Is optometry expensive in the hospital? how much is it?

20 yuan in our hospital, including computer optometry and lens insertion, requires 10 mydriatic medicine for mydriatic optometry. It doesn't matter whether you have glasses after the exam.

I am an ophthalmologist, and I feel that optometry in the hospital is still different from that outside. Optical shops only sell glasses for the purpose (some hospitals have outsourced optometry, too), which is often overkill and not good for patients.