Assertion: strabismus's vision | /r/HasProperty | decreased
Facets:
value: permanently
type: MANNER
Source sentences:
text: If left untreated, strabismus may result in decreased vision or irreversible eye damage.
text: Surgery is used to help re-establish binocular single vision (decrease diplopia), increase stereoacuity, improve ocular strain related to intermittent deviations, decrease visual confusion, improve abnormal head posture and restore peripheral visual field.  
text: Often called lazy eye, amblyopia occurs when the brain shuts off the image in one eye long enough that the vision is permanently decreased.