Vitreous & Retina

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Hereditary / Congenital
Bilateral prepapillary vascular loops.

  • Can be arterial or venous.
  • Usually congenital and most commonly unilateral.
  • Clinical features:
    • Usually gives no symptoms, unless it is complicated with vascular obstruction
    • Signs:
      • May appear as simple hairpin loops, in a figure eight, or in a corkscrew configuration
      • The loops usually project from the optic disc to the vitreous cavity and return to the optic disc
      • Can be associated with persistent posterior hyaloid vessel where the loops extend into Cloquet's canal

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