Retinal Vein Occlusion and Retinal Artery Occlusion
Retinal artery or vein occlusion is caused where there is a clot that blocks blood flow to or from the thin layer of light-sensitive tissue at the back of the eye (retina). Sometimes this happens because the arteries or veins in the eye are to narrow, or from other health problems that affect blood circulation in the body. All of the blood to or from the eye flows through one large vessel (the central retinal artery and vein), so a blockage of the artery or vein, known as a central retinal artery/vein occlusion, can affect vision of the entire eye. The nerve cells in the retina can die and vision may be lost.
Symptoms of retinal artery/vein occlusion may include a painless blurring or loss of vision that usually happens in just one eye. The blurriness of vision may progress over the next few hours or days. Occasionally there is a complete sudden loss of vision almost immediately. If these symptoms are experienced, it is important to schedule an appointment with your ophthalmologist immediately. Although it is currently not possible to "unblock" a retinal artery or vein, a doctor can treat other health problems that may be associated with a retinal artery or vein occlusion. Dr. Calotti offers laser and injectable treatment for retinal vein occlusion, which can gradually improve vision over an extended length of time.