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11 Cards in this Set

  • Front
  • Back
Retinal Detachment: Definition
A separation of the neurosensory retina from the retinal pigment epithelium
Retinal Detachment: Classification by Cause
Rhegmatogenous (common, caused by retinal tear)
Tractional (diabetes)
Exudative (rare)
Retinal Detachment: Classification by Anatomy
Macula-on: central vision spared, macula attached
Macula-off: central vision poor, macula detached
Rhegmatogenous Retinal Detachment: Risk Factors
Myopia, Family History, Previous Cataract Surgery, Trauma
Retinal Detachment: Pathogenesis
1) Increasing age = liquification of vitreous
2) Collapse of viteral matrix and formation of liquified pockets
3) Liquid moves suddenly behind the remaining solid matrix causing traction on vitreous
4) Posterior Vitreous Detachment causing traction on retina
5) Tear in neurosensory retina
6) Flow of liquid vitreous into subretinal space
7) Separation of sensory retina from RPE
8) Hypoxia and death of sensory retina (vision loss) without prompt treatment
Retinal Detachment: Symptoms
Photopsia (flashing lights), floaters, visual field defect, central vision loss (variable)
Treatment of Retinal Tear
Retinal Detachment: Treatment
Pneumatic Retinopexy (gas bubble injection)
Scleral Buckling
Pars plana vitrectomy
Pneumatic Retinopexy
Reattach retina and close tear using gas bubble - seal with cryoxy
limitations - must keep head in same position for 10-12 days, lower success rate than surgery
Scleral Buckling: Complications
post-up pain, induced myopia, ptosis, diplopia, induced astigmatism, late erosion/extrusion
Pars Plana Vetrectomy
Remove vitreous, replace with long-acting gas tamponade
Must stay in one position post-op