Neutralizing Lens Power Quiz
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Questions and Answers

What is the purpose of determining the patient's maximum accommodative amplitude?

  • To measure the patient's pupil size
  • To assess the eye's ability to focus on distant objects
  • To evaluate the dioptric distance between far-point and near-point of accommodation (correct)
  • To determine the patient's visual acuity

    • What is the main material required for the minus lens method for measuring accommodation amplitude?

  • Snellen chart
  • Tonometer
  • Phoropter or loose lens racks (correct)
  • Ophthalmoscope

    • Why is testing done monocularly for measuring accommodation amplitude?

  • It provides a clearer image of reading material
  • It allows for better illumination of the near target
  • It enables assessment of positive relative accommodation (correct)
  • It prevents double vision during testing

    • What would be the patient instruction during the measurement of maximum accommodative amplitude?

    <p>&quot;Try to get the letters clear each time I change the lens in front of your eye&quot;</p> Signup and view all the answers

    What is the approximate distance at which the near target is set for measuring accommodative amplitude?

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

    Why is a small Hart chart not used as the near-point card for measuring accommodation amplitude?

    <p>It is not designed to measure accommodation amplitude</p> Signup and view all the answers

    What is the purpose of the cognitive retinoscopy described in the text?

    <p>To assess the patient's accommodative system, binocularity, and reading comprehension while performing a reading task</p> Signup and view all the answers

    What is the expected range for normal lag of accommodation?

    <p>+0.25 to +0.5 D</p> Signup and view all the answers

    What does a lag greater than +0.75 suggest according to the text?

    <p>Accommodative disorder</p> Signup and view all the answers

    What is the purpose of using 'probe' lenses in front of both eyes during retinoscopy?

    <p>To observe the effect of the lenses on motion, color, brightness, and reflex flexibility</p> Signup and view all the answers

    Which combination of reflex characteristics indicates that the material being read is too difficult to comprehend?

    <p>High 'with' motion, dulling of reflex, brick-red color</p> Signup and view all the answers

    What is most enjoyed by a boy in farming according to one of the reading paragraphs?

    <p>Making maple sugar</p> Signup and view all the answers

    In which grade level reading material are there interesting birds in a bird-room named Jackie?

    <p>Grade 5</p> Signup and view all the answers

    What did the king and queen lack according to one of the reading paragraphs?

    <p>Children in the house or garden</p> Signup and view all the answers

    'As always happens in such exigencies he was lost' is mentioned in which grade level reading material?

    <p>Grade 11</p> Signup and view all the answers

    'One day he saw his four feet' is part of which grade level reading material?

    <p>'Once there was a little pig.' (Grade 2)</p> Signup and view all the answers

    What does 'He lived with his mother in a pen.' refer to?

    <p>The little pig living with his mother in a pen.</p> Signup and view all the answers

    What is the purpose of the pull-away technique for amplitude of accommodation?

    <p>To measure the amplitude of accommodation by moving a near-point card away from the patient until they can first read the letters.</p> Signup and view all the answers

    What is the recording method for the push-up technique for amplitude of accommodation?

    <p>First sustained blur in inches or centimeters</p> Signup and view all the answers

    According to norms, what is the minimum amplitude of accommodation for a 30-year-old based on Hoffstetter's formula?

    <p>7.00 D</p> Signup and view all the answers

    What is the patient instructed to do in the pull-away technique for amplitude of accommodation?

    <p>To report being able to read the letters as the near-point card is moved away from them.</p> Signup and view all the answers

    What is used for binocular testing in the accommodative facility procedure?

    <p>Polaroid glasses and Acuity Suppression #9 vectogram</p> Signup and view all the answers

    What is the purpose of the accommodative facility procedure?

    <p>To determine the patient's ability to make rapid and accurate step changes in accommodation.</p> Signup and view all the answers

    What is used in the push-up technique for amplitude of accommodation for patients under 30 years old?

    <p>+/-1.50 lens flippers</p> Signup and view all the answers

    What is divided to obtain diopters in the pull-away technique if measured in centimeters?

    <p>$1/ ext{meters}$</p> Signup and view all the answers

    What is done if the examiner is uncertain whether the patient is really clearing the print in the accommodative facility procedure?

    <p>Ask them to read numbers aloud.</p> Signup and view all the answers

    What does dividing 40 by the number of inches give in the push-up technique for amplitude of accommodation?

    <p>$ ext{Linear distance of first sustained blur} (in diopters)$</p> Signup and view all the answers

    What should be added to obtain the amplitude in diopters in both push-up and pull-away techniques?

    <p>-2.50 diopters for working distance</p> Signup and view all the answers

    What should be used for monocular testing in the accommodative facility procedure?

