I don't know what this instrument is, but at present, the only medical means to correct vision are glasses and laser surgery. Nowadays, many advertisements on TV are exaggerated and have low credibility. Moreover, if myopia is formed by acupuncture, massage, drugs and the like, it is meaningless and may play a role in relieving fatigue, so it is also the gradual deepening of vision and it is impossible to relieve it. So I want you to think it over before you decide.