short posterior ciliary artery

Set of short posterior ciliary arteries

An artery that branches from the ophthalmic artery and supplies the choroid and ciliary processes.

Loại Vessel
Cấu trúc cha artery
Tên Latin Set of short posterior ciliary arteries
FMA ID 70777

Câu hỏi thường gặp

What is the short posterior ciliary artery?
The short posterior ciliary arteries are branches of the ophthalmic artery that supply the choroid and ciliary processes of the eye. There are typically 15 to 20 short posterior ciliary arteries, and they are the primary blood supply to the outer layers of the retina via the choriocapillaris, as well as to the optic nerve head.
Where are the short posterior ciliary arteries located?
The short posterior ciliary arteries pierce the sclera around the optic nerve at the posterior pole of the eyeball. After penetrating the sclera, they enter the choroid and branch extensively to form the choriocapillaris, a dense capillary network beneath the retinal pigment epithelium. Some terminal branches contribute to the circulation of the optic nerve head.
What is the function of the short posterior ciliary arteries?
The short posterior ciliary arteries are involved in nourishing the outer retina, retinal pigment epithelium, and optic nerve head via the choroidal circulation and choriocapillaris. Because the outer retina lacks its own intrinsic blood supply, it depends on diffusion from the choroidal vessels supplied by these arteries.
What conditions may affect the short posterior ciliary arteries?
Giant cell arteritis is a well-known condition associated with occlusion of the short posterior ciliary arteries, which may be involved in anterior ischemic optic neuropathy. Atherosclerosis, systemic hypertension, and diabetes may also be associated with impaired flow. Compromise of the choriocapillaris may be involved in retinal and macular disease.
How are the short posterior ciliary arteries examined?
Indocyanine green (ICG) angiography is particularly useful for evaluating the choroidal circulation supplied by the short posterior ciliary arteries. Fluorescein angiography can reveal choriocapillaris filling patterns. Optical coherence tomography angiography (OCTA) provides non-invasive imaging of choroidal flow, and color Doppler ultrasound can assess flow in the major ciliary vessels.

Cấu trúc liên quan

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This content is for educational and informational purposes only. It is not a substitute for professional medical advice, diagnosis, or treatment. Always consult a qualified healthcare provider for medical decisions.

Data sources: Terminologia Anatomica, Foundational Model of Anatomy, Wikidata.