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What is the choroid?

Choroid is a thin layer of tissue that is part of the middle layer of the wall of the eye, between the sclera (white outer layer of the eye) and the retina (the inner layer of nerve tissue at the back of the eye). The choriod is filled with blood vessels that bring oxygen and nutrients to the eye.

This answer is based on source information from National Cancer Institute.
Laura C. Fine, MD
Ophthalmology
The choroid of the eye is sandwiched between the sclera (the white of the eye) and retina (the thin, light-sensitive inner layer at the rear of the eye). This membrane is packed with blood vessels that carry oxygen and other nourishment to the adjacent outer portion of the retina.

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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.