I had a couple of bad headaches this week that resulted in bleeding on the white of the eye. It started in the corner and since then has spread around the Iris top & bottom. I was awakened by the pain on two occasions last night and this morning. The intense pain lasts about 15 minutes then subsides. I have been diagnosed in the past with cluster headaches (an MRI did not reveal anything) and chronic sinusitis, though it is not active at this time( mucous, sneezing, big head puffiness soreness around the eye) Only at the time of the headache is there pain behind the eye. I have been using ice compresses when it s real bad, but otherwise it goes away in 15 minutes.