astigmatism
background
care
chart
check
checking
container
copy
correction
defect
diagnostic
different
diopter
doctor
equipment
examination
eye
flat
frame
glasses
health
hospital
lay
lens
lenses
many
medical
myopia
object
ophthalmologist
ophthalmology
optical
optician
optometry
optotype
paper
professional
sight
space
specialist
spectacles
test
text
tools
top
trial
tweezers
view
vision
white