Eye structure and function

Front

What is the function of the iris in the eye?

Back

The iris controls the size of the pupil and thus the amount of light that enters the eye, contributing to eye color.

Front

What is the role of the pupil in the eye?

Back

The pupil is the opening in the center of the iris that allows light to enter the eye.

Front

What is the optic nerve and its function?

Back

The optic nerve transmits visual information from the retina to the brain.

Front

What is the cornea and its protective role?

Back

The cornea is the transparent front layer of the eye that helps to focus light and protects the inner structures of the eye.

Front

What is the structure of the pupil and its appearance?

Back

The pupil is a black circular opening in the center of the iris.

Front

How does the iris affect vision in bright light conditions?

Back

In bright light, the iris constricts the pupil to reduce the amount of light entering the eye, protecting the retina.

Front

What happens to the pupil in low light conditions?

Back

In low light, the iris dilates the pupil to allow more light to enter the eye, improving visibility.

Front

What is the relationship between the optic nerve and vision?

Back

The optic nerve is crucial for vision as it carries signals from the retina to the brain, where they are interpreted as images.

Front

What are the layers of the eye that protect it?

Back

The eye is protected by several layers, including the cornea, sclera, and conjunctiva.

Front

What is the significance of the cornea's curvature?

Back

The curvature of the cornea helps to refract light and focus it onto the retina.