Johnson's autobiography The Rock Says..., co-written with Joe Layden, was published in 2000. It debuted at No. 1 on The New York Times Best Seller list, spent 20 weeks on The New York Times bestseller list and sold 720,000 copies in hardcover alone.
1 Posterior uveitis, which can cause eye floaters, may be caused by infection or inflammatory diseases, among other causes. 2  Bleeding in the eye. 3  Bleeding into the vitreous can have many causes, including injury and blood vessel problems. 4  Torn retina.
Some people find that floaters can be a nuisance, but most people become used to them. They rarely cause problems with your vision. Why do black spots in vision occur in one eye? Some people are born with floaters as some research have revealed. Other floaters occur as you get older when the gel in the eye, the vitreous humour, naturally shrinks.