[Experimental ultrasonic echography of the vitreous in rabbit eyes (author's transl)].

Three groups of five rabbits each received intravitreal injections of 0.2 ml silicone oil, 0.2 ml physiological saline solution and 0.7 ml air, respectively. Needling of the vitreous body was carried out in three control animals. Changes in the vitreous were monitored by echography. According to our observations the vitreous tolerates all of these substances very well. However, syneresis and sometimes vitreous detachment are likely to occur.