Eyes & Vision

Front

What is the function of the cornea in the eye?

Back

The cornea helps to focus light onto the retina and provides protection to the inner parts of the eye.

Front

What is the role of the lens in the eye?

Back

The lens adjusts its shape to focus light onto the retina, allowing for clear vision at different distances.

Front

What is the purpose of the pupil in the eye?

Back

The pupil regulates the amount of light that enters the eye, getting larger in low light conditions and smaller in bright light.

Front

What is the retina and what is its function?

Back

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

Front

What is the optic nerve and what does it do?

Back

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

Front

What are common vision problems that can affect the eye?

Back

Common vision problems include myopia (nearsightedness), hyperopia (farsightedness), astigmatism, and presbyopia.

Front

How does the eye adapt to darkness?

Back

In darkness, the pupil dilates (gets bigger) to allow more light to enter the eye, enhancing night vision.

Front

What is the difference between the cornea and the lens?

Back

The cornea is the outermost layer that provides initial light refraction, while the lens is flexible and fine-tunes the focus of light onto the retina.

Front

What is the significance of the fovea in the retina?

Back

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

Front

What are photoreceptors and what types are found in the retina?

Back

Photoreceptors are specialized cells in the retina that detect light; the two main types are rods (for low light) and cones (for color vision).