air
breathe
care
check
clean
cleaner
contact
container
correction
dirty
drop
dust
eye
eyeball
eyedropper
eyes
eyesight
filter
glasses
hand
hands
health
healthcare
human
icon
instruction
lens
lenses
line
lined
liquid
magnifying
medical
medicine
optical
optometrist
optometry
outline
protection
ray
refill
rubbing
set
sight
stroke
symbol
thin
time
vision