Advantages of OCTA over FFA are:• A high-speed device- produces images in 10-15 seconds; FFA takes over 10-15 minutes
• Noninvasive; FFA needs injections
• No dye injected, instead uses motion contrast. Hence no leakage, staining and other side effects such as nausea and severe allergic reactions (anaphylaxis)
• Can acquire different scan sizes in the macula and the optic disc in about 3 seconds
• Can scan the other eye in the same sitting, unlike FFA, which is one eye per sitting
• Provides accurate size and localization. FFA results are highly variable and often obscured by subjective interpretation by doctors
• Visualizes both the retinal and choroidal vasculature
• Can be used for routine screening examinations for early diagnosis of vascular abnormalities, and for routine