Twice, in the past to weeks, I have seen eye injuries in an elementary school setting. In both cases, involving different students, after being struck direclty in one eye, the pupil was small, 1 to 2 mm, round and did not react to light. The pupil of the uninjured eye was 3 to 5 mm, round and reacted normally to light. One student was hit with a light weight, hollow, plastic whiffle ball. The other student was "punched" by another student of substantial size. There were no other signs of trauma. The injuries were treated as emergencies and paramedics were contacted. Both students were transported via amublance to a hospital emergency room. After about 2 hours, eye function returned to normal in both cases. I have been unable to locate possible explanations for this reaction to an eye injury. What is the pathology behind this response to injury? Is there any way to know if normal eye function will return without intervention? I appreciate any information or explanation you can offer. Thank you. Note: the ht. wt. age provided were required fields and do not apply to this question.