Hemorrhage In Retina

HEMORRHAGE IN RETINA


HEMORRHAGE IN RETINA        

  • Clinical appearance of retinal hemorrhage is determined by the location of blood in the retina.

Retinal hemorrhages are categorized as:

1. Superficial hemorrhage (Flame shaped/ Splinter shaped):

  • Located superficially in the superficial nerve fiber layer.

2. Deep hemorrhage (Dot blot): Occur in deeper retinal layers.

3. Retrohyaloid (subhyaloid) hemorrhage (Boat-shaped or scaphoid):

  • Located anterior (internal) to the retina, within retrohyoid space.

4. Subretinal hemorrhage: Located deep (external) to the retina.

5. Vitreous hemorrhage: Intravitreal hemorrhage m/c by retinal lesions. 

CHERRY RED SPOT

  • Central part of macula appears as a red spot, whenever there is retinal edema.
  • This is because, vascular choroid shins through the very thin area of retina at this area.

Causes of cherry red spot

  1. GM2 gangliosidoses (Tay sachs & sandhoff)
  2. GM1 gangliosidoses
  3. Niemann- Pick’s disease
  4. Gaucher’s disease
  5. Metachromatic leukodystrophy
  6. Central retinal artery occlusion (CRAO)
  7. Trauma (Berlin’s edema/ commotion retinae)
  8. Farber’s disease
  9. Goldberg’s disease
  10. Hurler’s syndrome
  11. Mucopolysacharidosis VII
  12. Multiple sulfatase deficiency
  13. Poisoning-Carbon mono-oxide, methanol
  14. Rarely in Krabbe’s disease

Exam Important

  • The superficial retinal hemorrhage is seen in Nerve fibre layer of retina.

CHERRY RED SPOT

  • Central part of macula appears as a red spot, whenever there is retinal edema.
  • This is because, vascular choroid shins through the very thin area of retina at this area.

Causes of cherry red spot

  1. GM2 gangliosidoses (Tay sachs & sandhoff)                         
  2. GM1 gangliosidoses
  3. Niemann- Pick’s disease
  4. Gaucher’s disease
  5. Metachromatic leukodystrophy
  6. Central retinal artery occlusion (CRAO)
  7. Trauma (Berlin’s edema/ commotion retinae)
  8. Farber’s disease
  9. Goldberg’s disease
  10. Hurler’s syndrome
  11. Mucopolysacharidosis VII
  12. Multiple sulfatase deficiency
  13. Poisoning-Carbon mono-oxide, methanol
  14. Rarely in Krabbe’s disease
Don’t Forget to Solve all the previous Year Question asked on HEMORRHAGE IN RETINA

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