young man with glasses suffering from eyestrain reading a book having vision problems

20s adult amblyopia asthenopia astigmatism background bad blurred book caucasian degeneration diabetic distress dizziness dizzy eye eyesight eyestrain fatigue feeling frustration fuzzy glasses glaucoma guy health ill loss macular male man misunderstand optometry people person presbyopia presbyopic pressure problem problems reading story strain stress student teenager tension vision white young