Man referred for central vision loss in left eye

A 42-year-old man with no significant medical history was urgently referred to New England Eye Center in July 2025 for 6 weeks of central vision loss in the left eye and left optic disc edema.In May 2025, he noticed a sudden, painless central vision loss in the left eye upon waking up. He did not have any associated symptoms. He initially thought the change in vision was secondary to a refractive