IJCAHPO Certified Ophthalmic Assistant (COA) Practice Exam

These questions are part of the practice quiz. Start practicing

• What is the most widely used method of visual field screening that requires no special equipment?
• Where is the focal point for distant objects located in an unaccommodated emmetropic eye?
• What is the recommended distance used for assessing distance acuity?
• What does BID stand for in medical terms?
• What is a primary indicator of a successful B-scan ultrasound?
• What condition does an iridotomy treat?
• What is the most common indication for using toric lenses?
• What drug is commonly used for applanation tonometry?
• What is the condition where the eyelashes roll in and rub against the cornea?
• Which of the following conditions is not hereditary?
• What is the purpose of keratometry?
• What is an important step when changing the lamp of a projector?
• What is the spherical equivalent of +2.00 +5.00 X 180?
• Which two items are used to clean the retinoscopy lens, polarizing lens, red lens, and Maddox rod lens?
• What is necessary for a patient to fulfill informed consent?
• Which term refers to the cleaning process of surgical instruments?
• Which of the following is the correct direction for aqueous humor flow?
• Which medication is specifically indicated for lowering intraocular pressure in glaucoma?
• What is the thickest corneal layer?
• Which of the following is NOT a type of ophthalmic imaging?
• What is the primary responsibility of allied ophthalmic personnel?
• Which of the following is NOT a responsibility of allied ophthalmic personnel?
• Where is the center of focus on a posterior pole photograph located?
• What is the primary use of A-scan biometry?
• Which of the following statements is true about office efficiency?
• What fills the space between the cornea and the iris?
• Which test compares the direct and consensual responses to the pupil?
• What is the role of the visual axis in A-scan biometry?
• What is the name of the drug that treats glaucoma by decreasing aqueous humor production?
• Which age group typically require vision screenings for early detection of vision problems?
• What is the appropriate tool for examining the retina directly?
• What is the key purpose of cleaning surgical instruments before sterilization?
• Which structure in the eye is responsible for color vision?
• What is the key factor affecting the overall rating of a practitioner?
• Which eye drop inactivates the sphincter muscle of the iris?
• What device is used to view a virus?
• What is the term for the condition where the eyelid turns outward leaving the inner eyelid surface prone to irritation?
• What ocular condition is most commonly associated with diabetes?
• Which statement is true pertaining to the use of plain catgut sutures?
• What is the most prevalent cell type in a scraping from allergic conjunctivitis?
• What is the significance of the base curve in contact lens fitting?
• What is the term for the reading portion of a bifocal prescription?
• Informed consent requires that a patient has what kind of capability?
• What type of vision do rods contribute to?
• Which extraocular muscle is primarily responsible for depression of the eye?
• Which statement is true regarding universal precautions?
• Which condition may benefit from probing of the tear duct?
• What is the primary material used in rigid gas permeable contact lenses?
• In order to measure pupillary distance accurately, which tool is typically used?
• What is the term for an eye that contains an intraocular lens after cataract surgery?
• How many layers comprise the tear layer?
• What phase is first seen in fluorescein angiography?
• Visual field loss due to optic nerve cupping is primarily related to which condition?
• Which of the following conditions is characterized by increased intraocular pressure?
• Which instrument is used to measure intraocular pressure?
• Which component is primarily assessed in a Schirmer test?
• Which muscle is responsible for adducting the eye?
• What is an important difference between soft and rigid contact lenses?
• Which test uses prisms to center the corneal reflex?
• What is the name of the eyelid glands that secrete oil?
• How are axial length measurements obtained in ultrasound?
• Which measurement provides the axial length of the globe in A-scan biometry?
• What is the term for the bending of light?
• What is the diameter of the contact area of the applanation tonometer?
• What statement is true regarding the Snellen chart?
• Ophthalmologists are responsible for ensuring patients understand which aspect of their care?
• What type of deposits are soft contact lenses most susceptible to?
• Which item is not a designation of a version?
• What critical information must ophthalmologists convey to their patients?
• What is the collective name for the iris, ciliary body, and choroid?
• Glaucoma primarily affects which ocular structure?
• What part of the spectacle frame connects the two lenses?
• In what order should items on the instrument stand be arranged?
• What instrument is primarily used to measure intraocular pressure?
• Which of the following side effects would you not expect from carbonic anhydrase inhibitors?
• Which part of the eye is primarily responsible for focusing light?
• What test measures tear flow?
• By how many degrees does the axis change during transposition?
• What is a key element that enables patients to exercise informed consent?
• What is the term for the concentration of a chemical in a pharmaceutical solution?
• Which is the term for the 'degerning' of the hands?
• What is the primary function of the precorneal tear film?
• Which tool is used to assess phorias and consists of a series of red cylinders?
• What does the term tonicity refer to in pharmacology?
• In what condition is a potential acuity meter a useful test?
• What characteristic is essential for the proper fitting of contact lenses?
• What does the numerator represent in the 20/20 notation?
• Which color vision test is a pseudoisochromatic test?
