What is Central Retinal Artery Occlusion (CRAO)?

When a blood vessel supplying the retina of the eye becomes blocked, it can lead to significant vision loss. This condition, known as central retinal artery occlusion (CRAO), typically occurs suddenly and without pain.

The retina is the layer of nerve tissue at the back of the eye responsible for sensing light. It converts images into electrical signals that are transmitted to the brain via the optic nerve. A blockage in the retinal blood vessels can have severe consequences. Such blockages are often caused by a blood clot or cholesterol deposit. This is a serious condition that requires immediate medical attention. If a blood clot dislodges and travels to the brain, it could potentially result in a stroke.

Causes:

Central retinal artery occlusion is caused by a blockage in the central retinal artery. This blockage is commonly due to a blood clot or cholesterol build-up in the blood vessel.

Risk Factors:

The primary risk factors for CRAO include high blood pressure and aging. Diabetes also increases the risk, as do conditions that cause thicker-than-normal blood. Additionally, CRAO has been associated with the use of birth control pills in women.

Symptoms:

The symptoms of CRAO include:

- Sudden loss of vision in one eye

- Abrupt, complete blurring of vision in one eye

These symptoms are usually permanent. If the vision loss is partial or if only some blurring is experienced, it may indicate a branch retinal artery occlusion rather than CRAO.

At Sanjeevan Netralaya Ayurvedic Eye Hospital, Central Retinal Artery Occlusion (CRAO) is treated with great success.