -- induced by sodium nitroprusside -- was used in 60 patients undergoing intraocular anterior segment surgery. The advantages of this procedure are that the iris-lens diaphragma and the vitreous body have a lesser tendency to protrude than with other techniques despite even more superficial anaesthesia.