Retinal Vein Occlusion: Causes, Symptoms, and Treatment
Medically reviewed by Harsha Moole, MD, Internal Medicine. Last reviewed: October 2, 2026.
What kind of doctor treats Retinal Vein Occlusion?
An ophthalmologist, a medical doctor specializing in eye care and surgery, usually treats retinal vein occlusion. Many patients see a retina specialist with extra training in retinal diseases. Optometrists often find the problem first and refer the patient onward. A direct primary care or concierge doctor can be a first stop for an evaluation and can refer you to a specialist when needed.
What it is
Retinal vein occlusion is a blockage of a small vein that carries blood away from the retina, the light-sensing layer at the back of the eye. Blood and fluid back up, and the swelling can blur or distort vision.
Symptoms
The most common symptom is sudden blurring or loss of vision in one eye, often with a dark spot or wavy, distorted area. The change is usually painless, so some people do not notice it right away.
Causes and who gets it
A retinal vein occlusion happens when a clot or narrowing blocks the vein. It is more common in people with high blood pressure, diabetes, high cholesterol, or glaucoma, and smoking raises the risk. It becomes more likely with age.
How doctors diagnose it
An eye doctor will dilate the pupil with drops so the retina can be seen. They may take a fluorescein angiography photograph, in which an injected dye shows blood flow in the eye, or an optical coherence tomography scan that measures retinal swelling.
Treatment
Treatment depends on how much the retina is swollen and how vision is affected. The most common treatment is an injection of medicine into the eye that reduces swelling by blocking VEGF, a protein that promotes swelling and abnormal blood vessel growth. Laser treatment may help in certain cases.
When to see a doctor
Sudden blurring or loss of vision in one eye needs prompt medical attention, even if it is painless. The same is true for a new dark spot, wavy lines, or a curtain-like shadow.
How a direct primary care or concierge doctor fits in
A direct primary care doctor charges a flat monthly fee instead of billing insurance, while a concierge doctor usually charges more and often works alongside insurance. Either can manage conditions that raise the risk of retinal vein occlusion and arrange a fast referral to an eye specialist.
Common questions
Can retinal vein occlusion go away on its own?
Mild blockages sometimes improve as the swelling settles, but this varies a lot from person to person. An eye doctor needs to monitor the eye and decide whether treatment is needed. Waiting without an exam is not safe, because other eye problems can look similar.
Does it affect both eyes?
It usually affects one eye at a time. People who have had one retinal vein occlusion have a higher chance of one in the other eye later. This is another reason to control blood pressure, blood sugar, and cholesterol.
Is it the same as a stroke in the eye?
People sometimes call it that because a blood vessel is blocked, similar to some strokes. It affects vision rather than the brain. However, it signals that blood vessel disease may be present elsewhere in the body.
Can it be prevented?
There is no guaranteed way to prevent it. Controlling blood pressure, blood sugar, and cholesterol, not smoking, and having regular eye exams lower the risk of blood vessel disease in the eyes.
Sources
Medical Disclaimer
This content is for general educational and informational purposes only and is not medical advice. It is not a substitute for professional medical advice, diagnosis, or treatment, and reading it does not create a doctor-patient relationship. Always seek the advice of your physician or another qualified health provider with any questions about a medical condition, and never disregard or delay seeking professional advice because of something you read here. If you think you may have a medical emergency, call 911 (or your local emergency number) immediately.
