"Vessels can break from coughing, aggressive sneezing, rubbing your eye, etc.," Keany said. "It's important to understand the difference between a subconjunctival hemorrhage and hyphema.

Source: Focus Medica. Accumulation of blood in the space between the cornea and the iris, causing eye pain, blurred vision and sensitivity to light. The common cause is the injury to the eye.

Such data were age, sex, cause and place of injury, activity at time of injury, duration of injury before presentation to UCH, and treatment ... eye department protocol for traumatic hyphema.