optician         
noun [ C ] UK uk/ɒpˈtɪʃ.ən/ us/ɑːpˈtɪʃ.ən/
 (UK also ophthalmic optician); (US optometrist)验光师;配镜师 
someone whose job is examining people's eyes and selling glasses or contact lenses to correct sight problems
 Compare: ophthalmologist
  US (UK dispensing optician)眼镜销售员 
a person whose job is fitting and selling glasses and contact lenses to correct sight problems, but who does not examine people's eyes
 - More examples
 - You really ought to see an optician.
 - Her youngest daughter is an optician.