• What is the proper technique to assist a visually impaired patient?
• What is the term for pupils that are of unequal size?
• What is the name of the visual receptors that are responsible for processing color?
• What is a possible side effect of long-term systemic steroids?
• How should contact lenses be stored when not in use?
• What is the term for a scotoma that is located immediately nasal or temporal to fixation?
• Which metal is used for surgical instruments that helps prevent rust and corrosion?
• Which of the following most qualifies as a chief complaint?
• What is a common allergic response seen in allergic conjunctivitis?
• What is the name of the condition where the eye does not refract light equally in all directions?
• At what age should you expect an infant to start reaching for toys?
• What type of perimetry technique involves a moving target?
• In retinoscopy, which refractive error is most commonly observed with a "with" reflex when starting with plano at 66 cm?
• To prevent eye strain, how often should a person take breaks from screens?
• What is typically the first choice for screening intraocular pressure?
• What test uses a screen that is half red and half green and is used during refinement?
• What is the term for the distance from the anterior surface of the eye to the back surface of the spectacle?
• Which term describes pupillary constriction?
• For effective informed consent, patients must be able to do what?
• Which of the following symptoms requires prompt attention?
• What is the term for an area of complete or partial blindness in an otherwise normal visual field?
• Which of the following instruments provides a two-dimensional view of the retina?
• What kind of examination involves using a slit lamp?
• What is the purpose of dilating the eye during an examination?
• What delivery mechanism do oral medications utilize?
• On the back of spectacle frames, what do the figures such as 46x22 represent?
• How many dimensions are depicted in a B-scan image?
• The cones of the human eye are sensitive to which colors?
• What does retroillumination in eye examination primarily detect?
• What is the name of the instrument used to measure the thickness of the cornea?
• Which factor can negatively affect the accuracy of ultrasound biometry?
• What is the main function of the retina?
• What is the primary action of mydriatic drugs?
• Which test is used to assess stereoepisis?
• How is calibration of the applanation tonometer checked?
• What is the standard abbreviation for gram?
• Which common familial ocular disorder should you record during a patient's history?
• Which statement is true regarding the routine maintenance of a phoropter?
• The calibration of the Goldmann applanation tonometer should be checked at which settings?
• Which eye care professional specializes in ocular ultrasound examinations?
• What is a common symptom of glaucoma?
• What instrument measures the curvature of the central part of the cornea?
• Which statement is true regarding documenting the patient's complaints?
• Ophthalmic equipment or devices that come in contact with only a patient's intact skin should undergo which procedure?
• Which eye condition is characterized by two clinical types, wet or dry?
• What condition describes if the amount of light information transmitted to the brain from one eye differs from that of the other eye?
• What visual condition might require the use of prism correction in spectacles?
• Which term best describes retinoscopy as part of the refraction process?
• Which surgical instrument is used to enlarge the punctum?
• What is the primary function of the cornea?
• Where is the second point of attachment for the zonular fibers?
• What is the purpose of using an autorefractor in an eye exam?
• What type of illumination should be used for photographing external eye structures?
• What type of lens is prescribed for a patient with myopia?
• Which value indicates the permeability of a contact lens?
• Which body part should soap and water drip down while performing a surgical scrub?
• What can a slit lamp examine?
• Advances in digital imaging technology facilitated the practical use of which type of dye?
• What is the source used to obtain an Optical Coherence Tomography image?
• Which instrument is typically used in chalazion surgery?
• What procedure is intended to restore the function of a blocked tear duct?
• What does the term "exophoria" refer to in eye alignment?
• Which ocular tissue produces A-scan spikes?
• Which of the following is a method to test for color vision deficiency?
• What does a higher intraocular pressure indicate in patients?
• What is the term for the distance between the optical centers of a pair of glasses?
• Which surgical procedure may involve the removal of a chalazion?
• What can occur if the optical centers of spectacles are not aligned with the patient's pupillary distance?
• What type of patients uniformly require a threshold 24-degree central field test?
• What is the main purpose of the retina?
• Which of the following would ruin an amorphic environment in the operating room?
• What is essential for successful communication between an ophthalmologist and a patient regarding treatment?
• What is the term that describes an uncorrected refractive error?
• Which type of lens is designed to correct astigmatism?
• What component of a bifocal lens helps with distance vision?
• What is a disadvantage of a chemical-based rigid contact lens care system?
• Which term describes the understanding and acceptance of medical risks and benefits by a patient?
• Which process allows a patient to make an informed and voluntary decision regarding their healthcare?
• What is the purpose of testing visual acuity?
• How many extraocular muscles are responsible for moving each eye?
• What measures the dioptric power of the cornea?
• What is the best term to describe a patient's active role in understanding the medical procedure they will undergo?
• Which type of instrument is typically utilized for grasping tissue during surgery?
• What visual acuity reading would indicate that a patient can see at 20 feet what a normal eye sees at 40 feet?
• Which medical professional specializes in advanced ophthalmic skills?
