aid
background
blue
blurred
care
chart
clean
clear
close
contact
correct
correction
defect
disposable
eye
eyes
eyesight
farsightedness
female
finger
focus
glasses
hand
hold
holding
lens
lense
lenses
macro
myopia
objects
one
opthalmology
optical
optician
optics
optometrist
portable
see
seeing
shown
sight
skin
snellen
test
transparent
up
vision
visual
white