The new glasses are common in the process of adaptation and prescription errors, as follows: 1, because the eyes have been used to the old glasses, the sudden replacement of new glasses will lead to different degrees and other aspects, need to have the adaptation process. If the dizziness is caused by adaptation, after a period of wearing, such as half a month or so will slowly adapt; 2, eye prescription errors, such as the difference between the two eyes, i.e. refractive error, may also be inaccurate measurement of the pupil distance of the two eyes, resulting in the lens center and the visual axis center does not correspond, may be due to the quality of the lens itself, and other reasons, then you need to re-fit glasses to solve.