Understanding Cataracts

The video explains cataracts, a condition where the eye's lens becomes cloudy, affecting vision. Cataracts are often age-related. The lens, located behind the iris and pupil, focuses light onto the retina, which converts it into nerve signals for the brain. The lens is mostly water and protein, arranged to allow light to pass without distortion. Aging causes proteins to clump, forming cataracts, which cloud the lens and blur vision.

What is a cataract primarily related to?

• Infection

• Genetic disorders

• Aging

• Injury to the eye

What part of the eye is responsible for focusing light on the retina?

• Iris

• Lens

• Pupil

• Cornea

What is the main function of the lens in the eye?

• To detect light

• To adjust the eye's focus

• To produce tears

• To protect the retina

What are the primary components of the lens?

• Fat and carbohydrates

• Blood and tissue

• Water and protein

• Minerals and vitamins

How are proteins in the lens arranged to allow light to pass through?

• In layers

• In clusters

• In a precise way

• Randomly

What happens to the proteins in the lens as we age?

• They clump together

• They become transparent

• They become more flexible

• They dissolve

What visual symptoms might indicate the presence of a cataract?

• Complete blindness

• Blurry vision and faded colors

• Increased night vision

• Double vision