Comparison between the classic symptoms of visual loss in amaurosis fugax and UGH syndrome
| Amaurosis fugax | UGH syndrome | |
|---|---|---|
| Speed of onset | Sudden (seconds) | Gradual (minutes) |
| Character of onset | Dark curtain passing across visual field | Gradual misting of vision ± erythropsia |
| Recovery | Rapid (seconds to minutes) | Slow (hours to days) |
| Complete loss of light perception | Present in at least one sector of visual field | Never present |
| Associated pain | None | ± Ache in affected eye |