JCAT Certified Ophthalmic Assistant (COA) Practice Test

These questions are part of the practice quiz. Start practicing

• What is essential for proper fitting of contact lenses regarding corneal measurement?
• What is the term for inflammation of the eyelids?
• What condition is characterized by an opaque lens?
• Which test is designed to measure tear flow in patients?
• What does the term "cycloplegia" refer to?
• If a lens has a focal length of 2 meters, what is its power in diopters?
• What does a "swinging flashlight test" help determine?
• What is the primary purpose of retinal photography?
• What is indicated by a difference in the amount of light transmitted to the brain from each eye?
• Which type of eye drop is used to paralyze the sphincter muscle of the iris?
• What is the main purpose of the Amsler grid test?
• What term describes the condition associated with the dilation of the pupils?
• What does the term "myopia" refer to?
• Which term refers to the type of visual field defect caused by interruption of conduction in the optic pathway?
• What does the concept of corneal curvature refer to in contact lens fitting?
• What is the purpose of using the PAM in ophthalmology?
• What is the primary function of the tear film?
• In which part of the eye does the majority of light refraction occur?
• What does the term pupillary distance refer to?
• What are scotomas located immediately nasal or temporal to fixation known as?
• What health professional typically performs the Schirmer test?
• What are the two main types of glaucoma?
• What is a common trigger for allergic conjunctivitis?
• What color is the light filter used in applanation tonometry?
• Which condition may lead to a fixed and dilated pupil?
• What is a notable feature of the Snellen chart?
• Which factor is least likely to contribute to allergic conjunctivitis?
• What does anisocoria describe?
• What class of drugs is typically used to treat acute allergic reactions?
• Which drug is primarily used to treat inflammation rather than for pupil dilation?
• What symptom may indicate acute glaucoma?
• Which condition involves increased intraocular pressure damaging the optic nerve?
• What is the most common way to record visual acuity in infants and pre-verbal children?
• What condition describes the curvature of the lens that does not refract light equally in all directions?
• What does the acronym "OCT" stand for in ophthalmology?
• What is a common complication of cataract surgery?
• During a Schirmer test, what indicates adequate tear production?
• What is a commonly used antibiotic drop for bacterial conjunctivitis?
• What type of lens is used to correct hyperopia?
• In what unit are the results of keratometry typically expressed?
• What is the condition characterized by granulated inflammation of the eyelid that may require surgical removal?
• What instrument is used to measure glasses prescriptions?
• What is the typical width of an adult human eye?
• What is the term for the blurred vision caused by irregularities in the cornea or lens?
• What type of eye drop dilates the pupil without causing cycloplegia?
• What type of refractometry is exemplified by retinoscopy?
• Which part of the eye is primarily responsible for refracting light?
• What term refers to the additional prescription power needed for the reading portion of a bifocal lens?
• Which condition is characterized by sluggish reaction to light and accommodation, typically presenting as unilateral?
• What is the best referral option for a patient experiencing sudden vision loss?
• Which ocular condition involves a "chalazion" or "stye"?
• What is the medical term for "floaters"?
• What is the term for far-sightedness, which is the most common condition related to refractive error?
• What is the primary use of a keratometer?
• Which of the following terms describes the constriction of pupils?
• Which test utilizes a red-green filter to determine if a patient has myopia that is not sufficiently corrected?
• Visual field loss due to optic nerve cupping is primarily related to which condition?
• What does the term "visual acuity" refer to?
• Patient evaluations for scotomas should include which of the following screening tests?
• What is the term for an eye condition where the eyelids do not close completely?
• In addition to itching and tearing, what is another common symptom of allergic conjunctivitis?
• What is used to measure the misalignment of the eyes?
• Which cranial nerve is primarily responsible for controlling eye movements?
• What term describes the difference in visual acuity between the two eyes?
• What types of patients typically require a threshold 24 degree central field test?
• What is the normal range for intraocular pressure (IOP) in adults?
• What does the abbreviation "VA" stand for in ophthalmology?
• What is the primary risk factor for macular degeneration?
• Which tool contains a series of red cylinders used to assess phorias?
