Eye Parts and Functions

Front

What is the vitreous humor?

Back

The vitreous humor is a clear gel-like substance that fills the space between the lens and the retina in the eye. It helps maintain the shape of the eye and provides support to the retina.

Front

What is the function of the optic nerve?

Back

The optic nerve transmits visual information from the retina to the brain, allowing us to see.

Front

What does it mean when light rays converge on the retina?

Back

When light rays converge on the retina, it means that the light is focused correctly, allowing for clear vision, which is referred to as normal vision.

Front

What is the lens of the eye?

Back

The lens is a transparent structure in the eye that helps focus light onto the retina. It changes shape to adjust focus for near or distant objects.

Front

What happens to the pupil in dim light?

Back

In dim light, the pupil dilates (enlarges) to allow more light to enter the eye, improving visibility.

Front

What is the role of the cornea?

Back

The cornea is the clear, dome-shaped surface that covers the front of the eye. It helps to focus light as it enters the eye.

Front

What is the retina?

Back

The retina is a layer of light-sensitive cells at the back of the eye that converts light into electrical signals sent to the brain.

Front

What is nearsightedness?

Back

Nearsightedness, or myopia, is a condition where close objects are seen clearly, but distant objects appear blurry because light rays focus in front of the retina.

Front

What is farsightedness?

Back

Farsightedness, or hyperopia, is a condition where distant objects are seen clearly, but close objects appear blurry because light rays focus behind the retina.

Front

What is the function of the iris?

Back

The iris is the colored part of the eye that controls the size of the pupil and the amount of light that enters the eye.