Pupillary Light Reflex and Accommodation
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Questions and Answers

What happens during the pupillary light reflex when bright light shines on one retina?

  • Only the direct light reflex occurs.
  • Both direct and consensual light reflexes occur. (correct)
  • No response occurs.
  • Only the consensual light reflex occurs.
  • Which statement accurately describes the accommodation process?

  • Pupils constrict and eyes converge towards the center. (correct)
  • Pupils dilate and eyes diverge when focusing on a near object.
  • It involves rapid eye movements that maintain vision without converging.
  • Accommodation occurs only in older adults with presbyopia.
  • What changes occur to the lens of the eye as a person ages?

  • The lens decreases in size and density.
  • The lens remains unchanged in elasticity.
  • The lens becomes hard and glasslike, leading to presbyopia. (correct)
  • The lens becomes softer and more flexible.
  • Which of the following conditions is NOT a common cause of decreased visual functioning in older adults?

    <p>Retinal detachment</p> Signup and view all the answers

    At what age do the normally transparent fibers of the lens begin to thicken and yellow, indicating the onset of cataracts?

    <p>Age 70</p> Signup and view all the answers

    What most commonly causes loss of central vision in adults, leading to difficulties in reading fine print and performing intricate tasks?

    <p>Macular Degeneration</p> Signup and view all the answers

    Which of the following groups is at the highest risk for primary angle glaucoma?

    <p>African Americans</p> Signup and view all the answers

    Which risk factor is NOT associated with age-related macular degeneration?

    <p>Routine exercise</p> Signup and view all the answers

    What visual impairment level signifies that a person cannot see letters on the eye chart at line 20/50 or below?

    <p>Visual impairment (VI)</p> Signup and view all the answers

    Which condition is recognized as a leading cause of blindness due to chronic uncontrolled diabetes?

    <p>Diabetic Retinopathy</p> Signup and view all the answers

    Study Notes

    Pupillary Light Reflex

    • Pupil dilation in response to light is abnormal.
    • Pupil constriction in response to light is normal.
    • This is a normal response to light, showing PERRLA (Pupils Equal, Round, React to Light and Accommodation) is intact.

    Accommodation

    • Accommodation is the eye's adaptation to keep focus on a moving object.
    • Pupils constrict and eyes converge.
    • Convergence means the eyes move closer together (think cross-eyed).
    • Normal response includes pupillary constriction and convergence of eyes.

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    Related Documents

    Eyes Chapter 15 PDF

    Description

    Explore the mechanisms of pupillary light reflex and accommodation in this informative quiz. Understand how the pupil responds to light and the significance of convergence for maintaining focus on moving objects. Test your knowledge on this vital aspect of human visual function.

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