Vitreous & Retina



















Retina / Choroid Disorders
Fixed posterior folds are characteristics of advanced PVR.
Proliferative Vitreoretinopathy (PVR)

  • Most common cause of failure in retinal reattachment surgery
  • Characterized by the formation of cellular membrane on both surfaces of the retina and in the vitreous
  • Predisposed by retinal break
  • Contraction of the cellular membranes lead to tractional and rhegmatogenous retinal detachments
  • Clinical features:
    • Symptoms: loss of vision especially with extensive PVR involving the macula
    • Signs:
      • Retinal break
      • Diffuse vitreous haze, pigment clumps or clusters on the retina
      • Wrinkling of inner retina, retinal stiffness associated with decreased mobility of the vitreous
      • Full thickness, fixed folds which may be located posterior or anterior to the equator.
      • The severity is expressed by the number of clock hours involved in the proliferations
      • Condensed vitreous strands
  • Management:
    • Scleral buckling to close the retinal breaks in mild PVR
    • Surgical relief of traction
    • Retinopexy for stabilization of reattached retinal breaks

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