It refracts the light entering the eye onto the lens , which then focuses it onto the retina .
(It; refracts; the light entering the eye onto the lens ,) (the light; entering; the eye; onto the lens) (the lens; focuses; it; onto the retina; T:then)
It the light the lens
refracts entering focuses
the light entering the eye onto the lens ,
the eye onto the lens
it onto the retina T:then