Late Leakage at the Macula

A leak occurs when there is loss of fluorescein into the extracellular space. A full leak begins early in the scan and increases in size and intensity with time. This photo shows late macular leakage and right angled vessels characteristics of macular talengiectasia.

• Cystoid appearance (inside the macula, aflower petal appearance because of the organization of the outer plexiform layer; outside of the macula, a honey- comb appearance): diabetic retinopathy, telangiectasis, choroidal or retinal inflammation, subretinal neovascularization, subretinal inflammation, choroidal tumours.

• Non-cystoid pattern (usually due to small retinal vessel leakage): hypertension, diabetes, or vasculitis.