title: Pupil cycle time: as indicator of visual pathway dysfunction in multiple sclerosis.
abstract: To evaluate the value of pupil cycle time (PCT) as an indicator of optic nerve dysfunction in patients with multiple sclerosis (MS), 42 patients with MS and 35 control subjects were included to the study. Patients with MS with a history of ON were accepted as group 1, without a history of ON as group 2 and healthy control subjects as group 3. Groups were compared with Chi-square and one-way ANOVA tests. Correlations of PCT results with age, best corrected visual acuity, duration of MS, visual field (VF) test, visual evoked potential (VEP) latans, retinal nerve fiber layer (RNFL), and ganglion cell layer-inner plexiform layer (GCL-IPL) thicknesses were analyzed. Mean PCT was 1286.4 ± 357.8 ms in group 1, 1021.3 ± 102.3 ms in group 2, and 872.5 ± 69.4 ms in group 3 (p < 0.001). Moderate-to-significant correlations were found between PCT measurements and duration of MS, VF test, VEP latans, RNFL, and GCL-IPL thicknesses. PCT might be an alternative method to evaluate the optic nerve function in patients with MS.
authors.affiliation: Department of Ophthalmology, Van Training and Research Hospital, Van, Turkey.
authors.forename: Eyyup
authors.initials: E
authors.lastname: Karahan
authors.affiliation: Department of Ophthalmology, Bozyaka Training and Research Hospital, Saim Cıkrıkcı cad. no : 59 Bozyaka, Izmir, Turkey. kartiomer@gmail.com.
authors.forename: Omer
authors.initials: O
authors.lastname: Karti
authors.affiliation: Department of Neurology, Bozyaka Training and Research Hospital, Saim Cıkrıkcı cad. no : 59 Bozyaka, Izmir, Turkey.
authors.forename: Aslı
authors.initials: A
authors.lastname: Koskderelioglu
authors.affiliation: Department of Neurology, Bozyaka Training and Research Hospital, Saim Cıkrıkcı cad. no : 59 Bozyaka, Izmir, Turkey.
authors.forename: Dilek Top
authors.initials: DT
authors.lastname: Karti
authors.affiliation: Department of Ophthalmology, Sifa University, Izmir, Turkey.
authors.forename: Murat
authors.initials: M
authors.lastname: Uyar
authors.affiliation: Department of Neurology, Sifa University, Izmir, Turkey.
authors.forename: Murat Yildirim
authors.initials: MY
authors.lastname: Kale
authors.affiliation: Department of Neurology, Bozyaka Training and Research Hospital, Saim Cıkrıkcı cad. no : 59 Bozyaka, Izmir, Turkey.
authors.forename: Muhtesem
authors.initials: M
authors.lastname: Gedizlioglu
mesh_terms: D000328:Adult; D005074:Evoked Potentials, Visual / Q000502:physiology; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D009103:Multiple Sclerosis / Q000503:physiopathology*; D011680:Pupil; D041623:Tomography, Optical Coherence; D058609:Visual Field Tests; D014795:Visual Pathways / Q000503:physiopathology*; D055815:Young Adult
keywords: Multiple sclerosis; Optical coherence tomography; Pupil cycle time; Visual evoked potential