I would like to know that whether the power is mins or plus and whether it was given for distant vision or near vision.
Minus power is given for myopia
or near sightedness to correct distant vision. Here you need to wear the glass always.
Plus power given for near near vision as in presbyopia
and to correct hypermetropia
or far sightedness.
In hypermetropia you need to wear the glass always.
In presbyopia when you are glass for seeing, you need to wear it for all your near work like reading, writing and while working on computer.
You need to undergo eye power
check up atleast once in a year in all the cases and change the glass if there is any change in the power.