The first situation is that the prescription of the glasses worn is not suitable. If you find yourself with poor eyesight, you must go to a regular ophthalmology department for a standardized optometry process and fine prescription glasses in order to obtain the best corrected vision. Otherwise, if the glasses worn are not the right prescription, there will be dizziness, even nausea and other discomfort after wearing the glasses, and it is likely that the best corrected vision can not be obtained. The second situation is that the pupil distance of the glasses worn is not suitable, if the pupil distance is not consistent with your own pupil distance, you will also experience dizziness and other discomfort after wearing glasses. The third case is the new glasses, its material, degree size and transmittance, are different from the original old glasses, so may appear to wear the new glasses dizziness and other situations, need to have a period of adaptation time.