A woman tries on sunglasses at a glasses expo in Beijing, Sept 9, 2015. [PHOTO PROVIDED TO CHINA DAILY]

Eyewear prices vary greatly－from less than 100 yuan per pair to 100,00 yuan per pair (excluding those using precious metals or gems).

Key determinants of the price are quality, functions of lenses, materials used and brands of frames. Some eyewear may need specialist treatment at the optician's, which means extra charges are possible.

Robert Ng, 43, an optician at a Shanghai store of a Hong Kong-based eyewear chain, said he has observed more consumers are choosing high-end lenses nowadays, and the most popular price range spans from 3,000 yuan to 8,000 yuan.