I will say that by not wearing her glasses her eyes will get more weak. I will the advantages of wearing it. And that you will look pretty in glasses. And also by not wearing you are affecting your studies. And if you don't wear them regularly your eyesight will get very weak. And if you don't wear your glasse after sometime your eyes will start paining and maybe your head will also start aching.
What do you mean by " I will be advantages of wearing it" ?