What are the differences between an optometrist, an ophthalmologist and an optician?

See below: An ophthalmologist is an md (went to medical school) who can treat medical and surgical diseases of the eye, in addition to prescribing glasses/contacts. An optometrists is an od who can prescribe glasses/contact and treat some medical eye conditions (depending on state law), but not do surgery on the eye. An optician (lo) can not treat any eye diseases or prescribe. They can tailor eyeglasses.

Focus and training.: An optician is licensed to sell and make lenses. The optometrist examines eyes for glasses and diseases. Typically four years after college are needed. Ophthalmologists go to medical school, then do four years specialization in eye care which includes surgical training. Subspecialists do additional training after residency in ophthalmology in areas such as oculoplastics, retina, refractive, etc.