Questions and Answers
optometrist - answer-Prescribes and/or fits eyeglasses and contact lenses, screens
for eye diseases and is not a medical doctor
Ophthalmologist - answer-Prevents, diagnoses, medically and surgically treats
problems of the eye and is a medical doctor.
Ocularist - answer-Measures and fits patients with artificial eye.
Orthoptist - answer-Helps with diagnosis, management, and no surgical treatment of
eye muscle imbalance.
Ophthalmic Medical Assistant - answer-Helps the doctor in a variety of clinical and
administrative tasks.
Optician - answer-Dispenses eyeglasses and contact lenses from prescription
supplied by others.
Levels of Certification - answer-COA: Certified Ophthalmic Assistant, COT: Certified
Ophthalmic Technician, COMT: Certified Ophthalmic Technologist.
Cornea - answer-The clear membrane of the front of the globe that begins the
process of focusing light the eye receives
Pupil - answer-The opening in the center of the iris that enlarges or dilates and
reduces or restricts.
Iris - answer-The colored circle of tissue that controls the amount of light entering the
eye by enlarging or reducing the size of its aperture, the pupil
Lens - answer-Part of the optical focusing system of the eye, immediately behind the
iris.
Vitreous - answer-The clear jelly like substance that fills the space behind the lens.
Retina - answer-The inner lining of the posterior segment of the eyeball, consists of a
layer of light sensitive cells that convert images from the optical system into electric
impulses sent along the optic nerve for transmission to the brain.
Optic Nerve - answer-The nerve that carries electric impulses to the brains visual
cortex where they are integrated to produce the sensation of light.
Sclera - answer-The outer fibrous tissue of the globe, which surrounds the cornea
and forms the wall of the eye; protects intraocular contents.