Certified Ophthalmic Assistant (Coa) Final Exam With Verified Answers

CERTIFIED OPHTHALMIC ASSISTANT (COA) FINAL EXAM WITH VERIFIED ANSWERS How are systemic medications administered? - CORRECT ANSWER -Orally, injection (subcutaneously or intramuscularly) or intravenously How should drops be properly instilled into a patient's eye? - CORRECT ANSWER -Into the lower cul de sac (lower fornix) What does the term idiosyncrasy refer to with ophthalmic drugs? - CORRECT ANSWER -A bizarre, peculiar reaction to a drug that is not commonly seen, such as tremors, excitability or even collapse What is the name of the instrument used to neutralize lenses? - CORRECT ANSWER -Lensometer (Lensmeter) When recording a prism in a spectacle prescription, what does the abbreviation BO stand for? - CORRECT ANSWER -Base out What is determined by focusing the thin lines in a manual lensometer? - CORRECT ANSWER -The sphere of the spectacle prescription What is the first step in performing lensometry? - CORRECT ANSWER -Focus the eyepiece When PRK is being performed, time remaining in the procedure should be announced in increments of ______ - CORRECT ANSWER -10 seconds Name the organism that is most destructive to the eye. - CORRECT ANSWER -Pseudomonas Aeruginosa What procedure using an Argon Laser is thought to destroy areas of ischemic retina? - CORRECT ANSWER -Panretinal photocoagulation or panretinal laser What type of intraocular injection is made at the Pars plana site with a needle and syringe of medication? - CORRECT ANSWER -Intravitreal injection What are the parallel movements of the eyes from one gaze position to another - CORRECT ANSWER Versions What is the movement of one eye called - CORRECT ANSWER -Duction Versions and ductions are tested by using ________ to test the six pairs of _______ muscles. - CORRECT ANSWER -Six Cardinal positions, yoke The movement of the eye outward toward the temple is called _____ - CORRECT ANSWER -Abduction What is the technique used to measure the radius of curvature of the anterior corneal surface? - CORRECT ANSWER -A-Scan Keratometry Length Measurements Keratometry is performed with a device called a ______ - CORRECT ANSWER -Keratometer or ophthalmometer Give three examples in which a Keratometry measurement would be useful. - CORRECT ANSWER Contact lens fitting, refractive surgery, intraocular lens calculations, keratoconus Keratometry is measured in _____ - CORRECT ANSWER -Diopters