title: Pattern visual evoked potentials in traumatic optic neuropathy.
abstract: To evaluate the characteristics of pattern visual evoked potentials (PVEPs) in traumatic optic neuropathy (TON) compared with optic neuritis (ON), we retrospectively studied 47 patients with TON and 64 patients with unilateral ON. PVEPs elicited by the stimulation with 3 reversals/s were recorded in all patients. A PVEP could be recorded in 29.8% of the TON patients and 49.6% of the ON patients at their first visit. In the 14 patients with TON and recordable PVEPs, the mean amplitude ratio (affected/fellow eye) was 0.29 +/- 0.03 (SE) and the mean delay of the peak latency was 17.9 +/- 2.9 ms. In the 30 patients with ON and recordable PVEPs, the mean amplitude ratio was 0.48 +/- 0.04 (SE) and the mean delay of the peak latency was 23.5 +/- 2.5 ms. The amplitude ratio was significantly lower in patients with TON than in those with ON.
authors.affiliation: Department of Ophthalmology and Visual Science, Graduate School of Medicine, Chiba University, Chiba, Japan. ikejiri@ophthalm.m.chiba-u.ac.jp
authors.forename: Mitsuya
authors.initials: M
authors.lastname: Ikejiri
authors.forename: Emiko
authors.initials: E
authors.lastname: Adachi-Usami
authors.forename: Atsushi
authors.initials: A
authors.lastname: Mizota
authors.forename: Yoshihiko
authors.initials: Y
authors.lastname: Tsuyama
authors.forename: Osamu
authors.initials: O
authors.lastname: Miyauchi
authors.forename: Shintaro
authors.initials: S
authors.lastname: Suehiro
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D002648:Child; D002675:Child, Preschool; D005074:Evoked Potentials, Visual / Q000502:physiology*; D005260:Female; D006801:Humans; D007223:Infant; D007231:Infant, Newborn; D008297:Male; D008875:Middle Aged; D020221:Optic Nerve Injuries / Q000503:physiopathology*; D009902:Optic Neuritis / Q000503:physiopathology; D010775:Photic Stimulation; D011930:Reaction Time; D012189:Retrospective Studies; D014792:Visual Acuity / Q000502:physiology