Information about how we protect the public. The College of Opticians of Ontario (COO) regulates the practice of Opticianry in the public interest. The COO is one of 26 self-governing health Colleges established by law. It is not a teaching institution. The COO is dedicated to supporting opticians in their delivery of high quality, safe and ethical care to the public of Ontario. One of the ways of ensuring these high standards of care is by establishing standards and guidelines for opticians. Included here is information explaining the importance of using a Registered (licensed) Optician, how to lay a complaint, finding an optician, a partial list of the risks and problems posed with purchasing eyewear over the Internet, and more.