Eye hue and the oculocardiac reflex

Area of Science:

• Ophthalmology
• Cardiology
• Genetics

Background:

• Oculocardiac reflex is a known phenomenon during ophthalmic surgery.
• Cardiac arrhythmias can occur during surgical procedures.
• Patient factors influencing intraoperative events require further investigation.

Purpose of the Study:

• To investigate the correlation between patient eye color and the occurrence of specific arrhythmias during squint surgery.
• To determine if eye color influences the frequency of the oculocardiac reflex during ophthalmic operations.

Main Methods:

• Observational study during ophthalmic surgeries.
• Categorization of patients based on eye color (brown/hazel vs. blue/grey).
• Monitoring and recording of cardiac arrhythmias and oculocardiac reflex events.

Main Results:

• Nodal rhythm, heart block, and multifocal ventricular extrasystoles were more frequent in patients with brown or hazel eyes.
• The oculocardiac reflex occurred more frequently in patients with brown or hazel eyes compared to blue or grey eyes.
• A statistically significant association was observed between brown/hazel eye color and increased incidence of cardiac events.

Conclusions:

• Eye color may be a predictive factor for intraoperative cardiac events during squint surgery.
• Patients with brown or hazel eyes may be at higher risk for arrhythmias and oculocardiac reflex.
• Further research is warranted to elucidate the underlying mechanisms linking eye color and cardiac autonomic regulation.