Human Eye Defects

What is the near point of a normal human eye?

• 25 cm

• Infinity

• -25 cm

What is myopia?

• Near Sightedness

• Far sightedness

How can near sightedness be corrected?

• Using concave lens

• Using convex lens

• Using bifocal lens

How can hypermetropia be corrected?

• By using concave lens

• By using convex lens

• By using bifocal lens

Cause of myopia. (More than one answer)

• Large focal length

• Small focal length

• Low power

• High power

Cause of hypermetropia (More than one answer)

• Large focal length

• Small focal length

• Low power

• High power

The ability of our eyes to adjust its focal length is called

• Aperture

• Power of accomodation

• Adjustment

The far point of human eye is

• 25 cm

• Infinity

• 10,00,000 cm

A child is not able to read letters in the book clearly and has to keep the book far away to read it clearly. The child is suffering from

• Myopia

• Hypermetropia

• Presbyopia

A child is not able to read letters in the book clearly and has to keep the book far away to read it clearly. In this defect, the image is formed

• In front of retina

• On the retina

• Behind the retina