| http://www.w3.org/ns/prov#value | - ??? Colour vision is a test of anterior visual pathway function ??? mainly of the optic nerve. ??? In optic neuritis (e.g. may be associated with multiple sclerosis), papilloedema, optic nerve compression from tumour or Graves??? ophthalmopathy or any optic neuropathy, visual acuity may be normal and only colour vision is affected. ??? Acquired colour vision defects will be noticed by the patient,
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