amblyopia
astigmatism
bad
blurred
closeup
correction
cube
defect
diagnosis
diopters
disease
eye
eyeball
eyesight
focus
health
healthy
hyperopia
letter
looking
medical
medicine
myopia
nearsighted
nearsightedness
ophthalmology
optic
optical
optometrist
optometry
problem
read
see
shortsighted
sight
spectacles
test
view
vision