Assertion: astigmatism's symptom | /r/HasProperty | difficulty
Facets:
Source sentences:
text: Other symptoms can include difficulty seeing one colour against another (contrast), and distorted images, such as lines which lean to one side.
text: Other symptoms include difficulty of seeing at night, eye strain, squinting, irritation of the eye, and headaches.
text: Because the light coming into the eye does not reflect properly on the retina, astigmatism symptoms can include headaches, blurred vision, and difficulty reading or using a computer for long periods of time.