Irregardless of the company's guidelines, as a corneal surgeon, we discourage patients from sleeping with the contacts on. This can increase the chances of infection. The prosthesis for the artificial eye has a shape that is held in place by the lid. Rather than being a ball, it more has the shape of a sting ray. It was caused by overuse of contact lenses.
Floaters are a thickening of gel particles in the posterior part of the eye.
Typically, it is unlikely that it would be caused by contact lenses. If they are true floaters, there is no requirement to treat it. This is very common and trying to fix it can cause more damage than benefit. There is a new laser treatment that is very effective in preventing long-term damage. It needs to be instituted early in the disease process and this can only be achieved through close follow-up with an ophthalmologist.