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PHYSIOLOGICAL OPTICS (RNH) > 4 PRIMER (PHOTO-PUPIL/PUPILLARY REFLEX, LESION ON PUPILLARY PATHWAY) > Flashcards

4 PRIMER (PHOTO-PUPIL/PUPILLARY REFLEX, LESION ON PUPILLARY PATHWAY) Flashcards

1
Q

to check the integrity of the visual and pupillary pathway

  • PHOTO-PUPIL/PUPILLARY REFLEX
  • COLOR VISION
A

PHOTO-PUPIL/PUPILLARY REFLEX

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2
Q

Reflex that controls the diameter of the pupil in response to intensity of light that falls on the retina of the eye

  • PHOTO-PUPIL/PUPILLARY REFLEX
  • COLOR VISION
A

PHOTO-PUPIL/PUPILLARY REFLEX

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3
Q

Regulates the intensity of light entering the eye

  • PHOTO-PUPIL/PUPILLARY REFLEX
  • COLOR VISION
A

PHOTO-PUPIL/PUPILLARY REFLEX

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4
Q

smaller pupil-less light in

  • Greater intensity of light
  • Lower intensity of light
A

Greater intensity of light

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5
Q

larger pupil-more light in

  • Greater intensity of light
  • Lower intensity of light
A

Lower intensity of light

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6
Q

Stimulation of one retina by light produces contraction of pupil on the same eye

  • DIRECT LIGHT REFLEX
  • CONSENSUAL LIGHT REFLEX
  • ACCOMMODATIVE CONVERGENCE REFLEX
A

DIRECT LIGHT REFLEX

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7
Q

Stimulation of one retina by light produces a contraction in the opposite eye

  • DIRECT LIGHT REFLEX
  • CONSENSUAL LIGHT REFLEX
  • ACCOMMODATIVE CONVERGENCE REFLEX
A

CONSENSUAL LIGHT REFLEX

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8
Q

Person looking at an object close to the face will cause contraction of the pupils

  • DIRECT LIGHT REFLEX
  • CONSENSUAL LIGHT REFLEX
  • ACCOMMODATIVE CONVERGENCE REFLEX
A
  • ACCOMMODATIVE CONVERGENCE REFLEX
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9
Q

STUDY!!!!!

Arrange the PUPILLARY PATHWAY

1 POST-GANGLIONIC FIBER
2 ENDINGER WESTPHAL NUCLEUS 
3 OPTIC CHIASMA
4 PRE-GANGLIONIC FIBER
5 RETINA 
6 CILIARY GANGLION
7 OPTIC TRACT
8 SPHINCTER PUPILLAE, CILIARY MUSCLES
9 PRE-TECTAL NUCLEUS
10 OPTIC NERVE
A

5-10-3-7-9-2-4-6-1-8

5 RETINA 
10 OPTIC NERVE
3 OPTIC CHIASMA
7 OPTIC TRACT
9 PRE-TECTAL NUCLEUS
2 ENDINGER WESTPHAL NUCLEUS 
4 PRE-GANGLIONIC FIBER
6 CILIARY GANGLION
1 POST-GANGLIONIC FIBER
8 SPHINCTER PUPILLAE, CILIARY MUSCLES
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10
Q

responsible for the afferent limb of pupillary reflex (senses the Incoming light)

  • OPTIC NERVE
  • OCCULOMOTOR NERVE
A

OPTIC NERVE

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11
Q

responsible for the efferent limb of the pupillary reflex (drives the muscles that constricts the pupil)

  • OPTIC NERVE
  • OCCULOMOTOR NERVE
A

OCCULOMOTOR NERVE

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12
Q

Lesion is from retina to nucleus

  • RELATIVE AFFERENT PUPILLARY DEFECT
  • RELATIVE EFFERENT PUPILLARY DEFECT
A

RELATIVE AFFERENT PUPILLARY DEFECT

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13
Q

Lesion is from pre-ganglionic to post ganglionic fiber

  • RELATIVE AFFERENT PUPILLARY DEFECT
  • RELATIVE EFFERENT PUPILLARY DEFECT
A

RELATIVE EFFERENT PUPILLARY DEFECT

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14
Q

If light is presented on the affected eye

  • No direct light reflex
  • with direct light reflex
A

No direct light reflex

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15
Q

If light is presented on the affected eye

  • No consensual light reflex
  • with consensual light reflex
A

No consensual light reflex

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16
Q

If light is presented on the non-affected

  • Direct light reflex are present
  • Direct light reflex are absent
A

Direct light reflex are present

17
Q

If light is presented on the non-affected

  • Consensual light reflex are present
  • Consensual light reflex are absent
A

Consensual light reflex are present

18
Q

LESIONS IN OPTIC CHIASMA

  • Direct light reflex are present
  • Direct light reflex are absent
A

Direct light reflex are present

19
Q

LESIONS IN OPTIC CHIASMA

  • Consensual light reflex are present
  • Consensual light reflex are absent
A

Consensual light reflex are present

20
Q

LESIONS IN OPTIC TRACT

  • Direct light reflex are present
  • Direct light reflex are absent
A

Direct light reflex are present

21
Q

LESIONS IN OPTIC TRACT

  • Consensual light reflex are present
  • Consensual light reflex are absent
A

Consensual light reflex are present

22
Q

LESIONS IN OPTIC CHIASMA is characterized by sluggish response

(T/F)

A

true

23
Q

LESIONS IN OPTIC TRACT is characterized by sluggish response

T/F

A

true

24
Q

LESIONS IN LGB

  • has effect in pupil reflex
  • has no effect in pupil reflex
A

has no effect in pupil reflex

PHYSIOLOGICAL OPTICS (RNH) (16 decks)

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