<prompt> Earliest feature in Multiple sclerosis isOptic neuritisInter nuclear ophthalmologiaAtaxiaWeakness  <response>: Initial Symptoms and percent of cases Sensory loss -37 Optic neuritis- 36 Weakness -35 Ataxia-11. Optic nerve Pain and temporary vision loss in one eye are common symptoms of optic neuritis. Optic neuritis is linked to multiple sclerosis MS, a disease that causes inflammation and damage to nerves in your brain and spinal cord Ref Davidson edition23rd pg1110 