What potential ocular issue can result from multiple sclerosis?

Multiple sclerosis (MS) is a disease that affects the central nervous system, particularly the brain and spinal cord, leading to a variety of neurological symptoms. One of the ocular issues associated with MS is optic neuritis, which is inflammation of the optic nerve. This condition can result in symptoms such as blurred vision, loss of color vision, and pain in the eye, especially during eye movement.

Optic neuritis occurs due to the demyelination of nerve fibers, a hallmark of MS. When the protective myelin sheath surrounding the optic nerve is damaged, it impairs the transmission of visual information from the eye to the brain, resulting in the visual disturbances associated with this condition.

The other options, while they may involve the eyes, are not directly linked to multiple sclerosis in the same way. Glaucoma is primarily related to elevated intraocular pressure and is not a direct consequence of MS. Conjunctivitis is an inflammation of the conjunctiva, typically caused by infections or allergies, rather than neurological conditions. Cataracts involve clouding of the lens of the eye, usually related to aging or other systemic diseases, and are not specifically tied to MS. Thus, optic neuritis stands out as the ocular issue most commonly and specifically associated