    <p>$+/-1.50$ lens flippers</p> Signup and view all the answers

    What method utilizes a polarized vectogram instead of the near point card?

    <p>Acuity Suppression Vectogram #9</p> Signup and view all the answers

    How is Physiological diplopia monitored?

    <p>By monitoring suppression with a pen or pick-up stick</p> Signup and view all the answers

    What do patients need to report while undergoing a test involving the polarized Rx?

    <p>If one of the pens or sticks ever disappears while looking at the letters</p> Signup and view all the answers

    Which age group has an expected binocular accommodative facility of 5.0 cycles per minute (CPM)?

    <p>8-12 years old</p> Signup and view all the answers

    What is the purpose of Fused Cross Cylinder testing?

    <p>To evaluate the lead or lag of accommodation</p> Signup and view all the answers

    What is the purpose of NRA/PRA testing?

    <p>To measure flexibility between accommodation and convergence</p> Signup and view all the answers

    Which type of near point retinoscopy is used to objectively determine a patient's accommodative posture or lag of accommodation?

    <p>MEM retinoscopy</p> Signup and view all the answers

    What should be evaluated after the initial assessment in MEM retinoscopy?

    <p>Tentative near add</p> Signup and view all the answers

    What should patients do during MEM Retinoscopy?

    <p>&quot;With both eyes open, read the words on the card aloud&quot;</p> Signup and view all the answers

    What age group has an expected monocular accommodative facility of 7.0 cycles per minute (CPM)?

    <p>8-12 years old</p> Signup and view all the answers

    What is tested using Near Point Retinoscopies?

    <p>Range of clear vision at near point</p> Signup and view all the answers

    What is the purpose of selecting a tentative near point lens prescription through Fused Cross Cylinder testing?

    <p>To determine an appropriate near point lens prescription</p> Signup and view all the answers

    What does the Groffman tracing aim to improve?

    <p>Speed and accuracy of multiple small-angle saccadic and/or pursuit ocular motility</p> Signup and view all the answers

    What is recommended to add as a distractor for the Groffman tracing exercise?

    <p>Number/letter counting</p> Signup and view all the answers

    What is the purpose of the flashlight tag exercise?

    <p>To improve the accuracy, smoothness, and speed of pursuit ocular motility while minimizing head movements</p> Signup and view all the answers

    What type of filters may be used during the flashlight tag exercise?

    <p>Red-green filters</p> Signup and view all the answers

    What patient instruction is recommended for the flashlight tag exercise?

    <p>&quot;Try to put your flashlight spot on mine and move it to follow mine.&quot;</p> Signup and view all the answers

    What can be added as inter-sensory integration during therapy techniques for fixation, pursuit, and saccades?

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

    What is used to perform the Groffman tracing exercise?

    <p>Chalkboard, paper or computer</p> Signup and view all the answers

    What is NOT needed for the flashlight tag exercise?

    <p>&quot;Start at the ____ and follow the line to see what it connects to.&quot;</p> Signup and view all the answers

    What patient instruction is NOT recommended for the Groffman tracing exercise?

    <p>&quot;Count the number of lines you see.&quot;</p> Signup and view all the answers

    Which age group can perform Groffman tracing exercise binocularly?

    <p>5-10 years old</p> Signup and view all the answers

    What is the purpose of the Marsden Ball exercise?

    <p>To improve accuracy and smoothness of pursuits while minimizing head movements</p> Signup and view all the answers

    What equipment is required for the Keystone Rotator exercise?

    <p>Standing/keystone rotator and an eye patch</p> Signup and view all the answers

    What is the purpose of the Pegboard Rotator exercise?

    <p>To improve the speed and accuracy of pursuit ocular motility</p> Signup and view all the answers

    Which exercise may involve using red-green filters and monitoring suppression?

    <p>Keystone Rotator</p> Signup and view all the answers

    Which patient instruction is recommended for the Marsden Ball exercise?

    <p>&quot;Let the ball swing back and forth in front of you. Your job is to follow the ball with your eye(s). Try to keep your head still.&quot;</p> Signup and view all the answers

    What type of integration does the Marsden Ball exercise focus on?

    <p>Visual-motor integration</p> Signup and view all the answers

    Which exercise involves using a bunting stick and standing on one foot to minimize somato-sensory support?

    <p>Marsden Ball</p> Signup and view all the answers

    What is observed during the Keystone Rotator exercise to appreciate depth effect?

    <p>&quot;Notice whether the center floats closer or moves farther away&quot;</p> Signup and view all the answers

    What is recommended for adding motoric hand support during the Keystone Rotator exercise?

    <p>&quot;Have the patient point to the moving target, if necessary&quot;</p> Signup and view all the answers

    Which exercise involves using a rotating Peg Board Trainer?

    <p>Pegboard Rotator</p> Signup and view all the answers

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