Preretinal haemorrhage and Flame shaped haemorrhage

By posted on August 27, 2015 12:08PM
Preretinal haemorrhage an Flame shaped haemorrhage

Preretinal haemorrhage an Flame shaped haemorrhage

Preretinal (Subhyaloid) hemorrhages:

  • 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.

Flame shaped haemorrhage:

  • A form of intraretinal hemorrhages
  • Hemorrhage from the superficial capillary plexus.
  • Feather- or flame-shaped hemorrhages with indistinct borders indicate that blood accumulates at the level of nerve fiber layer, reflecting the structure of the nerve fiber layers that run parallel to the retinal surface.
Preretinal haemorrhage an Flame shaped haemorrhage
Preretinal haemorrhage an Flame shaped haemorrhage

Source: Ophthalmology Notes

Ophthalmology Atlas(Photos of cases)

Preretinal haemorrhage an Flame shaped haemorrhage

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