optic nerve lesions

Last reviewed 01/2018

Signs of optic nerve dysfunction include:

• falling acuity
• impaired colour perception
• relative afferent pupil defect
• field defect - unilateral if only one eye nerve is affected, producing a central scotoma
• pallor of the disc head

During the neurological examination there must be a full assessment of acuity, fields and fundi in both eyes.