young man student, fixing glasses, trying to read a book, poor sight farsightedness, myopia. teenage reader eyes problem,

adolescence background book boy casual caucasian closeup concentration concept confused disease disorder eye eyeglasses eyesight eyewear farsightedness fixing glasses glaucoma hand health holding home human learning lifestyle literature looking medical myopia opened ophthalmology optic optical person poor problem reader reading serious shirt sight student teenager textbook verify vision visual young