• What does dextroversion refer to in terms of eye movement?
• What type of visual aids are typically used for low vision rehabilitation?
• What term is used to describe the degree of astigmatism?
• What does a vision of 20/60 signify?
• What structure within the eye is responsible for color vision?
• In a bifocal lens prescription, what is the purpose of the Addition value?
• What anatomical feature drains aqueous humor from the anterior chamber?
• What is the desired outcome of dilator muscle stimulation by specific eye drops?
• Which part of the eye is responsible for focusing light onto the retina?
• What is Hyperopia more commonly known as?
• Which layer of the tear film is the outermost lipid layer?
• What is the primary goal of identifying allergic conjunctivitis symptoms?
• What is the purpose of a slap test?
• Which of the following terms describes the primary correction power of a prescription lens?
• How is the position of the eye muscles primarily controlled?
• What does the term "paracentral" refer to in the context of visual field testing?
• Which tonometry technique displaces a minimal amount of fluid?
• In visual assessments, what can influence a patient's ability to read from a Snellen chart?
• What does anisometropia refer to?
• What is the purpose of a keratometer?
• What measurement determines the distance between the optical centers of spectacle lenses?
• What is the term used for the de-germing of the hands?
• Which type of perimetry technique involves a moving target?
• What instrument is used to measure the thickness of the cornea and the depth of the anterior chamber?
• Which of the following is a common symptom indicating a need for a vision assessment?
• What type of validation does retinoscopy provide in assessing a patient's vision?
• What is the prismatic effect?
• What does the presence of a "floaters" indicate in an eye examination?
• What defines the secondary power of a lens used specifically to correct astigmatism?
• What colors are the human eye sensitive to?
• What do you call the transparent gel-like substance filling the eyeball?
• Which condition is characterized by eye strain and discomfort?
• What clinical test can be used to determine if there is adequate tear production?
• What is vertex distance in optical terms?
• What is defined as astigmatism where the vertical meridian is steeper than the horizontal meridian?
• Which condition may require surgical intervention if it does not resolve naturally?
• In what part of the eye would you find the fovea?
• How many layers comprise the tear layer?
• What condition is characterized by a "curtain" falling over the field of vision?
• What is the primary function of tear film?
• What are the symptoms of retinal detachment?
• What is the primary function of the retinal pigment epithelium?
• What visual acuity level is generally considered normal?
• How many cranial nerves are responsible for the six extraocular muscles?
• What type of inflammation often affects the eyelid due to blocked glands?
• Which condition is often confused with allergic conjunctivitis due to similar symptoms?
• What surgical procedure is performed to create an opening in the iris?
• What condition is characterized by a clouding of the lens in the eye?
• Which aspect of a lens prescription indicates where the cylinder power is oriented?
• What part of the eye contains the photoreceptor cells?
• Which is the most widely used method of visual field screening that requires no special equipment?
• What term describes a refractive error where the eye does not focus light evenly on the retina?
• What alignment error does the Krimsky Test correct?
• What visual function does confrontation testing primarily assess?
• Which instrument would not be used for measuring intraocular pressure?
• What is a significant risk factor for developing glaucoma?
• What is primarily evaluated using the Duochrome test?
• Which type of eye drop primarily stimulates the dilator muscle to achieve pupil dilation?
• What do the numbers on the back of spectacle frames typically indicate?
• At what age is an infant expected to start reaching for toys?
• What does the term "diplopia" mean?
• What test is used to measure central visual acuity?
• What condition is characterized by clouding of the lens?
• Which test assesses the eye's ability to detect colors?
• What is the primary objective of utilizing a lensmeter?
• How is the Schirmer test typically conducted?
• Which types of eye movements relate to sursumversion and deorsumversion?
• What is the purpose of a visual acuity test?
• What is the role of the aqueous layer in the tear film?
• What is the term for the surgical procedure to correct strabismus?
• What is commonly used to treat allergic conjunctivitis?
• Which of the following best describes the tear production level that would raise concerns for dry eye syndrome?
• Which type of eye drop is commonly used to dilate the pupil during an eye exam?
