A nurse is educating a group of nursing students about the functions of various parts of the eye. Which of the following statements correctly match the part of the eye with its function? (Select all that apply)

Iris - Controls the amount of light entering the eye by adjusting pupil size.

Lens - Adjusts shape to focus light on the retina for clear vision.

Eyelids - Protect the eye by keeping it moist and shielding it from foreign substances.

Sclera - Focuses light onto the retina by changing curvature.

Optic nerve - Provides nutrients to the eye's lens and cornea.

Retina - Contains photoreceptors that convert light into nerve signals.

Cornea - Protects the eye and helps focus light onto the retina.