Preretinal haemoorhage with YAG laser hyaloidotomy

By posted on May 5, 2015 9:35AM
Preretinal haemoorhage with YAG laser hyaloidotomy

Preretinal haemoorhage with YAG laser hyaloidotomy

By Dr.Hala Abdulwahab

Name the sign, and interpret the two OCT pictures
Courtesy of Dr. Amgad El-Adawy
Thank u Dr.

Preretinal haemoorhage with YAG laser hyaloidotomy
Preretinal haemoorhage with YAG laser hyaloidotomy
Preretinal haemoorhage OCT
Preretinal haemoorhage OCT
Preretinal haemoorhage with YAG laser hyaloidotomyOCT
Preretinal haemoorhage with YAG laser hyaloidotomyOCT

By Dr.Mohamed Sehem It is sub ILM haemorrhage being drained into the subhyaloid space giving the double ring sign, one oct shows sub ILM accumulation of blood shadowing what lies behind , with area of ILM detachment overlying the blood , the other oct I think it is after laser drainage of blood into the subhyaloid space.

 

Preretinal (Subhyaloid) hemorrhages in a patient with proliferative diabetic retinopathy:

  • 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.

 

Preretinal hemorrhage due to a ruptured retinal macroaneurysm could be dispersed into the vitreous cavity with Nd:YAG laser photodisruption. It should be considered in the decision of Nd:YAG laser photodisruption that the visual increment may be limited in eyes that also have subretinal hemorrhage in the macula and that the hemorrhage beneath the ILM tends to remain longer than the subhyaloid hemorrhage.

Source:

Ophthalmology Atlas(Photos of cases)

Preretinal haemoorhage with YAG laser hyaloidotomy

 

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