Question

In order for a person to "see" an object, light waves pass through the ___________.
cornea
iris
lens
retina

Answer 1

The eye is a type of lens, which is supported by the it must pass through the iris (aperture) and then onto photocells which travel down the retina.

Answer 2

"The vertebrate retina (/ˈrɛtɪnə/ ret-nuh, pl. retinae, /ˈrɛtiniː/; from Latin rēte, meaning "net") is a light-sensitive layer of tissue, lining the inner surface of the eye. The optics of the eye create an image of the visual world on the retina (through the cornea and lens) , which serves much the same function as the film in a camera. Light striking the retina initiates a cascade of chemical and electrical events that ultimately trigger nerve impulses. These are sent to various visual centres of the brain through the fibres of the optic nerve."
http://en.wikipedia.org/wiki/Retina

Answer 3

its cornea