Yep, it could cause Computer Vision Syndrome (CVS) if you overuse it. The laptop is designed for people to have more flexibility and convenience to use computers. Unlike desktop, it could take anywhere if you want easily. However, it could cause your eyes easier fatigue due to the distance between you and the computer is not stable. And you would keep using laptop in a longer period because it has the possibility for you to bring in any occasion. Even it could cause eye problems as well, like nearsightedness. Furthermore, it could damage your eye vision because the strong and bright UV lights that you could not see physically.