48-year-old female with sudden onset of painless diminution of vision in left eye

A 48-year-old female came to ophthalmology outpatient department with sudden onset painless diminution of vision in left eye since last 4 days, which was not associated with trauma, floaters, flashes of light, blurring of vision or any other ocular complaints. On general examination patient's pulse was 76/min that was regularly regular, and blood pressure was found to be 200/120. On ophthalmic examination, the distant vision in left eye was finger counting close to face that was not improved with refraction and in right eye was 6/6. In left eye, anterior segment examination was normal except for relative afferent pupillary defect and early cortical cataract, while fundus examination revealed findings shown in Figures 1 and 2