If vitreous is removed, the eye loses its structural integrity and collapses. Since the vitreous is avascular, vitreous hemorrhage sounds like an oxymoron. Vitreous has firm attachments to 3 areas of the inner eye. This is the strongest of all attachments and maintains its strength throughout life. Any traction of this area is transmitted to the adjacent peripheral retina.
Second attachment is at the circular zone of the optic nerve head.
Third area of firm attachment occurs to the retina along the course of the major retinal vessels. Tractional forces, whether traumatic or from pathologic vascularization of the retina, result in hemorrhage into the vitreous. An uncommon but interesting mechanism of vitreous hemorrhage occurs in Terson syndrome. This syndrome occurs mostly among younger individuals aged 30-50 years. Exact mechanism for vitreous hemorrhage is unknown, although it is thought that the sudden, increased, intracranial hemorrhage is transmitted via the optic nerve to retinal venules and capillaries, rupturing them.