Often, visual disturbances are one of the first signs that a person has multiple sclerosis (MS). Multiple sclerosis is a lifelong condition affecting the brain and spinal cord. People with MS can develop a condition called optical neuritis. An inflamed optic nerve can cause blurred vision or even complete sight loss. However, this is often temporary. MS can also cause problems with eye movement which, if out of alignment, can cause double vision. Some people also experience involuntary eye movements that make objects appear to wiggle or jerk.

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