Which of the following statements is true about blurry vision in optic neuritis?

Blurry vision in optic neuritis often presents with color and contrast defects, making this statement the correct choice. In optic neuritis, which is inflammation of the optic nerve, patients frequently report not only a decrease in visual acuity but also difficulty in distinguishing colors and a decreased ability to perceive contrasts. These symptoms arise because inflammation affects the nerve fibers responsible for these specific visual functions, leading to a characteristic pattern of vision impairment.

Understanding the nuances of optic neuritis is essential in recognizing how it impacts vision. While some patients may experience recovery of vision over time, it is not guaranteed that vision will fully return to baseline or that treatment will always result in complete reversibility of symptoms. Therefore, the assertion that it is always reversible with treatment is misleading.

The other options, stating that blurry vision is not observed in patients or that it is generally not treated, also misrepresent the clinical realities of optic neuritis. Blurry vision is indeed a common symptom, and the condition is typically treated with corticosteroids to reduce inflammation and support recovery of visual function. Hence, the focus on color and contrast defects accurately depicts a significant aspect of the visual disturbances associated with optic neuritis.