This is common and tends to occur spontaneously or sometimes after straining, especially vomiting. It can also occur in acute haemor-rhagic conjunctivitis caused by certain viruses and occasionally bacterial conjunctivitis. The eye becomes suddenly red and although the patient might experience a slight pricking, the condition is usually first noticed in the mirror or by a friend. The haemorrhage gradually absorbs in about 14 days and investigations usually fail to reveal any underlying cause. Rarely, it is necessary to cauterise the site of bleeding if the haemorrhage is repeated so often that it becomes a nuisance to the patient (Figure 6.1).
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