KF-287 pinhole glasses

1、The glass helps to relax the eyeball muscle, and adjust eye focus.2、Theory is very simple: when the eyes can only look through the small  holes, they naturally change focus to a relaxing standard, so that the eyeballs are relieved from the previous nervous focus.3、You can feel the relaxation once you ware it and afterwards.4、Good and simple eye relaxation for a large population whose job causes 5、tired eyes: students, teacher, white collar, computer users.. age from child to aged people, etc.