I feel a sharp but not very strong pain behind my left eye only when i am jolted (i.e. jumping)?

Hard to say: Minor pain behind the eye is difficult to say since the differential diagnosis is so long. Best to see an eye care provider to rule out an eye problem if it persists, especially if the eye is red or has decreased vision, or some other visual complaint.

Get a checkup: There are many causes of pain and discomfort in and around the eyes. Generally, less serious condidtions tend to cause less and shorter amount of pain. If the discomfort persists, you should see either your primary physician or eye doctor. They can rule out any serious conditions that can lead to your condition.

Hard to say: You mean you feel this pain only when you jump? Most likely its sinus congestion. If lasts only for a second or two, almost invariably benign.

Prob nothing: A ct scan would help. Need more info fb vtumoy.