Hi ! To know if your refractive error has changed you will have to visit an Ophthalmologist . That is a possibility . However, most likely your headache is due to mobile overuse . U may try the following
Take regular shut eye breaks say every half an hour of studying
Follow the 20-20-20 rule .
Start using a lubricant eye drop
Check if u have antiglare coating on your glasses
Stay hydrated . Have lots of water
Avoid direct exposure to air conditioner or fan air.
Take care
Answered2020-09-13 02:27:10
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