I Hurt My Left Eye A Year Ago, Since Then

I hurt my left eye a year ago, since then I have been straining when using anything with light for example TV, computer and phone. And that leads to pain in my left eye or even headache. I can read everything from a distance whether near or far. The problem comes when I am using the computer (which is a daily activity because at work we ave to use ).
Recently I went to measure my eyesight and was told that it was +.75 for the left eye and +1 for the right eye and the doctor recommended glasses.
My question is do I need glasses? and what is the normal eyesight for everyone? will the glasses make my eyesight worse and make me depend on them? is the right eye okay?
Too many questions but I have to confirm before I take my glasses.
Kindly answer