Understanding the Human Eye and Vision

The video explains how the human sense of sight works, detailing the protective and vision-related parts of the eye. Protective parts include eyebrows, eyelids, eyelashes, and lacrimal glands, which help keep the eye clean and moist. Vision-related parts include the iris, pupil, eye lens, and retina, which process visual information and transmit it to the brain via the optic nerve. Tips for eye protection, such as wearing sunglasses, are also provided.

Which part of the eye is responsible for keeping it clean and moist?

• Pupil

• Retina

• Eyelids

• Iris

What is the function of the lacrimal glands?

• To focus light on the retina

• To control the amount of light entering the eye

• To clean the eye and remove germs

• To transmit visual information to the brain

Which part of the eye controls the amount of light that enters?

• Eyelashes

• Retina

• Iris

• Optic nerve

What role does the retina play in vision?

• It keeps the eye moist

• It controls the amount of light entering the eye

• It transmits light information to the brain

• It focuses light on objects

How does the optic nerve contribute to vision?

• It controls the size of the pupil

• It focuses light on the retina

• It keeps the eye clean

• It transmits visual information to the brain

What is a recommended way to protect your eyes during summer?

• Use sunscreen

• Stay indoors

• Wear a hat

• Wear sunglasses