Exploring the Human Eye and Color

What are the main parts of the human eye?

• Cornea, lens, retina, iris, pupil, optic nerve

• Eyelid, eyelashes, tear duct

• Cornea, lens, eardrum

• Sclera, conjunctiva, vitreous humor

How does light enter the eye?

• Light is absorbed directly by the retina without passing through any structures.

• Light enters the eye only through the lens and bypasses the cornea.

• Light enters the eye through the cornea, pupil, and lens to reach the retina.

• Light enters the eye through the sclera and iris.

What is the function of the cornea?

• The cornea refracts light and protects the eye.

• The cornea produces tears for lubrication.

• The cornea regulates blood flow in the eye.

• The cornea absorbs light to enhance vision.

What role does the lens play in vision?

• The lens focuses light onto the retina.

• The lens regulates the temperature of the eye.

• The lens produces images for the brain to interpret.

• The lens absorbs light before it reaches the retina.

Explain how light is refracted in the eye.

• Light is refracted by the iris and not the cornea.

• The lens only reflects light without refracting it.

• Light is refracted by the cornea and lens to focus on the retina.

• Light is absorbed by the retina and does not refract.

What is the visible spectrum?

• The visible spectrum is the range of electromagnetic waves that includes radio waves.

• The visible spectrum is the range of sound frequencies audible to the human ear.

• The visible spectrum refers to the colors of the rainbow that are invisible to the eye.

• The visible spectrum is the range of light wavelengths visible to the human eye.

How do cones and rods differ in the eye?

• Cones detect motion; rods detect static images.

• Cones are for color and bright light; rods are for low light and peripheral vision.

• Cones are for low light and peripheral vision; rods are for color and bright light.

• Rods are more concentrated in the fovea; cones are distributed throughout the retina.

What is color blindness and how does it occur?

• Color blindness is a condition where individuals see only in black and white.

• Color blindness is a rare condition that affects only women.

• Color blindness is a condition where individuals have difficulty distinguishing certain colors, primarily due to genetic factors affecting cone cells in the retina.

• Color blindness is caused by exposure to bright light during childhood.

Name a common eye disease that affects vision.

• Astigmatism

• Macular degeneration

• Cataracts

• Glaucoma

What is the function of the retina?

• To focus light onto the lens.

• To protect the eye from dust and debris.

• To regulate the amount of light entering the eye.

• The function of the retina is to convert light into neural signals for vision.