Final answer:
Multiple sclerosis can cause eye-related manifestations such as optic neuritis and nystagmus.
Step-by-step explanation:
Multiple sclerosis (MS) is an autoimmune disease that affects the central nervous system, including the brain and spinal cord. One of the eye-related manifestations of MS is optic neuritis, which is inflammation of the optic nerve. This can cause double vision, blurred vision, and loss of color vision. Another eye-related symptom is nystagmus, which is involuntary eye movement. These eye-related manifestations can occur due to the immune system attacking the myelin sheath that surrounds the optic nerve.