Chiasmal neuritis can be diagnosed based on clinical and imaging findings. Most patients have a good prognosis with good recovery of lost visual acuity.
Diagnostic criteria:
(1) acute visual loss
(2) one or both of the following:
(2a) chiasmal visual field pattern to the visual loss (bitemporal hemianopsia or junctional scotoma)
(2b) inflammation of the optic chiasm on MRI (enlargement and/or enhancement)