Sudden loss of vision: a case study
Bert, aged 80 years, presented to his general practitioner with sudden, painless loss of vision in his right eye 2 hours prior. He was an insulin-dependant type 2 diabetic, with a history of hypertension and dyslipidaemia. Right visual acuity consisted only of hand movements, compared to 6/6 vision in the left eye. There was a right relative afferent pupillary defect. Dilated fundus examination demonstrated multiple emboli in the arterial circulation, early arteriolar attenuation, and a cottonwool spot along the infero-temporal vascular arcade (Figure 1 and 2). Left fundus was normal.