Recent

  • Show all results for ""
Automated Visual Field Testing Quiz
50 Questions
100 Views

Automated Visual Field Testing Quiz

Created by
@FeatureRichHazel

Questions and Answers

While performing an automated visual field test, your patient has 2 or more false negatives. The best course of action is:

  • Increase the stimulus size
  • Make sure the fellow eye is patched properly
  • Let the patient take a break (correct)
  • Remind the patient to look only at the fixation light

    • As you are instructing a patient how to take an automated visual field test, the patient states they cannot see the fixation light. Your next step would be:

  • Increase the stimulus size
  • Remove the patch from the fellow eye
  • Change the fixation target to a diamond (correct)
  • Tape the patient's upper eyelid

    • Which of the following instructions are important to tell patients when performing an automated visual field test?

  • Push the button when you see very bright lights
  • Tell me when you see a light
  • Be sure not to miss any lights
  • Push the button when you see any light (correct)
  • Do not blink during the test

    • A patient doesn't push the response button when a light is presented to him during an automated visual field test. This is an example of:

    <p>Threshold VFT</p> Signup and view all the answers

    A patient responds to light that is presented with a visual field machine has already determined his blind spot is. This is an example of:

    <p>A fixation loss</p> Signup and view all the answers

    A patient who is performing an automated visual field test has multiple fixation masses and false positives. This is likely due to:

    <p>Anxiety</p> Signup and view all the answers

    If an automated visual field machine cannot locate the patient's blind spot the best course of action is to:

    <p>All of the above</p> Signup and view all the answers

    When performing kinetic visual field testing, it's important to:

    <p>Move the stimulus from a non-seeing area to a seeing area</p> Signup and view all the answers

    The main difference between static and kinetic VFT is:

    <p>One is performed with a moving stimulus and the other with a stationary stimulus</p> Signup and view all the answers

    Which of the following tests only the central 20º of visual field?

    <p>Amsler Grid</p> Signup and view all the answers

    When performing confrontation visual field testing it's important to define a visual field defect boundaries by vertical and horizontal marks because:

    <p>It can indicate or rule out neurologic causes</p> Signup and view all the answers

    Why is it important to patch or cover the fellow eye when performing VF testing?

    <p>Because the visual fields in each eye overlap one another</p> Signup and view all the answers

    Modifying Factors, Context, and Quality are all components of:

    <p>HPI</p> Signup and view all the answers

    A PT tells you he smokes cigarettes. Where would you enter this information?

    <p>Social Hx</p> Signup and view all the answers

    You are eliciting a chief complaint from a patient who complains of a headache. Which of the following questions should you ask him?

    <p>Location?</p> Signup and view all the answers

    While assessing the patient's pupil size in ambient lighting, you notice the pupils alternately become larger and smaller than larger again under study illumination. This is:

    <p>Normal</p> Signup and view all the answers

    Normal pupils:

    <p>Are different sizes in the dark and light</p> Signup and view all the answers

    The amount of contraction and radiation of a pupil depends on:

    <p>A &amp; C</p> Signup and view all the answers

    Accommodation, Convergence, and Pupillary Constriction are evidence of:

    <p>The Near Flex Triad</p> Signup and view all the answers

    An Afferent Pupillary Defect:

    <p>Is sometimes a sign of an underlying disorder</p> Signup and view all the answers

    APD can occur in:

    <p>Optic Neuritis</p> Signup and view all the answers

    Anisocoria without ptosis suggests:

    <p>Adie's pupil</p> Signup and view all the answers

    IOL Master Keratometry:

    <p>Is more accurate than a traditional keratometer</p> Signup and view all the answers

    K readings of 42.75/45.25 x 180 indicate:

    <p>2.5D of astigmatism</p> Signup and view all the answers

    With the Rule Astigmatism:

    <p>Occurs when the vertical K is steeper than horizontal K</p> Signup and view all the answers

    Assuming the diameter remains unchanged, the smaller the BC, the:

    <p>A &amp; C</p> Signup and view all the answers

    If the radius of a contact lens is the same but the diameter is increased:

    <p>The lens becomes steeper</p> Signup and view all the answers

    A Toric contact lens has:

    <p>Scribe marks</p> Signup and view all the answers

    An ultrasonic transducer measures:

    <p>All of the above</p> Signup and view all the answers

    Contact lens spherical aberration can be measured by:

    <p>Wavefront Aberrometry</p> Signup and view all the answers

    All of the following are important for contact lens wearers except:

    <p>That they do not have cataracts</p> Signup and view all the answers

    You are working up a contact lens patient. Which of these questions is the most important to ask?

    <p>Do you sleep in your CLs?</p> Signup and view all the answers

    Which of these components is a routine part of a CL work-up?

    <p>Over refraction</p> Signup and view all the answers

    Why is it important to assess CL centration and movement?

    <p>To keep the cornea healthy and the patient comfortable</p> Signup and view all the answers

    A CL that is too tight will:

    <p>All of the above</p> Signup and view all the answers

    The Taco Test should be performed:

    <p>None of the above</p> Signup and view all the answers

    The patient should look ___ when inserting a SCL:

    <p>Up</p> Signup and view all the answers

    How does a patient center a SCL after insertion?

