Floats are points in your field of vision and often look like black or gray spec or cobwebs that drift when you move your eyes. Dark spots or lines in your vision (floaters) are a symptom of retinal vein occlusion.
The retina, a light-sensitive tissue at the back of your eye, receives its blood supply through the retinal artery and retinal vein. When a vein becomes blocked, it is called a retinal vein occlusion. When a vein is blocked, blood and fluid spill onto the retina. When this happens, the area of the retina called the macula can become swollen. The bump affects your central vision.
High cholesterol is common in people with retinal vein occlusion. A 2008 study found that high cholesterol is twice as common in people with central retinal vein occlusion as in people without the eye disease. Other symptoms of retinal vein occlusion include vision changes in one eye, blurred vision in one eye, and pain in the affected eye.
