Vitreous & Retina

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Hereditary / Congenital
Chorioretinal Coloboma

  • Congenital lesion, characterized by absence of normal retina, RPE and choroid.
  • Clinical features:
    • Symptoms: depend on the location of the coloboma and ocular structures involved.
    • Signs:
      • Typically located in inferotemporal area
      • Can be unilateral or bilateral
      • May extend and involve the macula
      • Maybe associate with coloboma of other ocular structures along the embryonic fissure i.e. optic nerve, iris or lid
      • Choroidal neovascularization may develop at the margin of the coloboma
    • Associated with higher incidence of retina detachment.
  • Management: surgical retinal reattachment procedures include scleral buckling, vitrectomy and silicone oil tamponade.

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