Assertion: albinism's pigment | /r/CapableOf | lend opacity
Facets:
Source sentences:
text: The human eye normally produces enough pigment to color the iris blue, green or brown and lend opacity to the eye.
text: In humans this is rarely the case, as a human eye is quite large and thus produces enough pigment to lend opacity to the eye.
text: In humans this is rarely the case, as a human eye is quite large and thus produces enough pigment to lend opacity to the eye, often colouring the iris pale blue.