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  #1  
Old 05-16-2010
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Eye Pupillary light reflex

A 45-year-old woman with progressive myopia develops sudden patchy loss of vision in her right eye. Funduscopic examination shows a large retinal detachment in the right eye. The retina in the left eye is normal. Which of the following will most likely be seen if the pupillary light reflex is tested by swinging a light source from the left eye to the right eye?
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
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Old 05-16-2010
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constriction of left dilation of right .
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  #3  
Old 05-16-2010
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I agree D.

The sensory limb is disturbed right, so the ipsilateral direct reflex, and contralateral consensual reflexes will be lost.
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  #4  
Old 05-16-2010
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Default its marcus gunn pupil

D. Dilatation of the right pupil and dilatation of the left

its a case of marcus gunn pupil..due to retinal detachment(lesion of afferent pathway)
loss of Direct reflex & Preservation of Indirect reflex in affected eye...
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Old 05-16-2010
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Arrow

Marcus Gunn Reaction explained beautifully here
Marcus Gunn Reaction
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Old 05-17-2010
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i think both pupil will contrict becoz of consensual light reflex which should be normal in this case.
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  #7  
Old 05-17-2010
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ITS d MARCUSS GUNN REACTION
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  #8  
Old 05-18-2010
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Default Choice D

Marcus-Gunn reaction, as mention above
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