Following his recent decision victory over Jake Shields at UFC 129, Welterweight Champion Georges St Pierre (GSP) disclosed that he was recovered from hyphema, sustained following a direct trauma to his eye during the fight. But what exactly is hyphema?

Description
Hyphema is bleeding in the anterior chamber of the eye, between the cornea and iris.

Causes

• Direct trauma, commonly from a sporting activity
• Blood vessel abnormality
• Cancer of the eye
• Severe inflammation of the iris

Symptoms

• Blurred or absent vision in the affected eye
• If large, blood can be seen pooling in the front of the eyeball
• Pain in the eye
• Sensitivity to light

Treatment

• Medical examination should be sought following an injury to the eye.
• In mild cases, no treatment is needed as the blood is absorbed in a few days.
• If more severe, bed rest, eye patching, and sedation to reduce the likelihood of recurrent bleeding may be employed.
• Eye drops to decrease the inflammation or lower the intraocular pressure may be used if needed.
• Blood may need to be removed, especially if the intraocular pressure is severely increased or the blood is slow to absorb again.

Sources:
http://www.ncbi.nlm.nih.gov/pubmedhealth/PMH0002016/
http://www.emedicinehealth.com/hyphema_bleeding_in_eye/article_em.htm