Is Migraine a Risk Factor for Non-Arteritic Anterior Ischemic Optic Neuropathy? Insights from a National Case-Control...

Area of Science:

• Ophthalmology
• Neurology
• Vascular Medicine

Background:

• Migraine is associated with increased cerebrovascular risk.
• The link between migraine and non-arteritic anterior ischemic optic neuropathy (NAION) is not well-established.
• Understanding this association can inform risk stratification and management.

Purpose of the Study:

• To investigate the association between migraine and NAION.
• To compare the prevalence and clinical characteristics of NAION in patients with and without a history of migraine.
• To identify factors influencing NAION onset in migraineurs.

Main Methods:

• Retrospective case-control study using population-based electronic medical records.
• Comparison of NAION cases (n=1629) with propensity score-matched controls (n=6433).
• Analysis of migraine prevalence, clinical characteristics, and comorbidities.

Main Results:

• Migraine prevalence was similar in NAION patients and controls (3.8% vs. 3.3%).
• Migraineurs with NAION were younger and had lower rates of diabetes and peripheral vascular disease.
• Female migraineurs developed NAION at a significantly younger age than non-migraineurs (60 vs. 69 years).
• Congestive heart failure was more prevalent in migraine patients who developed NAION (9.7% vs. 2.4%).
• Migraine was independently associated with younger age at NAION onset, especially in patients under 59.

Conclusions:

• Migraine is not associated with a higher prevalence of NAION.
• Female migraineurs experience NAION at an earlier age and with fewer vascular comorbidities.
• The increased prevalence of congestive heart failure in migraineurs with NAION suggests a potential role for systemic hypoperfusion.