Clinical approach to optic neuropathies

Raed Behbehani, Raed Behbehani
2007 Clinical Ophthalmology   unpublished
Optic neuropathy is a frequent cause of vision loss encountered by ophthalmologist. The diagnosis is made on clinical grounds. The history often points to the possible etiology of the optic neuropathy. A rapid onset is typical of demyelinating, infl ammatory, ischemic and traumatic causes. A gradual course points to compressive, toxic/nutritional and hereditary causes. The classic clinical signs of optic neuropathy are visual fi eld defect, dyschromatopsia, and abnormal papillary response.
more » ... lary response. There are ancillary investigations that can support the diagnosis of optic neuropathy. Visual fi eld testing by either manual kinetic or automated static perimetry is critical in the diagnosis. Neuro-imaging of the brain and orbit is essential in many optic neuropathies including demyelinating and compressive. Newer technologies in the evaluation of optic neu-ropathies include multifocal visual evoked potentials and optic coherence tomography.