Retinal Neuro-vascular Coupling in Patients With Non-arteritic Anterior Ischemic Optic Neuropathy

Inclusion criteria for healthy subjects:

• Men and women aged over 18 years
• Non-smokers
• Normal findings in the medical history unless the investigator considers an abnormality to be clinically irrelevant
• Normal ophthalmic findings, ametropy \< 6 Dpt.

Inclusion criteria for patients with NAION:

• Men and women aged over 18 years
• History of NAION in one eye
• Normal ophthalmic findings, ametropy \< 6 Dpt.
• Adequate visual acuity to allow participation in the ocular blood flow measurements
• A potential participant has to be on stable doses of all medications he/she is taking because of consisting illnesses according to medical history for at least 30 days prior inclusion, if considered relevant by the investigator.

Any of the following will exclude a healthy subject from the study:

• Current ocular disease or history of NAION
• Presence or history of a severe medical condition as judged by the clinical investigator
• Untreated Arterial hypertension
• History or family history of epilepsy
• Presence of any abnormalities preventing reliable measurements in the study eye as judged by the investigator
• Best corrected visual acuity \< 0.5 Snellen
• Ametropy ≥ 6 Dpt
• Pregnancy or planned pregnancy
• Alcoholism or substance abuse

Any of the following will exclude a patient from the study:

• Presence or history of a severe medical condition other NAION as judged by the clinical investigator
• Untreated Arterial hypertension
• History or family history of epilepsy
• Presence of any abnormalities preventing reliable measurements in the study eye as judged by the investigator
• Best corrected visual acuity \< 0.5 Snellen in the non-affected eye
• Ametropy ≥ 6 Dpt
• Pregnancy, planned pregnancy
• Alcoholism or substance abuse