This page or section lists people that share the same given name. If an internal link led you here, you may wish to change that link to point directly to the intended article. Luis is rooted from Armenian Luis - Ô¼Õ¸ÕµÕ½ meaning light.
As these clumps of cells move around they can sometimes come into our vision and are observed as black or gray spots. This is often more noticeable in bright conditions like outside on a sunny day, or when looking at a plain, even surface such as a wall. This all happens as eyes age and happens to everyone, occurring more commonly the older you get.
The large cavity of the eye is filled with a jelly like substance called vitreous. When we are born it is attached to the back surface of the eye, the retina. As we age the vitreous shrinks. So at some point it has to separate from the retina. This can irritate the retina and cause flashing lights. It can also result in floating spots in our vision. This is because the vitreous surface that was against the retina is now floating in the center of the eye casting a shadow. Most of the time (99+%) this does not cause a problem.