some more details are required....
1.your age
2.power of glasses advised
3.vision if recorded on your prescription for glasses
4.since when are you using glasses?
Hi,Ray,
Thanks for query,
You mean numbered glass to wear ?
If you have numbered glasses you should wear for whole day.
Occasional use of glasses will increase your number.
So it is for constant use.
Ok and bye.
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How Long Should I Wear Glasses ?
some more details are required.... 1.your age 2.power of glasses advised 3.vision if recorded on your prescription for glasses 4.since when are you using glasses?