opticians is a form of:

Optician



noun
1.
(Maker and seller of eye glasses and other, optical instruments [maker of optical glasses]) អ្នកលក់រឺធ្វើវ៉ែនតា (អ្នកទស្សនភណ្ឌ)
ENGLISH MEANING
adjective
1.
One skilled in optics.
2.
One who deals in optical glasses and instruments.