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What is retinal angiography?

To more closely examine the retina (the back of your eye) and choroid (blood vessels under the retina), your ophthalmologist (Eye M.D.) may use a diagnostic technique called angiography (pronounced an-jee-AHG-ruh-fee).
A colored dye is injected into a vein in your arm, where it travels throughout the blood vessels in your body. As the dye passes through the blood vessels in the eye, a special camera takes photographs of the retina or choroid blood vessels.
Two types of dyes can be injected into the vein: fluorescein (pronounced FLOR-uh-seen) or indocyanine green (ICG).

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Important: This content reflects information from various individuals and organizations and may offer alternative or opposing points of view. It should not be used for medical advice, diagnosis or treatment. As always, you should consult with your healthcare provider about your specific health needs.