Also, lights at night may streak out from the source, with annoying streamers appearing around oncoming headlights or ...

Astigmatism affects about one in three Americans and it occurs more frequently as you age. The condition becomes more noticeable at night due to the contrast between dark and light. Astigmatism is ...

Pathophysiologically, astigmatism results from asymmetry, typically in the anterior cornea, but it can also be caused by the posterior cornea or lens. [1] The asymmetry means that light is focused ...