Confrontation Visual Fields and Automated Perimetry
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Questions and Answers

What should be done with the fingers during the visual field testing procedure?

  • Use them to occlude the patient's eye
  • Point them at the patient
  • Illuminate them and place them midway between the patient and yourself (correct)
  • Hide them from the patient's view
  • Why should the patient occlude their right eye during the testing procedure?

  • To get a full view of the visual field
  • To rest the left eye
  • To evaluate the right eye
  • To evaluate the left eye (correct)
  • What is the purpose of fixating on the examiner's right eye during the testing procedure?

  • To monitor the patient's fixation (correct)
  • To distract the patient
  • To evaluate the patient's eye movement
  • To measure the pupillary response
  • What type of visual field testing uses a curved instrument and automated targets?

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

    What is the term for a visual field defect that affects half of the visual field?

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

    What is the name of the instrument used in campimetry?

    <p>Tangent Screen</p> Signup and view all the answers

    What is the term used to describe visual field defects that are the same size and shape in both eyes?

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

    What type of visual field defect is associated with ocular abnormalities?

    <p>Altitudinal defects</p> Signup and view all the answers

    What is the term used to describe a general reduction in overall sensitivity of the visual field?

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

    In what type of visual field defect is the corresponding visual fields of the two eyes affected?

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

    What is the term used to describe a loss of ¼ of the visual field in one or both eyes?

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

    What type of visual field testing method provides the mean deviation from the normal population?

    <p>Automated VF</p> Signup and view all the answers

    What is the primary purpose of performing Confrontation Visual Fields (CVF)?

    <p>To screen for Visual Field Defects (VFD) or to perform a more detailed VF evaluation</p> Signup and view all the answers

    What equipment is used to perform Confrontation Visual Fields?

    <p>Occluder and Overhead Lamp</p> Signup and view all the answers

    How should the patient be positioned during Confrontation Visual Fields?

    <p>Sitting at a distance of 60 to 80 cm from the examiner</p> Signup and view all the answers

    Why should the examiner not use 3 fingers during Confrontation Visual Fields?

    <p>Because it can be easily confused with 2 or 4 fingers</p> Signup and view all the answers

    What should the examiner do with their hand during Confrontation Visual Fields?

    <p>Keep the hand static and expose 1, 2 or 4 fingers</p> Signup and view all the answers

    What is the purpose of the examiner's peripheral field during Confrontation Visual Fields?

    <p>To identify the limits of where to place the hand</p> Signup and view all the answers

    What is a characteristic of a Homonymous Congruous Defect?

    <p>Affects the same half of the visual field in each eye</p> Signup and view all the answers

    What is the main difference between Shallow or Relative Scotomas and Deep or Absolute Scotomas?

    <p>Response to different stimuli intensities</p> Signup and view all the answers

    What is the name of the scotoma that affects half of the central visual field?

    <p>Hemianopic Scotoma</p> Signup and view all the answers

    What is the characteristic of a Ceco-central Scotoma?

    <p>Affects a horizontal oval area between the point of fixation and the blind spot</p> Signup and view all the answers

    What is the name of the scotoma that affects a circular area of depressed vision surrounding the point of fixation?

    <p>Annular Scotoma</p> Signup and view all the answers

    What is the main difference between Peripheral Scotoma and Central Scotoma?

    <p>Location of the scotoma in the visual field</p> Signup and view all the answers

    What type of visual field defect is typically seen in glaucoma?

    <p>Altitudinal defect respecting the vertical meridian</p> Signup and view all the answers

    What is the result of a lesion to the proximal fibers of an optic nerve and the nasal fibers of the opposite eye?

    <p>Junctional scotoma</p> Signup and view all the answers

    What type of visual field defect is seen in a lesion to the optic tract or optic radiations?

    <p>Homonymous hemianopsia</p> Signup and view all the answers

    What is the term for a visual field defect that affects the upper or lower half of the visual field?

    <p>Altitudinal defect</p> Signup and view all the answers

    What is the result of a lesion in the center of the chiasm?

    <p>Bitemporal hemianopsia</p> Signup and view all the answers

    What type of visual field defect is seen in patients with strokes or traumatic brain injury?

    <p>Hemianopia or quadrantanopia</p> Signup and view all the answers

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