Assertion: cataract's lens | /r/CapableOf | block light
Facets:
value: due to proteins
type: CAUSE
value: to the retina
type: TRANSITIVE-OBJECT
Source sentences:
text: The lens becomes cloudy, blocking light to the retina due to proteins building up within the lens.
text: At some point, the maturing lens begins to opacify, blocking and scattering the light entering the eye.