CERTIFIED OPHTHALMIC MEDICAL TECHNOLOGIST
(COMT) EXAM 2024 WITH 100% ACCURATE ANSWERS
What are the three levels certified ophthalmic medical assisting? - correct answer✔✔ Certified ophthalmic assistant (COA), Certified ophthalmic technician (COT), Certified ophthalmic medical technologist (COMT) What is an orthoptist? - correct answer✔✔ Helps with diagnosis, management and non-surgical treatment of eye muscle imbalance What is an Optometrist? - correct answer✔✔ Prescribes and fits eyeglasses and contact lens, screens for eye diseases and is NOT a medical doctor What is an optician? - correct answer✔✔ Dispenses eyeglasses and contact lenses from prescription supplied by others What are the six extraocular muscles & their functions? - correct answer✔✔ medial rectus - inward rotation, inferior rectus - downward rotation, lateral rectus - outward rotation, superior rectus - upward rotation, superior oblique - incyclotorsion (down/inward), inferior oblique - excylptorsion (up/outward) What does strabismus mean? - correct answer✔✔ Misalignment of the eyes that causes vision to be disturbed. Happens when extraocular muscles do not work in a coordinated manner.What is ptosis? - correct answer✔✔ drooping of the upper eyelid 1 / 4
What is the fovea? - correct answer✔✔ Center part of macula that has ONLY cones What are floaters? - correct answer✔✔ Small particles of dead cells and other debris in vitreous and collagen fibers from vitreous degeneration. Experienced by patients as spots or cobwebs What are the 2 types of photoreceptor cells & what are their functions? - correct answer✔✔ Rods —> "night vision" & peripheral Cons —> sharp central vision & perception of color What is the vitreous? - correct answer✔✔ Clear jelly-like substance that fills the intra-ocular cavity behind the lens Describe how the eye converts light rays to a perceived image - correct answer✔✔ Light rays reflected from an object are focused by the cornea and lens to produce an upside down image on the light- sensitive retina. The retina converts the image to electrical impulses which are carried by the optic nerve to the brain's visual cortex where they produce sensation of light Name 4 structures in the adnexa - correct answer✔✔ The orbit, extraocular muscles, eyelids, lacrimal apparatus Name three functions of the eyelids - correct answer✔✔ Protect eye from injury, exclude light, aid in lubricating ocular surface Name three layers of the eyelids - correct answer✔✔ Outer layer of skin, middle layer of fibrous tissue and muscles, inner layer of tissue (conjunctiva) What are the two primary functions of the lacrimal apparatus? - correct answer✔✔ To produce and drain tears 2 / 4
What is the relationship between the lacrimal gland, lacrimal sac and nasolacrimal duct? - correct answer✔✔ Tears are produced by the lacrimal gland; tears are collected in the lacrimal sac; tears drain into the nasal cavity by means of the nasolacrimal duct.What is the primary function of the cornea? - correct answer✔✔ To focus light rays reflected to the eye.The cornea makes up 2/3 of the focusing power of the eye.What are the functions of the 5 layers of the cornea? - correct answer✔✔ Endothelium - maintains proper fluid balance.Epithelium - first line of defense against infection and injury.Bowman membrane - acts as an anchor for the epithelium.Descement Membrane & Stroma - rigidity What are Zonules? - correct answer✔✔ Fibers that connect the lens to the ciliary processes.What is the difference between exotropia and exophoria? - correct answer✔✔ Exotropia - eye is obviously turned out.Exophoria - eye turns out intermittently but is straight most of the time What is binocular vision? - correct answer✔✔ The blending of the separate images seen by each eye and into one image What is your conjunctiva? - correct answer✔✔ The thin, translucent mucous membrane extending from the outer corneal border over the globe and the inner surface of the eyelids What are the 4 main types of glaucoma? - correct answer✔✔ - open-angle (or chronic open-angle)
- closed-angle
- secondary (open & closed) 3 / 4
- congenital
- muscle paralysis due to nerve damage
- congenital weakness of one or more extraocular muscles
- / 4
Resulting protrusion of the eyeball when the orbital volume increases is called...... ? - correct answer✔✔ Proptosis or Exophthalmos What alterations in the appearance of the eye or eyelids may be caused by orbital cellulitis? - correct answer✔✔ Grossly swollen eyelids or red eyes What are 3 possible causes of strabismus? - correct answer✔✔ - loss of muscle elasticity from scarring
Define chalazion - correct answer✔✔ Non-tender solid lump under the eyelid Define blepharitis - correct answer✔✔ Red & encrusted eyelid margins Define trichiasis - correct answer✔✔ Eyelash rubbing against the eyeball causing irritation What is lagophthalmos? - correct answer✔✔ inability to close the eyelids completely Define Keratoconjunctivitis sicca & name the usual treatment - correct answer✔✔ Dry eyes Artificial tears in the form of eyedrops Describe what happens when drainage of aqueous humor is hindered and name the resulting pathological condition - correct answer✔✔ Abnormal rise in intraocular pressure with eventual damage to the optic nerve and vision loss. Glaucoma