title: Intraocular pressure and ocular biometric parameters changes in migraine.
abstract: BACKGROUND
  The aim of this study was to assess the intraocular pressure and ocular biometric parameters in migraine patients during acute migraine attacks and compare them with painless period and healthy controls using a new optical biometer AL-Scan.
  
  
  METHODS
  In this prospective, case-control study, the axial length, corneal curvature radius, anterior chamber depth, central corneal thickness, and pupil size of 40 migraine patients during acute migraine attacks and painless period and 40 age- and sex-matched healthy subjects were measured using a AL-Scan optical biometer (Nidek Co., Gamagori, Japan). All patients underwent a complete ophthalmic examination before the measurements. IOP and biometer measurements were taken at the same time of day (10:00-12:00) in order to minimize the effects of diurnal variation.
  
  
  RESULTS
  There was not a statistically significant difference in intraocular pressure between the migraine patients during acute migraine attacks (15.07 mmHg), painless period (14.10 mmHg), and the controls (15,73 ± 0,81). Also, the ocular biometric parameters did not significantly vary during the acute migraine attacks.
  
  
  CONCLUSIONS
  Further studies are needed to evaluate the etiopathologic relationship between intraocular pressure and ocular biometric parameters and acute migraine attack.
authors.affiliation: Department of Ophthalmology, Faculty of Medicine, University of Kafkas, Kars, Turkey. yarankoban@yahoo.com.au.|Kafkas University Medical School, Merkez, 36100, Kars, Turkey. yarankoban@yahoo.com.au.
authors.forename: Yaran
authors.initials: Y
authors.lastname: Koban
authors.affiliation: Department of Neurology, Edirne State Hospital, Edirne, Turkey.
authors.forename: Hatice Kose
authors.initials: HK
authors.lastname: Ozlece
authors.affiliation: Department of Ophthalmology, Hacettepe University Beytepe Health Center, Ankara, Turkey.
authors.forename: Gorkem
authors.initials: G
authors.lastname: Bilgin
authors.affiliation: Ophthalmology Department, Ulucanlar Eye Training and Research Hospital, Ankara, Turkey.
authors.forename: Mustafa
authors.initials: M
authors.lastname: Koc
authors.affiliation: Department of Ophthalmology, Faculty of Medicine, University of Kafkas, Kars, Turkey.
authors.forename: Halil Huseyin
authors.initials: HH
authors.lastname: Cagatay
authors.affiliation: Department of Ophthalmology, Faculty of Medicine, University of Kafkas, Kars, Turkey.
authors.forename: Emre I
authors.initials: EI
authors.lastname: Durgunlu
authors.affiliation: Department of Ophthalmology, Faculty of Medicine, University of Kafkas, Kars, Turkey.
authors.forename: Ayse
authors.initials: A
authors.lastname: Burcu
mesh_terms: D000328:Adult; D000867:Anterior Chamber / Q000473:pathology*; D058452:Axial Length, Eye / Q000473:pathology*; D016022:Case-Control Studies; D003315:Cornea / Q000473:pathology*; D005260:Female; D006801:Humans; D007429:Intraocular Pressure / Q000502:physiology*; D007908:Lens, Crystalline / Q000473:pathology*; D008297:Male; D008875:Middle Aged; D008881:Migraine Disorders / Q000473:pathology / Q000503:physiopathology; D011446:Prospective Studies; D011680:Pupil / Q000502:physiology
keywords: Anterior segment; Cornea; Headache; Miraine; Pain attack