Blood_Supply_to_Eyeball_Vaibhav.pptx eye

Blood_Supply_to_Eyeball_Vaibhav.pptx eye

• 1.
  Blood Supply tothe Eyeball Prepared by: Rachuri Venkata Ramanand Vaibhav Roll NO: 87 UNDER THE GUIDANCE OF DR.PROF ANANDA KUMAR PINGALI ASR HOMEOPATHIC MEDICAL COLLEGE AND HOSPITAL
• 2.
  Overview • • Arterialsupply to the eyeball • • Venous drainage • • Functional significance • • Clinical relevance
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  Ophthalmic Artery • •Main arterial source to the eyeball • • Branch of the internal carotid artery • • Enters orbit through optic canal • • Gives several branches supplying ocular structures
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  Central Retinal Artery •• Branch of ophthalmic artery • • Pierces optic nerve ~1 cm behind globe • • Supplies inner retinal layers • • End artery—occlusion leads to sudden, painless vision loss
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  Ciliary Arteries • •Short posterior ciliary arteries: supply choroid & outer retina • • Long posterior ciliary arteries: supply ciliary body & iris • • Anterior ciliary arteries: supply conjunctiva & sclera
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  Choroidal Circulation • •Rich vascular network beneath retina • • Supplies photoreceptor layer • • High blood flow maintains metabolic demands
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  Venous Drainage • •Central retinal vein drains retina • • Vortex veins drain choroid • • Drainage ultimately reaches cavernous sinus
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  Clinical Importance • •CRA occlusion → sudden blindness • • Ischemia of ciliary arteries → uveitis, scleritis • • Raised venous pressure → papilledema
• 9.
  References • 1. Gray'sAnatomy: The Anatomical Basis of Clinical Practice • 2. Clinical Anatomy by Richard Snell • 3. Ophthalmology by Yanoff & Duker • 4. www.aao.org (American Academy of Ophthalmology)