Atherosclerosis risk factors, especially hypertension, diabetes |
Small optic cup, "disc at risk" |
Surgery
|
Major blood loss from other causes (eg, trauma, gastrointestinal bleeding) |
Prothrombotic conditions |
Nocturnal hypotension |
Sleep apnea |
Kidney failure |
Drugs
|
Migraine |
Carotid dissection |
Genetic factors |