A previously healthy 29-year-old New Zealand European female was referred with a four-week history of blurred central vision in the left eye and headaches after returning from her honeymoon in Italy. She’d had two episodes of blue and white flashing lights and the colour was desaturated in her left eye. Earlier the same day, the patient had seen a neurologist who considered the symptoms were not suggestive of demyelinating disease. During childhood, convergence exercises were implemented and Irlen lenses had been prescribed. Medical history was unremarkable but there was a positive family history of multiple sclerosis, with the patient’s mother affected.
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