    <p>By blinking</p> Signup and view all the answers

    The best way to remove a SCL is:

    <p>With one's thumb and index finger</p> Signup and view all the answers

    A RGP lens:

    <p>Should be inserted before applying makeup</p> Signup and view all the answers

    The main goal of counseling a patient regarding CL care is to:

    <p>Keep the lenses clean and free of microbes</p> Signup and view all the answers

    What is the most important step in disinfecting CLs?

    <p>Rubbing with a cleaner</p> Signup and view all the answers

    An advantage of Multi Purpose Solution is:

    <p>It's convenient and readily available</p> Signup and view all the answers

    Hydrogen Peroxide Disinfection System:

    <p>A &amp; B</p> Signup and view all the answers

    Before beginning manual lensometry it's important to:

    <p>Focus the eyepiece</p> Signup and view all the answers

    Equipment made of metal, plastic, or vinyl should be cleaned by:

    <p>A soft cloth - either dry or one that has been sprayed with a small amount of cleaning solution</p> Signup and view all the answers

    To clean corrosion off of bulb contacts use:

    <p>An eraser</p> Signup and view all the answers

    What's the best way to grasp a bulb?

    <p>With a lens cloth or rubber bulb</p> Signup and view all the answers

    To place the Snellen eye chart at the correct distance for a 10' chart you must:

    <p>Measure the distance from the chart to the patient to equal 10'</p> Signup and view all the answers

    What line on the Snellen chart is used to calibrate a projector?

    <p>20/200</p> Signup and view all the answers

    Study Notes

    Automated Visual Field Testing

    • False negatives during testing indicate patient fatigue; allowing a break is essential.
    • If a patient cannot see the fixation light, changing its shape to a diamond may help.
    • Patients should push the button upon seeing any light, as this maximizes test accuracy.
    • Presenting a brighter light after an initial non-response tests the patient's threshold for visual detection.
    • Fixation loss is identified when patients respond to lights presented within their known blindspot.

    Factors Influencing Test Results

    • Multiple fixation losses and false positives are often due to patient anxiety.
    • If a machine fails to locate the blindspot, a complete review of testing protocols is needed.
    • Kinetic visual field tests require moving stimuli from non-seeing to seeing areas for accurate results.
    • Static and kinetic visual field testing differ in that one uses a stationary stimulus, while the other employs a moving one.

    Various Types of Visual Field Tests

    • The Amsler Grid assesses the central 20º of the visual field, useful for detecting macular issues.
    • Confrontation visual field testing uses markers to analyze defect boundaries, aiding in ruling out neurological conditions.

    Importance of Eye Coverage

    • Covering the fellow eye during testing is crucial as visual fields overlap, potentially affecting test results.

    Components in Medical History

    • The History of Present Illness (HPI) includes Modifying Factors, Context, and Quality which are essential for determining current health issues.
    • Social history includes lifestyle factors like smoking, which can affect ocular health.

    Assessing Pupil Response

    • Normal pupil response displays variance in size between ambient light and darkness.
    • The Near Flex Triad consists of accommodation, convergence, and pupillary constriction, indicating a healthy response.

    Anomaly Recognition

    • An afferent pupillary defect (APD) may suggest a cranial nerve issue, detectable in cases of optic nerve disease.
    • Anisocoria with no ptosis often indicates Adie's pupil, a benign condition.

    Contact Lens Specifications

    • Toric contact lenses feature scribe marks for orientation during fitting and assessment.
    • Accurate keratometry readings reveal corneal astigmatism, which factors into lens design.

    Wearing and Maintaining Contact Lenses

    • Essential for comfort and corneal health is regular assessment of lens centration and movement.
    • Proper disinfection techniques, including rubbing lenses with cleaner, prevent microbial growth.

    Cleaning Equipment and Handling

    • Use a soft cloth with minimal cleaning solution for maintaining metal, plastic, or vinyl instrument cleanliness.
    • Employing an eraser can effectively remove corrosion from bulb contacts.

    Vision Testing Protocols

    • To ensure proper distance, a Snellen eye chart for 10 feet must be positioned to equalize distances for accuracy in screening.

    Projector Calibration

    • The 20/200 line on the Snellen chart serves as a standard for calibrating projectors for consistent visual acuity testing.

    Studying That Suits You

    Use AI to generate personalized quizzes and flashcards to suit your learning preferences.

    Quiz Team

    Description

    Test your knowledge on automated visual field testing and the various factors influencing test results. This quiz addresses key concepts such as patient response behaviors, types of tests, and troubleshooting methods. Enhance your understanding of visual field assessment protocols essential for accurate patient evaluations.

    More Quizzes Like This

    Visual Field and Perimetry Quiz
    5 questions

    Visual Field and Perimetry Quiz

    ReadyReasoning avatar
    ReadyReasoning
    Visual Field Assessment and Neglect Test
    79 questions

    Visual Field Assessment and Neglect Test

    PicturesqueHill avatar
    PicturesqueHill
    Introduction to Visual Field Testing
    30 questions

    Introduction to Visual Field Testing

    MeaningfulPeachTree avatar
    MeaningfulPeachTree
    Visual Field Assessment
    45 questions

    Visual Field Assessment

    FinestScandium avatar
    FinestScandium
    Use Quizgecko on...
    Browser
    Open
    Browser
    Browser