Choroidal folds
There are horizontal lines (sometimes these lines may be oblique or vertical) on the posterior pole of the eye.

Choroidal folds may be idiopathic but in the examination you need to show the examiner(s) that you know 
the possible association. Further examination include:

  • checking the affected for proptosis 
  • presence of subretinal fluid may suggest posterior scleritis


1. What are the causes of choroidal folds?

2. The following is the fluorescein angiography of a patient with choroidal folds. Which parts of the folds (ie crest or trough) are responsible for the lines of  hypofluroescence and hyperfluorescence respectively?

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