Dissection: Eye

The video tutorial covers the dissection of a sheep's eye to explore its components and functions. It explains the roles of the sclera, cornea, iris, lens, retina, and optic nerve in vision. The tutorial also discusses common vision problems like myopia and hyperopia, and how laser eye surgery can correct these issues.

What is the purpose of the sclera in the sheep's eye?

• To focus light onto the retina

• To reflect light back through the retina

• To control the amount of light entering the eye

• To provide a tough exterior to protect the eye

Which part of the eye is responsible for controlling the size of the pupil?

• Cornea

• Retina

• Lens

• Iris

What is the function of the vitreous humor in the eye?

• To maintain the shape of the eye

• To protect the eye from external damage

• To control the size of the pupil

• To focus light onto the retina

How does the tapetum contribute to vision in some animals?

• By controlling the size of the pupil

• By maintaining the shape of the eye

• By reflecting light back through the retina

• By focusing light onto the retina

What causes myopia, or short-sightedness?

• The retina being detached

• The cornea being more curved than normal

• The cornea being too flat

• The lens being too thick

What is the purpose of laser eye surgery?

• To enlarge the pupil

• To detach the retina

• To reshape the cornea

• To remove the lens

Which condition is characterized by difficulty focusing on close objects?

• Hyperopia

• Myopia

• Presbyopia

• Astigmatism