Eye Flashcards
(16 cards)
What is the function of the lens in the eye?
Focuses light onto the retina
The lens adjusts its shape to help focus on objects at various distances.
What are the two types of photoreceptor cells in the retina?
Rods and cones
Rods are responsible for vision in low light, while cones are responsible for color vision and detail.
What is the role of the cornea in the eye?
Protects and helps focus light entering the eye
The cornea is the transparent front part of the eye.
What is the vitreous humor?
A gel-like substance that fills the eye cavity
It maintains the shape of the eye and provides support to the retina.
What is the yellow spot in the eye known as?
Macula
The macula is responsible for central vision and color perception.
Fill in the blank: The _______ are responsible for vision in dim light.
Rods
What part of the eye contains the photoreceptor cells?
Retina
The retina is the layer of tissue at the back of the eye that detects light.
True or False: Cones are more sensitive to light than rods.
False
Rods are more sensitive to light, making them essential for night vision.
What is the primary function of the iris?
Controls the amount of light entering the eye
The iris adjusts the size of the pupil.
What is the role of the optic nerve?
Transmits visual information from the retina to the brain
The optic nerve is crucial for vision as it carries signals from the eye.
Fill in the blank: The _______ helps maintain the round shape of the eye.
Vitreous humor
What are the primary functions of the eye?
Vision and light detection
The eye allows us to perceive our surroundings through light.
What does the term ‘refraction’ refer to in the context of the eye?
Bending of light as it passes through the lens and cornea
Refraction is essential for focusing images on the retina.
What is the function of the sclera?
Provides structure and protection to the eye
The sclera is the white outer layer of the eyeball.
What is the function of the choroid layer in the eye?
Supplies blood to the retina
The choroid is the vascular layer between the retina and sclera.
What is the role of the pupil?
Regulates the amount of light entering the eye
The size of the pupil changes in response to light conditions.
