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Retinal cysts as in cystoid macular edema occur in the center, cause blurring and are due to inflammation, usually after surgery. Cysts in the peripheral retina are quite normal and are sometimes called cystic retinal tufts. Occasionally, cystic tufts can be torn by acute vitreous separation causing a retinal tear which may be lasered to prevent detachment. ...
A retinal vessel occlusion is a blockage in the blood vessels of your eye that can cause sight loss. There are two types of retinal blood vessels, arteries and veins, and either of these can be affected by an occlusion.therosclerosis is a problem with the condition of the inside of the blood vessel's wall. Blood vessels are like tubes with the blood flowing smoothly through them. Atherosclerosis is a problem with the inside of the tube. The tube is usually wide and smooth so that the blood flows directly through it.