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What role does the optic nerve play in the visual system?
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The optic nerve connects the retina to the brain and transmits electrical signals for processing.
How do the cornea and the lens collaboratively function in vision?
The cornea and the lens work together to focus light onto the retina.
Where is the lens located within the eye?
The lens is located behind the iris and the cornea.
What is the aqueous humor, and what is its function?
The aqueous humor is a watery liquid filling the space between the cornea and the lens. It helps to maintain eye shape and refract light.
Explain the function of the vitreous humor.
The vitreous humor is a jelly-like substance between the lens and the retina that helps maintain the shape of the eye.
What is the function of the ciliary muscles in the eye?
The ciliary muscles change the shape of the lens to adjust its optical power, enabling accommodation.
Describe the role of the cornea in vision.
The cornea is the transparent front part of the eye that works with the lens to focus light.
How does the retina contribute to vision?
The retina is lined with light-sensitive cells that convert light into electrical signals, which are then sent through the optic nerve to the brain for image processing.
How does the eye maintain its shape, and what substance helps in this task?
The vitreous humor helps to maintain the shape of the eye.
What feature in the eye is responsible for image processing and converting light into signals to be sent to the brain?
This function is performed by the retina.
What is the primary functional purpose of the pupil?
The pupil allows light to enter the eye.
What part of the eye controls its color and regulates the size of the pupil?
The iris controls the eye color and regulates the size of the pupil.
What is the process called where the lens changes shape to focus on objects at different distances?
This process is known as accommodation.
What happens to the pupil in bright light and low light conditions?
In bright light, the pupil constricts to reduce light entry, whereas in low light, the pupil dilates to allow more light to enter.
What is the relationship between the optical power of the lens and the distance of the object being viewed?
For closer objects, the ciliary muscles bend the lens more to increase its optical power, whereas for distant objects, less bending is needed, resulting in lower optical power.
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