But when the cornea is scratched or clouded, the entire amazing human visual apparatus is useless: the finely machined iris adjusting the amount of light entering the eye;
(the cornea; is scratched; ) (the cornea; clouded; ) (the entire amazing human visual apparatus; is; useless; T:when the cornea is scratched or clouded) (the finely machined iris; adjusting; the amount of light) (light; entering; the eye)
the cornea the cornea the entire amazing human visual apparatus the finely machined iris light
is scratched clouded is adjusting entering
useless T:when the cornea is scratched or clouded
the amount of light
the eye