Principle of using weak current to stimulate acupoints.
It is a kind of glasses to prevent myopia, suitable for students with nearsightedness, farsightedness, eye fatigue caused by excessive use of the brain or wearing glasses for a long time, etc.
Applicable people are computer operators, accountants, designers, secretaries, teachers, drivers, precision instrument workers and other related personnel.
This glasses has good sales and good feedback from users.