Multiple evanescent white dot syndrome has been detected in people after a COVID-19 infection and after getting the vaccine, but never under both circumstances in the same patient.

Scientists from New Zealand have uncovered the first case of a rare eye disease linked to both the COVID-19 vaccine and the virus itself, a new study published in the Journal of Ophthalmic Inflammation and Infection reveals.

A 28-year-old otherwise healthy patient was diagnosed with multiple evanescent white dot syndrome (MEWDS) after complaining of vision problems just two days after receiving her second dose of the Pfizer-BioNTech vaccine.

The woman’s symptoms included dark blind spots, phantom light flashes, and overall decreased vision—all specific to her right eye.