This finding is seen in a construction worker who had acute vision loss at work. On exam, you note that this pupil constricts when light is shined on the opposite eye, but there is less constriction when light is shined on the affected eye. When fluorescin is placed, you note this (they are different pictures, but imagine the top of the green to be the top of the teardrop pupil):
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Challenge: Where's the injury? What happened?