Assertion: pigeon's bird | /r/HasAspect | eye
Facets:
value: relative to the corneal diameter
type: OTHER
value: to give greater visual acuity
type: PURPOSE
value: in proportion to body size
type: OTHER
Source sentences:
text: Birds of prey have eyes 1.4 larger than those of an average bird (in proportion to body size).
text: Nocturnal birds have eyes optimised for visual sensitivity, with large corneas relative to the eye's length, whereas diurnal birds have longer eyes relative to the corneal diameter to give greater visual acuity.
text: Nocturnal birds have eyes optimised for visual sensitivity, with large corneas relative to the eye's length, whereas diurnal birds have longer eyes relative to the corneal diameter to give greater visual acuity.