Sight Problems

Question 1

What do converging lenses do?

Answer 1

They bend rays of light towards one another; bringing them to a point

Question 2

What do diverging lenses do?

Answer 2

They bend rays of light away from each other

Question 3

What is longsightedness?

Answer 3

‘Long-sighted’ people can focus on distant objects but not near ones

Question 4

What is shortsightedness?

Answer 4

‘Short-sighted’ people can focus on close objects but not distant ones

Question 5

What do converging lenses look like?

Answer 5

They are thick in the middle

Question 6

What do diverging lenses look like?

Answer 6

They are thin in the middle

Question 7

What are the symptoms and causes of shortsightedness?

Answer 7

A Shortsighted person may have eye balls that are too long, or eye lenses that are too powerful even when the muscles are relaxed. A person who is short sighted can focus on close objects but not distant ones.

Question 8

What are the symptoms and causes of longsightedness?

Answer 8

A long sighted person may have eye balls that are too short, or eye lenses that are not powerful enough. This often happens as we get older and the lens does not bend enough. A person with long sight can focus on distant objects but not close ones