• What condition occurs when parallel rays of light focus at a point just in front of the retina in an unaccommodated eye?
• What is the name of the technique that uses a puff of air to measure intraocular pressure?
• Which anatomical structure is correlated with the physiological blind spot?
• How would you expect the mires to appear if you instill too much fluorescein prior to Goldmann tonometry?
• How many inches from the eye should near vision charts be held?
• What is the second step in preparing absorbable sutures before loading on a needle holder?
• What is the most common technique used to perform B-scan ultrasound?
• What is the main purpose of wearing impact-resistant eyewear in an industrial setting?
• What is the site of the crossover of nerve fibers from each eye to the opposite side?
• If a person can clearly see an object at 20 feet that would normally be seen at 60 feet by a person with no refractive error, what is their visual acuity?
• What is the first step if your patient is unable to read the largest letter on the Snellen chart?
• In glare testing, how many controlled degrees of light does the BAT test deliver when viewing a Snellen target?
• What kind of astigmatism is characterized by greater power in the vertical meridian than in the horizontal meridian?
• Corneal curvature measurement is vital in determining which parameter when fitting a contact lens?
• What is the term for a lens consisting of two cylinders of equal but opposite powers?
• What is the name for a granulated inflammation of the eyelid that may require surgical excision if it does not subside?
• In what condition will the patient describe symptoms of a red and irritated eye?
• Which of the following tests would improve visual acuity for a patient with an uncorrected refractive error?
• What is the role of the dilator iris muscle?
• Which drug is commonly used to treat acute allergic reactions?
• What should be used to periodically dust the exposed lens surface of an eyepiece?
• What is the term for drooping upper eyelids?
• Which of the following statements is incorrect regarding the Maddox rod test?
• During which examination would you primarily assess visual acuity?
• What is an important question to ask a patient that complains of "red eye"?
• What technique is used to evaluate the anterior segment with a bright beam of light?
• What is the term that describes an echo from a sound wave traveling from one medium into another?
• Which process is useful for measuring corneal astigmatism?
• Which ocular muscle is responsible for elevating the eyelid?
• Which vitamin is critical for good vision, particularly in low light conditions?
• What is a visual field test used to assess?
• What is the power of a lens that has a focal length of 2 meters?
• Which two types of bridges are commonly found on a spectacle frame?
• A fluorescein angiogram is primarily used for what purpose?
• What is one advantage of using progressive lenses over bifocals?
• Which type of glaucoma is symptomless?
• What is the minus cylinder form of -2.50 +1.00 X 175?
• Which drug is a powerful mydriatic and cycloplegic that can take up to two weeks to wear off?
• Which ocular structure is represented between A-scan spikes A and B?
• What type of tonometry requires the application of a local anesthetic?
• What term describes the condition where there is a clouding of the lens of the eye?
• Which measurement is primarily used to determine legal blindness?
• Which of the following is a primary goal of the precorneal tear film?
• What common medium is used to culture microorganisms?
• What is the name for the small yellowish lesions located between the retinal pigment epithelium and Bruch's membrane?
• Which consensual response normally occurs when shining a light in the right eye?
• How many nerves innervate the six extraocular muscles?
• The area between the two focal points of a spherocylindrical lens is called the conoid of?
• What should precede the sterilization of minor surgical instruments?
• Which instrument is traditionally used for measuring intraocular pressure?
• Which structure in the eye contains no blood vessels and is critical for vision clarity?
• What term describes an eye that tends to turn upwards?
• Which part of the eye constricts in bright light?
• The Amsler grid is designed to evaluate visual field deficiencies in how many degrees of central vision?
• Which test measures the alignment of the eyes by comparing them with a red light source?
• What symptom is typically associated with epiphora?
• Which type of tonometer is mounted on a slit lamp?
• What is the term for the tonometry technique that displaces a minimal amount of fluid?
• What happens if the glasses are not positioned so that the patient looks through the optical centers?
• What is the most common way to record visual acuity in infants and preverbal children?
• What color corresponds to a Gram-positive reading?
• In what unit is keratometry expressed?
• Which medication is known to have possible respiratory side effects?
• After introductions to the patient, what is one of the first items that should be obtained as part of history taking?
• Drugs that dilate the pupil without cycloplegia operate by stimulating which iris muscle?
• In retinoscopy, which error requires the use of a negative corrective lens?
• The precorneal tear film is crucial for maintaining which of the following?
• What color is the light filter used in applanation tonometry?
• Which eye condition can a keratometer help diagnose?
• What is the name when blood partially fills the anterior chamber?
• Which instrument is used to measure the power of spectacle lenses?
• What is the name of the triangular corners where the upper and lower lids meet?
• Which ocular_structure is usually the starting point in measuring axial length with A-scan?
• What is the name for the fibrovascular growth that invades the cornea and originates in the conjunctiva?
• What alignment is required for obtaining ultrasound biometric measurements?
• What is the cycloplegic agent ideal for office use primarily for its dilating ability?
• What class of drugs is known to dilate the pupil?