Preretinal Hemorrhage

Clinical Features

• Occur either in the level of subhyaloid space between posterior vitreous face and retina or under internal limiting membrane.
• Localized vitreous gel detachment may occur.
• Horizontal blood level or boat-shaped hemorrhage is usually apparent, which obscures the underlying retina.
• Fluorescein angiography demonstrates blockage of underlying details in areas of hemorrhages.
• Underlying causes include retinal tear, bleeding from neovascularization, rupture of the internal limiting membrane, hypertensive retinopathy, posterior vitreous detachment, and vascular occlusion.