Introduction
Central retinal vein occlusion (CRVO) is a blockage in the main blood vessel that carries blood away from the retina (central retinal vein). The retina is the part of your eye that senses light and that sends signals to the brain that allow you to see.
CRVO can cause you to have blurry vision. It can also make you lose some or all of your vision. The condition usually affects only one eye.
What are the causes?
This condition is usually caused by a blood clot that forms inside the central retinal vein. Vision loss happens because the blockage in the vein causes fluid to leak out of the vein and collect in the retina.
What increases the risk?
This condition is more likely to develop in:
People who have a blood vessel disease that …show more content…
Diabetes.
Increased pressure inside the eye (glaucoma).
Increased blood clotting.
What are the signs or symptoms?
Symptoms of this condition include:
Sudden and painless vision loss. If the vision loss is partial, it may get worse over hours or days.
Sudden and painless blurry vision.
Tiny spots or clumps that move across your vision (floaters).
Pain or pressure in your eye (uncommon).
How is this diagnosed?
This condition is usually diagnosed by a health care provider who specializes in eye diseases (opthalmologist). To diagnose the condition the opthalmologist will do an eye exam. She or he may also:
Do an exam that involves having eye drops put in the eye (slit-lamp and dialated fundus exams).
Order tests that help diagnose the condition, such as:
A vision test.
A measurement of the pressure inside your eye.
A fluorescein angiogram. In this test pictures are taken of the retina after a dye is injected into the bloodstream.
Optical coherence tomography.
Order tests to find the cause of your condition and rule out other conditions. The tests may check for these problems:
Diabetes.
High levels of fat or cholesterol in your blood.
Abnormal blood clotting.
Check your blood
Central retinal vein occlusion (CRVO) is a blockage in the main blood vessel that carries blood away from the retina (central retinal vein). The retina is the part of your eye that senses light and that sends signals to the brain that allow you to see.
CRVO can cause you to have blurry vision. It can also make you lose some or all of your vision. The condition usually affects only one eye.
What are the causes?
This condition is usually caused by a blood clot that forms inside the central retinal vein. Vision loss happens because the blockage in the vein causes fluid to leak out of the vein and collect in the retina.
What increases the risk?
This condition is more likely to develop in:
People who have a blood vessel disease that …show more content…
Diabetes.
Increased pressure inside the eye (glaucoma).
Increased blood clotting.
What are the signs or symptoms?
Symptoms of this condition include:
Sudden and painless vision loss. If the vision loss is partial, it may get worse over hours or days.
Sudden and painless blurry vision.
Tiny spots or clumps that move across your vision (floaters).
Pain or pressure in your eye (uncommon).
How is this diagnosed?
This condition is usually diagnosed by a health care provider who specializes in eye diseases (opthalmologist). To diagnose the condition the opthalmologist will do an eye exam. She or he may also:
Do an exam that involves having eye drops put in the eye (slit-lamp and dialated fundus exams).
Order tests that help diagnose the condition, such as:
A vision test.
A measurement of the pressure inside your eye.
A fluorescein angiogram. In this test pictures are taken of the retina after a dye is injected into the bloodstream.
Optical coherence tomography.
Order tests to find the cause of your condition and rule out other conditions. The tests may check for these problems:
Diabetes.
High levels of fat or cholesterol in your blood.
Abnormal blood clotting.
Check your blood