Imaging Methods in Retinal Artery Occlusion

Advances in ophthalmic imaging methods shed light on the diagnosis and treatment of retinal artery occlusion (RAO). RAO is an ocular emergency that can cause painless, sudden onset, unilateral vision loss or loss of visual field. RAO requires early diagnosis and treatment. Fundus fluorescein angiography (FFA), which can be used in diagnosis and follow-up, is an invasive method requiring intravenous dye application which can cause side effects. Recently, optical coherence tomography angiography (OCTA) has been widely used as an alternative to FFA in various ophthalmologic diseases. OCTA is a new type of angiography used for fundus imaging. It is a non-invasive method for measuring and quantifying the retinal microcirculation without the use of dyes. Many other imaging modalities used in ophthalmology clinics have been used in many areas of diagnosis and treatment of RAO patients. This review deals with the results of different imaging techniques used on patients with RAO.