Eye hue and the oculocardiac reflex.
During operations for squint nodal rhythm and other more serious arrhythmias such as heart block and multifocal ventricular extrasystoles, as well as the oculocardiac reflex, are shown to occur more frequently in patients with brown or hazel eyes than in patients with blue or grey eyes.
D000293:Adolescent; D001146:Arrhythmia, Sinus / Q000453:epidemiology; D001919:Bradycardia / Q000453:epidemiology; D005117:Cardiac Complexes, Premature / Q000453:epidemiology; D002648:Child; D005127:Eye Color; D006801:Humans; D012018:Reflex; D012024:Reflex, Oculocardiac; D013285:Strabismus / Q000601:surgery