Steady-state PVECP is superior to transient PVECP in the diagnosis of optic neuritis.
OBJECTIVE
To compare the diagnostic value for optic neuritis between transient pattern visual evoked potentials (PVECP) and steady-state PVECP.


METHODS
We retrospectively studied 86 eyes of 69 patients with optic neuritis who visited our clinic. PVECPs to 3 rev/sec stimulation (transient) and 12 rev/sec stimulation (steady-state), were recorded in all patients.


RESULTS
All of the cases with non-recordable transient PVECP showed non recordable steady-state PVECP Conversely, the cases with non-recordable steady-state PVECP often showed measurable transient PVECP where the latency of the P100 component was delayed. In 51 cases with unilateral optic neuritis, the amplitude ratio of the P100; affected eye/non-affected eye was significantly smaller in the steady-state PVECP than in the transient PVECP CONCLUSION: To detect visual dysfunction in optic neuritis, a steady-state PVECP was more sensitive than a transient PVECP.
Takasoh
M
M
Department of Ophthalmology, Chiba University School of Medicine, Japan.
Adachi-Usami
E
E
Mizota
A
A
D000293:Adolescent; D000328:Adult; D000368:Aged; D002648:Child; D005074:Evoked Potentials, Visual / Q000502:physiology*; D005260:Female; D006706:Homeostasis / Q000502:physiology*; D006801:Humans; D008297:Male; D008875:Middle Aged; D009902:Optic Neuritis / Q000175:diagnosis*; D010775:Photic Stimulation / Q000379:methods; D011930:Reaction Time; D013997:Time Factors