Optometry is comparable to the focusing of a camera, adjusted to the sharpest state, is a purely optical problem.
But in China many hospitals are doctors optometry, in fact, is not the counterpart of the doctor is not proficient in optical problems. It is the optometrists who are really well versed in optical problems and who have learned y about optometry.
There is a specialized discipline of optometry called ophthalmoscopy, and the people who come out of this specialty are really proficient in optometry, and they can hope to qualify as real optometric technicians.
Optometry technology level grading is as follows, five / primary optometrists → four / intermediate optometrists → three / senior optometrists → two / technician → one / senior technician