Abnormal activation in the visual cortex after corneal refractive surgery for myopia: demonstration by functional magnetic resonance imaging.

Détails

ID Serval
serval:BIB_8FC2937B726A
Type
Article: article d'un périodique ou d'un magazine.
Collection
Publications
Titre
Abnormal activation in the visual cortex after corneal refractive surgery for myopia: demonstration by functional magnetic resonance imaging.
Périodique
Ophthalmology
Auteur(s)
Malecaze F.J., Boulanouar K.A., Demonet J.F., Guell J.L., Imbert M.A.
ISSN
0161-6420 (Print)
ISSN-L
0161-6420
Statut éditorial
Publié
Date de publication
2001
Peer-reviewed
Oui
Volume
108
Numéro
12
Pages
2213-2218
Langue
anglais
Notes
Publication types: Case Reports ; Journal ArticlePublication Status: ppublish. PDF type: Orginal research article
Résumé
OBJECTIVE: To try to correlate subjective photophobic symptoms with visual pathway modifications (from the retinal image to the visual cortex) after refractive surgery by exploring brain activation on photic stimulation.
DESIGN: Noncomparative case series.
PARTICIPANTS: Four subjects reporting discomfort produced by luminance (glare, halos, starbursts, or a combination thereof) in one eye after laser in situ keratomileusis (LASIK) were enrolled. The contralateral myopic eye (control) had no visual impairment and had undergone LASIK without complications or had not had previous surgery.
METHODS: Functional magnetic resonance imaging was performed during photic stimulation, delivered by an optical fiber, of the affected and unaffected eyes.
RESULTS: Functional magnetic resonance imaging provided evidence that most subjective visual symptoms correlated with anatomic flap abnormalities are associated with a higher signal increase in the visual association cortices compared with a nonsymptomatic eye.
CONCLUSIONS: Functional magnetic resonance imaging of the visual cortex may help in exploring the mechanisms involved in glare effects after refractive surgery.
Mots-clé
Adult, Cornea/surgery, Female, Humans, Keratomileusis, Laser In Situ/adverse effects, Magnetic Resonance Imaging, Male, Middle Aged, Myopia/surgery, Photophobia/diagnosis, Photophobia/etiology, Retina/physiopathology, Visual Cortex/pathology, Visual Cortex/physiopathology, Visual Pathways/physiopathology
Pubmed
Web of science
Création de la notice
24/03/2013 18:28
Dernière modification de la notice
03/03/2018 19:22
Données d'usage