vitreous bulge vitreous bulge a vitreous bulge is a distortion or protrusion of the vitreous membrane into the anterior chamber of the eye, caused by pressure on the eye or iris. it is a relatively common complication during or following cataract surgery or extraction. a vitreous bulge can lead to a rupture and leakage of vitreous humor into the eye, a condition which requires immediate attention and is treated with corneal/scleral sutures.