Hey, its a good choice to get glasses. They arent that expensive ysally between 700 and 1400..depending on the frame you pick..they really are worth it...i am on my pc a lot and been using tbem for more than 3 years i have no eyesight problems but they really help me to work longer with out my eyes getting tierd..you should defnatly gettem. If you xant affordem or cant getem now..try to use blue light filter applications and to avoid eye strain look at sth 20 feet away for 20 seconds every hour..this is so your eye muscles donf get stuck in one postion for too long.