Diagnostic Tests

OCT (optical coherence tomography) is a retinal imaging exam that has become essential in ophthalmology. It allows highly precise analysis of the macula – the central area of the retina responsible for fine vision. Dr Julien Gozlan, ophthalmic surgeon in Paris 16, explains what macular OCT involves, when it is indicated, and how the examination is performed.

Fluorescein angiography is a retinal imaging examination that allows observation of blood circulation and identification of leaks, hemorrhages, or ischemia. Performed in the office, this examination helps establish a precise diagnosis and guide the treatment of macular conditions such as AMD, or retinal vascular disorders such as CRVO. Dr Julien Gozlan explains its principle, indications, procedure, and risks.

Indocyanine green angiography (ICG) is an imaging examination that highlights the choroidal circulation, located beneath the retina. Complementary to fluorescein angiography and macular OCT, indocyanine green angiography aids in diagnosing choroidal conditions and guides their treatment.

OCT angiography (or OCT-A) is a recent imaging technique that allows visualization of blood circulation in the retina and choroid without dye injection. It complements standard macular OCT and fluorescein angiography. Dr Julien Gozlan, ophthalmic surgeon in Paris 16, explains the principle, indications, and limitations of OCT angiography.