Alteration of choroidal thickness in a case of carotid cavernous fistula: a case report and a review of the literature.

Background: To measure the alterations of the choroidal thickness in Carotid cavernous fistula (CCF) using enhanced depth imaging optical coherence tomography (EDI-OCT).

Methods: A 64-year-old woman was referred to us for redness, exophthalmos and visual disturbance in her right eye. She was diagnosed with CCF by magnetic resonance imaging (MRI) and magnetic resonance angiography.Observations; Embolization resulted in improvement of ocular symptoms, and there was a reduction of the subfoveal choroidal thickness in the right eye from 351 μm preoperatively to 142 μm postoperatively in EDI-OCT.

Conclusions: EDI-OCT demonstrated that the choroidal thickness increases occurred due to congestion in a CCF case.