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+--- Thread: q1 - 2confused2bdoctor (/showthread.php?tid=235744)
q1 - 2confused2bdoctor - ArchivalUser - 10-25-2007
A 45-year-old female with a long history of progressive myopia develops sudden patchy loss of vision in
her right eye. She is very alarmed and rushes to her family doctor. Funduscopic examination reveals a large
retinal detachment in the right eye. The retina in the left eye is normal. When the pupillary light reflex is
tested by shining a light in the right eye, the physician would likely note
A. constriction of the right pupil and constriction of the left
B. constriction of the right pupil and dilatation of the left
C. dilatation of the right pupil and constriction of the left
D. dilatation of the right pupil and dilatation of the left
E. no reaction of the right pupil and constriction of the left
0 - ArchivalUser - 10-25-2007
dilatation of the right pupil and dilatation of the left
0 - ArchivalUser - 10-25-2007
D. dilatation of the right pupil and dilatation of the left
0 - ArchivalUser - 10-26-2007
D.agree (Marcus gunn pupil)
0 - ArchivalUser - 10-26-2007
a.constriction in both pupils
0 - ArchivalUser - 10-26-2007
someone pls explain it
0 - ArchivalUser - 10-26-2007
dddd
0 - ArchivalUser - 10-26-2007
ddd is right
describes the finding during the swinging-flashlight test whereupon the patient's pupil dilates instead of constricting when the light swings from the unaffected "good" eye to the affected "bad" eye.
Upon shining the light into the "good" eye, both pupils will constrict. However, when the light moves to the "bad" eye, the light will not be perceived and both pupils will dilate as if there was no light at all.
It is also considered lack of a consensual reflex in the affected eye, showing optic nerve damage in which the sensory or afferent stimulus sent to the brainstem is reduced. Severe retinal disease may also yield a Marcus Gunn pupil.