Sudden flashes, floaters or a shadow in your vision?Flashes, floaters, a shadow? It can be a retinal detachment.

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Close-up of an amber eye and iris
ConditionEmergency: same-day care

Retinal artery occlusion (eye stroke)

চোখের স্ট্রোক

A retinal artery occlusion is a blockage of the artery feeding the retina, a 'stroke of the eye'. It causes sudden, painless loss of vision in one eye and is an emergency for both the eye and the brain: go to an eye or stroke emergency immediately.

What is it?

A small clot or cholesterol plaque, usually from the neck arteries or heart, lodges in the retinal artery. The same process causes strokes, so people with an eye stroke have a high risk of a brain stroke in the following weeks.

Vision recovery is often limited, but urgent assessment protects the other eye and the brain.

CorneaLensVitreous gelRetinaMaculaOptic nerve
Highlighted in orange: the part of the eye involved.

Symptoms

  • Sudden painless loss of vision in one eye
  • A curtain or dark area that does not lift
  • Brief blackouts of vision lasting minutes (warning sign)

Risk factors and causes

  • High blood pressure
  • Diabetes
  • High cholesterol
  • Smoking
  • Heart rhythm problems
  • Neck artery narrowing
When to see a retina specialist

Immediately. Call us and also seek a stroke assessment the same day.

Call +91 98306 66650

How it is diagnosed

  • Retina examination
  • OCT
  • FFA
  • Physician tests: BP, sugar, heart and neck artery scans

Treatment options

Emergency stroke work-up

With a physician or neurologist, the same day.

Retina follow-up

To catch new vessels that may need laser or injections.

Retinal artery occlusion (eye stroke) cost in Kolkata

Consultation ₹500, OCT ₹1,000, FFA ₹3,500.

Treatment / testOur priceTypical Kolkata range
Retina specialist consultationper visit₹500₹500 – ₹1,500
OCT scan (retina / macula)per scan₹1,000₹1,000 – ₹2,500
Fundus fluorescein angiography (FFA)per test₹3,500₹2,500 – ₹5,000

Our prices are the hospital's published prices. Kolkata ranges are indicative 2026 ranges across private eye hospitals in the city. Your final cost depends on the eye, the medicine, and the gas, oil or lens used, and is given to you in writing before any procedure.

Cashless and government schemes

CGHSWBHSESI / ESICAirport Authority of IndiaFCIWest Bengal PoliceCashless TPAs & health insurance

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Retina specialists for retinal artery occlusion (eye stroke)

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Frequently asked questions

Can vision come back after an eye stroke?

Sometimes partly, especially if blood flow returns quickly. Fast assessment matters.

Related

Written by the retina team at Spectra Eye Hospital. Last updated 22 October 2026. This page explains common situations and is not a substitute for an eye examination.

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Consultation ₹500 · OCT ₹1,000 · same-day emergency checks · cashless CGHS, WBHS, ESI