29th October 2020

A 90-year-old gentleman is referred to eye casualty following sudden onset loss of vision in his right eye

A 90-year-old gentleman is referred to eye casualty following sudden onset loss of vision in his right eye. He denies any associated symptoms. Visual acuity of the right eye is of light perception, while his left eye is 6/12. There is a relative afferent pupillary defect. Indirect ophthalmoscopy of the right eye shows a pale retina with a central red spot. What is the diagnosis?

Select the SINGLE most appropriate option from the list below. Select ONE option only.