Provide a valuable resource to your clients or customers by linking to this resource page. Just place the following link on your website.
Retinal vasculature is the network of blood vessels that carries oxygen and nutrients to the retina. This system includes arteries, veins, and tiny capillaries spread across the retinal layers. Healthy blood flow supports clear sight and normal retinal function. Changes in these vessels can show up on eye exams and imaging.
read more about retinal vasculature ...The central retinal artery enters the eye near the optic nerve and branches across the retina. Veins collect blood and carry it back out of the eye. The outer retina also relies on the choroid, which sits under the retina. Together, these layers support the retina's high oxygen needs.
Fluorescein angiography uses dye to show blood flow and leakage in retinal vessels. OCT angiography, also called OCTA, maps flow without dye in many cases. These scans can show areas with reduced flow or abnormal vessel growth. Results get reviewed with symptoms and a dilated exam.
Diabetes can damage small vessels and cause swelling in the macula. High blood pressure can narrow vessels and raise the risk of bleeding. Blockages like retinal vein occlusion can cause sudden blur. Some retina conditions also involve new, fragile vessels that leak.
Sudden vision loss, new distortion, or a dark spot in central vision needs quick evaluation. A sudden shower of floaters, flashes, or a curtain-like shadow can signal a retinal tear or detachment. New double vision or eye pain also needs a check. When in doubt, call an eye clinic right away.
No. Retinal vessels run within the retina, while choroidal vessels sit under the retina. Both support vision, but both supply different layers. Imaging can look at each system.
Yes. High blood pressure can narrow or stiffen retinal vessels and raise the risk of bleeding. It can also cause swelling in severe cases. Regular eye exams can spot changes early.
A retinal vein occlusion is a blockage in a retinal vein that slows blood drainage. It can cause sudden blur, swelling, or bleeding. Treatment depends on the type and severity.
Yes. Diabetes can weaken small vessels and lead to leakage and swelling. It can also trigger abnormal new vessel growth in advanced cases. Good diabetes care and eye exams help lower risk.
Fluorescein Angiography. EyeWiki. https://eyewiki.org/Fluorescein_Angiography. Date Accessed February 17, 2026.
Optical Coherence Tomography Angiography. EyeWiki. https://eyewiki.org/Optical_Coherence_Tomography_Angiography. Date Accessed February 17, 2026.
Diabetic Retinopathy. National Eye Institute. https://www.nei.nih.gov/learn-about-eye-health/eye-conditions-and-diseases/diabetic-retinopathy. Date Accessed February 17, 2026.
Hypertensive Retinopathy. EyeWiki. https://eyewiki.org/Hypertensive_Retinopathy. Date Accessed February 17, 2026.
Retinal Vein Occlusion. American Academy of Ophthalmology. https://www.aao.org/eye-health/diseases/retinal-vein-occlusion. Date Accessed February 17, 2026.