13th February 2025

A 65-year-old man with poorly controlled diabetes presents with sudden-onset painless visual loss in one eye.

A 65-year-old man with poorly controlled diabetes presents with sudden-onset painless visual loss in one eye. On ophthalmoscopy, he has a reduced red reflex in the affected eye and the details of the fundus are obscured. What is the most likely diagnosis?

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