• When is counting fingers used in vision assessments?
• What powerful mydriatic and cycloplegic can take up to two weeks to wear off?
• What is the primary risk associated with long-term use of corticosteroid eye drops?
• Which condition is indicated by a "cotton wool spot" in a retinal examination?
• What phenomenon describes the bending of light?
• What is the primary function of the cornea?
• What condition does a Maddox rod help to assess?
• Which instrument is used to measure the curvature of the cornea?
• How far in inches should near vision charts be held from a patient's eyes?
• What test measures intraocular pressure?
• What is the term for involuntary rapid eye movements?
• What is the primary purpose of a tonometer?
• Which test compares both direct and consensual pupillary responses?
• The ability to see an object clearly at 20 feet indicates what?
• What does the term "astigmatism" refer to?
• Which cycloplegic is considered ideal for office use due to its weaker effects?
• Which symptom is NOT typically associated with allergic conjunctivitis?
• What type of microscope can visualize viruses?
• Which test is known for measuring stereopsis?
• What is the abbreviation for gram?
• What is the term for an area of complete or partial blindness in an otherwise normal visual field?
• What practice is used to measure the thickness of the cornea?
• Which two colors are primarily tested in color vision tests?
• What are common symptoms of conjunctivitis?
• What part of the eye is responsible for maintaining intraocular pressure?
• What is the medical term for the inward turning of the eye?
• What is the term for a pressure reading in the eye?
• What is one common side effect of eye drops for glaucoma?
• What is the primary purpose of the Schirmer test?
• What is typically the main reason a patient visits for eye issues related to fatigue?
• What is the condition called that leads to impaired vision due to aging, specifically the loss of ciliary muscle function?
• What type of drug is often administered to relieve allergy symptoms in the eye?
• In the fraction 20/20, what does the numerator represent?
• Which condition is characterized by a cone-shaped protrusion of the cornea?
• What is a common cause of sudden vision loss?
• What condition is characterized by both dilation of the pupil and loss of accommodation?
• What does the term "presbyopia" refer to?
• What is characterized by a large regular pupil that reacts sluggishly after a long latent time?
• Which type of astigmatism typically requires a toric lens for correction?
• What is the term for the surgical procedure to remove a cataract?
• Which test for strabismus uses the corneal reflex and does not involve prisms?
• What is the term used to describe the part of a glasses frame that connects the two lenses?
• What is the normal axial length of the eye?
• What effect does atropine have on the eye when administered?
• Which of the following symptoms is commonly associated with allergic conjunctivitis?
• What term describes the inflammation of the conjunctiva typically caused by allergies?
• What instrument is used for a direct examination of the retina?
• What is the diameter of the plastic prism within the applanation tonometer?
• What is the name of the test that uses prisms to center the corneal reflex and measures eye misalignment?
• What does the term "myopia" refer to?
• What is the purpose of a pinhole disc in vision assessment?
• Which visual field test method is commonly used to detect peripheral vision loss?
• What is the recommended distance for assessing distance acuity?
• What type of tonometer is typically mounted on a slit lamp?
• What term is used to describe double vision?
• At which settings should the calibration of the Goldmann applanation tonometer be checked?
• What is the primary function of cycloplegic eye drops?
• Which eye drop is commonly used for its immediate dilation ability during exams?
• Which condition is characterized by increased pressure in the eye?
• Which of the following symptoms might suggest a diagnosis of allergic conjunctivitis?
• What type of astigmatism occurs when the horizontal meridian is steeper than the vertical meridian?
• Which part of the eye is primarily affected in diabetic retinopathy?
• Which bulb number is used in a non-contact tonometer?
• What test measures the sharpness of vision?
• What is the purpose of a fundus examination?
• What does the term "aniseikonia" refer to?
• What is the area between the two focal points of a spherocylindrical lens called?
• How many degrees does the Amsler grid evaluate?
• What instrument is used to measure intraocular pressure?
• What type of lens is typically used to correct myopia?
• What type of lens correction is specified by Cylinder Power?
• A consensual light reflex in the right eye results in what effect on the pupils?
• What is the primary purpose of a visual acuity test?