Certified Ophthalmic Assistant Exam Questions with 100% Correct Answers | Verified | Updated 2024

Certified Ophthalmic Assistant Exam Questions with 100% Correct Answers | Verified | Updated 2024 How are systemic medications administered? - answerOrally, injection (subcutaneously or intramuscularly) or intravenously How should drops be properly instilled into a patient's eye? - answerInto the lower cul de sac (lower fornix) What does the term idiosyncrasy refer to with ophthalmic drugs? - answerA 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? - answerLensometer (Lensmeter) When recording a prism in a spectacle prescription, what does the abbreviation BO stand for? - answerBase out What is determined by focusing the thin lines in a manual lensometer? - answerThe sphere of the spectacle prescription What is the first step in performing lensometry? - answerFocus the eyepiece When PRK is being performed, time remaining in the procedure should be announced in increments of ______ - answer10 seconds Name the organism that is most destructive to the eye. - answerPseudomonas Aeruginosa What procedure using an Argon Laser is thought to destroy areas of ischemic retina? - answerPanretinal photocoagulation or panretinal laser What type of intraocular injection is made at the Pars plana site with a needle and syringe of medication? - answerIntravitreal injection What are the parallel movements of the eyes from one gaze position to another - answerVersions What is the movement of one eye called - answerDuction Versions and ductions are tested by using ________ to test the six pairs of _______ muscles. - answerSix Cardinal positions, yoke The movement of the eye outward toward the temple is called _____ - answerAbduction What is the technique used to measure the radius of curvature of the anterior corneal surface? - answerA-Scan Keratometry Length Measurements Keratometry is performed with a device called a ______ - answerKeratometer or ophthalmometer Give three examples in which a Keratometry measurement would be useful. - answerContact lens fitting, refractive surgery, intraocular lens calculations, keratoconus Keratometry is measured in _____ - answerDiopters Measuring intraocular pressure is also called _____ - answerTonometry The higher the intraocular pressure of an eye, the ____ the eye - answerHarder Applanation tonometry displaces less than ____ of aqueous. - answer0.5 microliters When recording intraocular pressure, the reading on the Goldmann applanation tonometer scale should be multiplied by ____. - answer10 Because there are no rods or cones in the optic nerve head a____ blind spot is created in the normal visual field. - answerPhysiologic A defect in the patient's superior temporal retina, will affect the patient's ____ field of vision. - answerInferior nasal The two basic methods employed to map the field of vision are ____ and ____ perimetry. - answerKinetic, static A localized area of reduced sensitivity in a visual field that is surrounded by an area of greater sensitivity is termed a ____. - answerScotoma And unfocused eyepiece can lead to an error of ____. - answer1 diopter in the K reading How many meridians are measured in keratometry? - answer2 meridians (usually 90° apart) The average K reading is ____. - answer43-44 diopters Keratometry measures the____ of the anterior curvature of the cornea. - answerCentral 3.3 mm The diffusion of oxygen through a contact lens material is referred to as ____. - answerDK value True or False: The application and evaluation of a diagnostic lens on the eye is the best way to fit a contact lens - answerTrue Name the instrument used to determine the posterior surface radius of curvature of a rigid contact lens. - answerRadiuscope and or Contacto Gauge Increased thirst, excessive urine, production, increased hunger and weight loss are characteristics of which endocrine disease? - answerDiabetes insipidus What finding can occur 6 to 8 hours af