Chinese people who look at the homepage of China-Eyecare will prefer their own language. They will not look at the English site. That is good for this homepage. Chinese people will ascertain: this can not be an origin Chinese homepage. But if the homepage would be more interesting by different advertising - then Chinese people also might have a look at it. So if the homepage is present for advertising not only for eye care why not use it for advertising on other medical matters? There is a very interesting German clinic for Kieferchirurgie - why should it not have an ad on this homepage?
Of course, implantology or - in German - Implantologie - of teeth is really another field of medical help. Implantology or Implantologie of eyes today is still impossible. There are parts of an eye which can be implanted such as the cornea. It might help in some special diseases especially of elder people. Other surgical methods can help if it is necessary to restore a face after a fatal accident.