Patient: For many years, I have been going to a cheap optical store to save money, and the optometry is done in 3 steps at most, less than 5 minutes. Then recently I felt dizzy with glasses, and then went back to the store with a pair of glasses, found that the degree of glasses down to the right eye 250, left eye 50, wear a period of time feel better, but still feel dizzy. In the last few days, I tried not to wear glasses as much as possible and found that although they were blurry, they were much more comfortable and I didn’t feel dizzy. Young people (under 40 years old) should go to the hospital to have their glasses checked for eye diseases and then have their pupils dilated for optometry. The purpose is to relax the adjustment and avoid pseudo-myopia caused by over-adjustment. After that, the optometrist will perform medical optometry – objective optometry – and the resulting prescription is the basis for your prescription. According to that prescription, you should also try the lenses and adjust the comfort level of seeing far and near, and then prescribe the optometry prescription so that it will not deviate outrageously. The prescription you get will be ready to go to the optician for prescriptions. Your case should be the degree of optometry is not accurate, only based on self-perception to get the degree of subjective optometry, it will be due to your eye fatigue and change.