Acute angle closure glaucoma following head and orbital trauma

The case is reported of a 52-year-old woman who suffered a minor head injury and orbital trauma and returned 2 days later with a unilateral headache, vomiting and photophobia. This was initially thought to be secondary to her head injury but, once severe visual impairment and a dilated unreactive pupil developed, the true diagnosis became obvious. A diagnosis of acute angle closure glaucoma was made and she was treated with no complications. This case highlights acute angle closure glaucoma as an important diagnosis to consider in patients who present with unilateral headache and dilated pupil after head injury.