Focuses light onto retina?

Focuses light onto retina?

• A. Lens
• B. Cornea
• C. Pupil
• D. Aqueous humor

Answer: (A)

The lens is the structure that focuses light onto the retina. It sits behind the iris and, together with the cornea, helps form a sharp image on the layer of light-sensitive cells at the back of the eye. The cornea provides most of the eye’s refractive power, bending incoming light at the front of the eye, while the lens fine-tunes that focus to make the image crisp on the retina. The lens can change its shape through accommodation, allowing clear vision of objects at various distances. The pupil is simply the opening that controls how much light enters; it doesn’t focus light. Aqueous humor is the clear fluid in the anterior chamber that nourishes eye tissues and helps maintain pressure, not involved in focusing light.

The lens is the structure that focuses light onto the retina. It sits behind the iris and, together with the cornea, helps form a sharp image on the layer of light-sensitive cells at the back of the eye. The cornea provides most of the eye’s refractive power, bending incoming light at the front of the eye, while the lens fine-tunes that focus to make the image crisp on the retina. The lens can change its shape through accommodation, allowing clear vision of objects at various distances. The pupil is simply the opening that controls how much light enters; it doesn’t focus light. Aqueous humor is the clear fluid in the anterior chamber that nourishes eye tissues and helps maintain pressure, not involved in focusing light.