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Differential Diagnosis of Monocular Diplopia

Following are differential diagnosis of Monocular Diplopia.
(a) Anterior segment causes, (b) Retinal abnormalities, (c) Cortical Diplopia

Anterior segment
  1. Refractive error
  2. Cataracts
  3. Keratoconus
  4. Astigmatism
  5. Corneal opacities
  6. Post-op Cataract surgery
Retinal abnormalities
  1. Retinal folds
  2. Retinal hemorrhage
  3. Epiretinal membrane
Cortical Diplopia