The Eye: Structure and Function

Front

What is the function of the retina in the eye?

Back

The retina converts light waves into electrical signals that the brain uses to understand what it is seeing.

Front

What is the role of the sclera in the structure of the eye?

Back

The sclera supports the eyeball, helps keep its shape, and provides attachment for movement muscles.

Front

What does the pupil do in the eye?

Back

The pupil regulates the amount of light that enters the eye.

Front

What is the optic nerve's function?

Back

The optic nerve carries electrical signals from the retina to the brain.

Front

What are the main layers of the eye?

Back

The main layers of the eye are the sclera, choroid, and retina.

Front

How does the eye focus light?

Back

The eye focuses light using the cornea and the lens, which adjust the light's path to focus on the retina.

Front

What is the difference between the cornea and the lens?

Back

The cornea is the transparent front part of the eye that refracts light, while the lens is a flexible structure that fine-tunes the focus.

Front

What is the function of the iris?

Back

The iris controls the size of the pupil and thus the amount of light that enters the eye.

Front

What is the significance of the fovea in the retina?

Back

The fovea is the area of the retina responsible for sharp central vision and is densely packed with cone cells.

Front

What are rod cells and cone cells?

Back

Rod cells are photoreceptors that detect light intensity and are responsible for night vision, while cone cells detect color and are responsible for daylight vision.