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Case Study 8: Optic NeuritisScenario:%u2022 A 28-year-old woman presents with pain in her left eye, especially when moving it. She reports rapid deterioration of vision in the same eye over the past three days and difficulty distinguishing colors. On examination, her visual acuity in the left eye is reduced, and there is a relative afferent pupillary defect.Clincher:%u2022 The combination of subacute vision loss, eye pain exacerbated by eye movements, and color vision deficits in a young adult woman is highly suggestive of optic neuritis.Explanation:%u2022 Optic neuritis is an inflammation of the optic nerve, often associated with demyelinating diseases such as multiple sclerosis. The classic triad of symptoms includes vision loss, eye pain (especially with eye movements), and dyschromatopsia (impaired color vision).The relative afferent pupillary defect indicates unilateral optic nerve dysfunction. While optic neuritis often improves spontaneously, treatment with high-dose intravenous corticosteroids can hasten recovery and reduce the risk of developing multiple sclerosis in the short term.