What is a subconjunctival haemorrhage?
A subconjunctival haemorrhage occurs when blood pools between the conjunctiva - the clear layer at the front of the eye - and the sclera, the white layer below. Part or all of the surface of the eye generally appears bright red. It can occur because of a blow, or even due to something as simple as a coughing fit. It is usually a minor injury that gets better within a couple of weeks.