Myopia 400 degrees generally can not not wear glasses, in order to prevent myopia deepening, it is recommended to wear glasses treatment. Myopia is due to the growth of the diameter of the eyeball before and after the refractive system of the eye formed by the spot projection in the retina before the myopia is called myopia. 400 degrees of myopia belongs to the moderate myopia, generally remove the glasses after the vision loss of a larger degree, can not not be without glasses, so for the 400-degree myopia is generally recommended to wear glasses to treat. Therefore, for 400 degree myopia, it is generally recommended to wear eyeglasses. If you don’t wear eyeglasses, your vision will be blurred, which will easily lead to eye fatigue, which will result in eye soreness, dryness, tearing, dizziness and headache, and the speed of myopia will be accelerated in a long period of time. In addition, 400 degrees of myopia is moderate myopia, it is easy to cause a decrease in naked eye vision. Finally, it is important to go to a regular hospital for an early optometry checkup and to wear glasses accurately.