What could cause eye pain?

Many causes: Anything that irritates the ocular surface, anything that refers pain in or around the eyes, straining, inflammation, infection, neoplastic, neuropathies, allergic, high pressure, radiation, trauma, etc.

Numerous causes: Best way to determine the cause is to have an eye exam. Could be as simple as dry eyes or as serious as inflamation.

Several: This is a problem that requires a face-to-face meeting with your doctor. In that meeting, your doctor will listen to you, perform a throrough examination and possibly order labs or other tests. Based on this information, he/she will be able to tell you what's wrong and what to do about it.

Many causes: Needs evaluation / exam to determine the cause of pain.

Many reasons: You need to see an eye doctor to make sure it's not something serious.

Many things: Many things. Some related to the eye. Some with referred pain to the eye. See eye doc for evaluation.