Assertion: astigmatism's eye | /r/CapableOf | focus image
Facets:
value: at different distances
type: TEMPORAL
value: in front of the retina
type: LOCATION
value: on a single point
type: OTHER
Source sentences:
text: A normal eye focuses an image on a single point; optometrists draw an imaginary plus-sign (+) at the center of the pupil where this focus point should be.
text: The eyes of people who are nearsighted focus the image in front of the retina, while in those who are farsighted focus behind it.
text: Astigmatism, nonuniform curvature of the cornea (the transparent, dome-shaped tissue located in front of the iris and pupil) that causes the eye to focus images at different distances, depending on the orientation of light as it strikes the cornea.