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Retrobulbar blood flow lower in healthy eyes in persons of African descent compared with Europeans
Persons of African descent were found to have a lower retrobulbar blood flow than those of European descent, which may be a reason that those of African descent have an increased risk of glaucoma. The study included 24 subjects of African descent and 34 subjects of European descent, all with healthy eyes. Retrobulbar blood flow and retinal capillary blood flow were assessed in one eye of each subject. Retrobulbar blood flow measurements were taken in the ophthalmic artery, central retinal artery, temporal posterior ciliary artery and nasal posterior ciliary artery.