aid
background
blue
care
check
checking
clean
clear
close
closeup
contact
correct
correction
defect
disposable
eyes
eyesight
farsightedness
finger
focus
glasses
hand
hold
isolated
lens
lense
letters
myopia
objects
one
ophthalmologist
ophthalmology
optical
optician
optics
optometrist
portable
see
sight
skin
table
transparent
up
vision
visual
white