ABSTRACT
A 76-year-old man presented with sudden loss of vision in his right eye. On driving his car that morning, he was almost involved in a collision. At that point, he noticed loss of right-sided peripheral vision but was not aware of the precise time that his vision had deteriorated. There was no pain around the eye. Over the preceding week, he had experienced blurring of vision and floaters in his right eye. He denied further symptoms. His past medical history included hypertension and ischaemic heart disease. He took 5 mg amlodipine OD and 75 mg aspirin OD regularly. He lived with his husband but also had regular sexual intercourse with multiple partners. He stated that he always used barrier protection methods with all partners. A sexual health screen had been negative for HIV and syphilis 8 months earlier.
