COA Study Guide Questions With All Correct Answers!!

Name the nine components of the ophthalmic history. - Answer-Chief complaint, present illness, past ocular history, ocular medications, general medical and surgical history, systemic medications, allergies, social history, and family history. Why is it important to specifically ask a patient about the medications they are taking? - AnswerBecause certain medications may affect the eyes. What is the proper response to a patient's request from the ophthalmic technician for medical advice or a diagnosis? - Answer-Refer the patient to the ophthalmologist What is the term used for the reason for the patient's visit? - Answer-Chief complaint What elements are important in social history taking? - Answer-Smoking, alcohol, and drug use Prior use of topical ocular pharmaceutical agents is part of a patient's ________. - Answer-Past ocular history Pertinent family history of a patient should include which relatives? - Answer-Parents, grandparents, and genetic siblings A patient describing an experience of getting hives after taking sulfa drugs is providing information about __________. - Answer-An allergic reaction What is the term for the spasmodic, rhythmic dilating, and contracting pupillary movements during pupil function testing? - Answer-Hippus What is the name of the test used for detecting a relative afferent pupillary defect? - AnswerSwinging flashlight test Which muscle of the iris constricts in bright light? - Answer-Sphincter What is pupil dilation termed? - Answer-MydriasisWhat is the term used when there is a difference in pupil size? - Answer-Anisocoria What is pupillometry? - Answer-The measurement of pupillary diameters. What is the name of the reflexive reaction that occurs when a light is directed into one pupil and the pupil of the opposite eye simultaneously reacts - Answer-Consensual pupillary reaction Calibration of the applanation tonometer should be checked approximately every _____ months. - Answer-Two (or sooner with regular use) When cleaning the goniolens, what is uses to rinse off the methycellulose? - Answer-Warm running water When replacing a light bulb _____ can diminish its effectiveness and life. - Answer-Oil from fingers Diagnostic lenses that contact the eye can be sterilized using? - Answer-Ethylene Oxide gas How should the removable glass slides inside the American Optical acuity projector be cleaned? - Answer-Wipe with clean, soft lint-free towel or photographic lens paper If dust accumulates on the mirror of the slit lamp, the technician may clean it by using what cleaning methods? - Answer-A lint-free cloth, a lens brush, or a blast of air Who should repair and maintain equipment such as a laser? - Answer-A qualified service technician. Which accessories are used to check the calibration of an ophthalmometer/keratometer? - AnswerThree test balls made of steel also called "Lensco Meter" What should be used to clean the accessible lenses of a phoropter? - Answer-Photographic lens cleaner and lens tissue What size letters (optotypes) are typically used to calibrate visual acuity projectors? - Answer-20/200What is the name of the instrument used to neutralize lenses? - Answer-Lensometer (Lensmeter) When recording prism in a spectacle Rx, what does the abbreviation BO stand for? - Answer-Base out What is determined by focusing the thin lines in a manual lensometer? - Answer-The sphere of the spectacle Rx is determined by the thin lines. What is the first step in performing lensometry? - Answer-Focus the eyepiece. If you cannot center the thick and thin lines in the lensometer, the lens has _______. - AnswerGround-in prism. Each black ring seen in the lensometer eyepiece reticle measures how much prism? - Answer-1 diopter for each ring When performing lensometry, what is indicated if both thin and wide lines are in focus at the same time? - Answer-The lens is spherical. What is the technique used to measure the radius of curvature of the anterior corneal surface? - Answer-A-Scan Keratometry Length Measurements Keratometry is performed with a device called a ______. - Answer-Keratometer or ophthalmometer Give three examples in which a keratometry measurement would be useful. - Answer-Contact lens fitting, refractive surgery, intra ocular lens calculations, keratoconus Keratometry is measured in _______. - Answer-Diopters An unfocused eyepiece can lead to an error of _______. - Answer-1 diopter in the K reading How many meridians are measured in keratometry? - Answer-2 meridians (usually 90 degrees apart)The average K reading is _____. - Answer-43 to 44 diopters Keratometry measures the _______ of the anterior curvature of the cornea. - Answer-Central 3.3 mm The diffusion of oxygen through a contact lens material is referred to as _______. - Answer-DK value True or false: The application and evaluation of diagnostic lens on the eye is the best way to fit a contact lens. - Answer-True