Assertion: glaucoma's vision | /r/HasProperty | poor
Facets:
value: very
type: DEGREE
Source sentences:
text: More serious problems include developing so low an eye pressure that vision is poor, requiring revision surgery to raise pressure.
text: If vision is very poor, some ophthalmologists may recommend a less invasive procedure such as a type of laser that destroys the ciliary body, the part of the eye that produces fluid.