astigmatism
background
blue
care
chart
check
container
copy
correction
defect
diagnostic
different
diopter
doctor
equipment
examination
eye
flat
frame
glasses
head
health
hospital
lay
lens
lenses
light
many
medical
mirror
myopia
object
ophthalmologist
ophthalmology
optical
optician
paper
professional
reflector
sight
space
specialist
test
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tools
top
trial
tweezers
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vision