Example of how<unk>  affected one eye of a person with multiple sclerosis Major symptoms are sudden loss of vision (partial or complete), sudden blurred or "foggy" vision, and pain on movement of the affected eye. Early symptoms that require investigation include symptoms from multiple sclerosis (twitching, lack of coordination, slurred speech, frequent episodes of partial vision loss or blurred vision), episodes of "disturbed/blackened" rather than blurry indicate moderate stage and require immediate medical attention to prevent further loss of vision. Other early symptoms are reduced night vision, photophobia and red eyes. Many patients with<unk>  may lose some of their color vision in the affected eye (especially red), with colors appearing subtly washed out compared to the other eye. Patients may also experience difficulties judging movement in depth which can be particular troublesome during driving or sport (Pulfrich effect). Likewise transient worsening of vision with increase of body temperature (Uhthoff's phenomenon) and glare disability are a frequent complaint. However, several case studies in children have demonstrated the absence of pain in more than half of cases (approximately 60%) in their pediatric study population, with the most common symptom reported simply as "blurriness." Other remarkable differences between the presentation of adult<unk>  as compared to pediatric cases include more often unilateral<unk>  in adults, while children much predominantly present with bilateral involvement. On medical examination the head of the optic nerve can easily be visualized by a slit lamp with a high positive lens or by using direct ophthalmoscopy; however, frequently there is no abnormal appearance of the nerve head in<unk>  (in cases of retrobulbar<unk> , though it may be swollen in some patients (anterior papillitis or more extensive<unk> . In many cases, only one eye is affected and patients may not be aware of the loss of color vision until they are asked to close or cover the healthy eye.
Optic neuritis
Far-sightedness
Anterior ischemic optic neuropathy
Ischemic optic neuropathy
Posterior ischemic optic neuropathy
Ocular ischemic syndrome
Optic neuropathy
Vitreoretinopathy