Retinal Artery and Vein Occlusion >>
- What is Retinal Artery Occlusion?
- Types of Retinal Artery Occlusion
- Symptoms of Retinal Artery Occlusion
- Causes of Retinal Artery Occlusion
- Treatment of Retinal Artery Occlusion
- What is Retinal Vein Occlusion?
- Types of Retinal Vein Occlusion
- Symptoms of Retinal Vein Occlusion
- Complications of Retinal Vein Occlusion
- Causes of Central Retinal Vein Occlusion
- Treatment of Retinal Vein Thrombosis
What is Retinal Artery Occlusion?
The retina is supplied by a network of fine arteries that provide it with essential nutrients. After nourishing the retina, the blood flows into the retinal veins, which carry it out of the eye. When a blockage or severe narrowing occurs in the veins or arteries, it results in an obstruction, commonly known as a retinal vein thrombosis.
Types of Retinal Artery Occlusion
There are two types of retinal artery occlusion:
- Branch retinal artery occlusion (BRAO): Occurs when one of the branch arteries in the retina becomes blocked.
- Central retinal artery occlusion (CRAO): Occurs when the central artery of the retina is blocked.
Symptoms of Retinal Artery Occlusion
Complete or partial loss of the visual field in one eye without any pain or other symptoms.
Causes of Retinal Artery Occlusion
- Clots in the carotid artery.
- Clots caused by heart valve diseases.
- Blood clotting disorders.
- Inflammation of blood vessels.
- Aging.
- High blood pressure.
- High cholesterol levels.
- Diabetes.
- Smoking.
- Obesity.
- Fractures and injuries.
- Tumors.
Treatment of Retinal Artery Occlusion
Lowering eye pressure:
This is done using eye drops or oral medications to reduce eye pressure.Improving circulation:
This includes draining some eye fluids and enhancing circulation through eye massage.Laser treatment for the retina:
Used to address abnormal blood vessels and ensure improved blood flow in the retina.
What is Retinal Vein Occlusion?
It occurs when one or more retinal veins become blocked due to a clot or narrowing of the artery caused by cholesterol buildup. This is similar to a heart attack.
Types of Retinal Vein Occlusion
There are two types of retinal vein occlusion:
- Branch Retinal Vein Occlusion (BRVO): Occurs when one of the branch veins in the retina becomes blocked.
- Central Retinal Vein Occlusion (CRVO): Occurs when the central vein of the retina becomes blocked.
Symptoms of Retinal Vein Occlusion
Blurred vision due to retinal vein occlusion, as it leads to fluid accumulation in the central vision area, affecting visual acuity.
Complications of Retinal Vein Occlusion
Retinal vein occlusion can lead to the formation of abnormal blood vessels in the retina, increasing the risk of bleeding or tissue formation due to vessel fibrosis. This can result in complications such as glaucoma and retinal detachment.
Causes of Central Retinal Vein Occlusion
- Aging.
- High blood pressure.
- High cholesterol levels.
- Diabetes.
- Smoking.
- Use of birth control pills.
- Blood clotting disorders.
- High eye pressure.
Treatment of Retinal Vein Thrombosis
Diagnosis and Follow-up:
Treatment begins with determining the accurate diagnosis and monitoring the condition of the retina.
Complication Treatment:
This includes eye injections with fluids in case of complications, such as fluid accumulation.