dc.contributor.author | Eshtayah, Hadil | |
dc.date.accessioned | 2012-09-04T14:25:10Z | |
dc.date.available | 2012-09-04T14:25:10Z | |
dc.date.issued | 2012-09-04 | |
dc.identifier.uri | http://hdl.handle.net/10222/15450 | |
dc.description.abstract | Purpose: To determine if patients with migraine show clinically apparent visual field deficits in the peripheral visual field compared to healthy controls.
Methods: Normal observers (n=25; mean age 41 y, range 15-67 y) and patients with migraine (n=12, mean age 48 y, range 21-55 y) were examined with a fully automated kinetic perimetry program (Octopus 900, Haag-Streit, Switzerland) on two separate study visits within two weeks. The program examined 3 isopters (I4e, I2e, I1e) at stimulus velocities of 5°, 4°, and 3°/s respectively. For every isopter, 12 stimulus vectors were presented at meridians spaced 30° apart, in random order, and each isopter was measured 3 times. Patients with migraine had been diagnosed by a neuro-opthalmologist according to criteria of the International Headache Society.
Results: Differences in mean isopter radius between migraine observers and healthy controls were small (< 1.3°) and not statistically significant (P>0.05, Mann-Whitney U). No learning or practice effects were observed between study visits, and AKP showed reasonable repeatability for all three isopters.
Conclusion: Patients with migraine did not demonstrate decreased peripheral visual fields in comparison to controls. This study had sufficient power (90%) to detect a group difference in mean isopter radius of approximately 2°. | en_US |
dc.language.iso | en | en_US |
dc.subject | Visual Fields, Migraine Patients, Octopus 900, Retest Variability | en_US |
dc.title | Central and Peripheral Visual Fields in Patients with Migraine | en_US |
dc.type | Thesis | en_US |
dc.date.defence | 2012-07-18 | |
dc.contributor.department | Department of Clinical Vision Science | en_US |
dc.contributor.degree | Master of Science | en_US |
dc.contributor.external-examiner | n/a | en_US |
dc.contributor.graduate-coordinator | Dr. Balwantray Chauhan | en_US |
dc.contributor.thesis-reader | Dr. C E Maxner | en_US |
dc.contributor.thesis-reader | Dr. P H Artes | en_US |
dc.contributor.thesis-reader | Dr. D Mitchell | en_US |
dc.contributor.thesis-supervisor | Dr. L Shuba | en_US |
dc.contributor.ethics-approval | Received | en_US |
dc.contributor.manuscripts | Not Applicable | en_US |
dc.contributor.copyright-release | Not Applicable | en_US |