Should match glasses be a few lower than actual degree

In general, glasses do not need to be lower than the actual power, but if there are special circumstances, it may be necessary to reduce the power of glasses.

In general, the power of glasses should match the actual power. If the power of glasses is insufficient, it may cause the ciliary muscles to remain in a state of spasm and affect the effect of vision correction. However, for elderly patients, their eyes may not be able to adapt to the high power, so consider reducing the power of glasses to reduce discomfort. At the same time, if wearing normal glasses will cause dizziness, headache and other discomfort, it is also necessary to consider reducing the power.