Instead of light rays focusing directly on the retina in the back of the eye, the flatter curvature of the cornea causes light rays entering the eye to focus behind the retina.
(light rays; focusing directly; on the retina in the back of the eye) (the flatter curvature of the cornea; causes; light rays entering the eye) (light rays; entering; the eye; to focus behind the retina)
light rays the flatter curvature of the cornea light rays
focusing directly causes entering
on the retina in the back of the eye
light rays entering the eye
the eye to focus behind the retina