abstract
background
black
blind
care
chart
check
concept
correction
disease
exam
examination
eye
focus
glass
graphic
health
healthcare
healthy
illness
illustration
impaired
impairment
instrument
isolated
lenses
letter
letters
look
measure
medical
medication
medicine
myopia
ophthalmology
optical
optics
optometrist
optometry
read
reading
see
sight
sign
spectacles
test
view
vision
visual
white