If it is difficult to see in one eye, it may be myopia, hyperopia or astigmatism in one eye. Some people have bad eye habits and like to read, write, draw, and play with cell phones sideways, lying down, or lying on their backs. This situation can easily lead to excessive eye use in one eye and not so excessive in the other eye, and the two eyes appear to have different degrees. If you have trouble seeing in one eye, it is recommended that you go to a hospital ophthalmology or optician for an optometry and prescription test to see what kind of prescription your eye is. If it is determined that there is a degree, such as driving or driving at night, watching movies, watching large screens, etc., you may need to wear glasses. Two eyes with different degrees are more prone to visual fatigue, and with glasses both eyes can see clearly and see things without being tired.