I really don't know if I am a college major. Maybe the ophthalmology of medical university has something to do with it. But it is really unclear how those optometrists in Maochang optical shop went to college.

As for the qualification certificate, I know it. The professional qualification certificate of optometrist issued by the State Labor Bureau is 1 ***5. You can consult the local labor bureau for inspection. This is a nationally recognized qualification certificate.