optometrist specialist doctor smiling happy looking through optometric hospital device and checking eyes having sight exam in

care check clinic clinical correction corrective device diagnosis doctor equipment exam eyeglasses eyes eyesight gear glasses happy head health healthcare hospital instrument isolated lens machine man medical medicine oculist ophthalmic ophthalmologic ophthalmologist ophthalmology optic optician optometric optometrist optometry patient phoropter retina sight smiling specialist test vision visual young