diverging meniscus
achromatic lens
astigmatic lens
burning glass
camera
coated lens
concave lens
concavo-convex lens
condenser
convex lens
crescent
crescent moon
eyeglass
eyepiece
glass
half-moon
hand lens
horseshoe
lens
lunula
lunule
magnifier
magnifying glass
object glass
objective
objective prism
ocular
prism
reader
reading glass
scythe
semicircle
sickle
telephoto lens
toric lens
varifocal lens
zoom lens
menisci
cartilage
gristle
lens system
lense
surface
achromatic
aspherical
auto-focus
dagger-shaped
dose-related
double-sided
eye-like
fisheye
hydrogel
non-cpu
pupilless
skeleton-like
soft-focus
ten-power
thin-bladed
unstreamlined