quiz

Human Eye

1. The human eye has a specific type of lens known as:

  • A) Convex lens
  • B) Concave lens
  • C) Bifocal lens
  • D) Spherical lens
A) Convex lens Explanation

2. What is the range of light that the human eye can see?

  • A) 100–400 nanometers
  • B) 380–700 nanometers
  • C) 700–1000 nanometers
  • D) 1000–1500 nanometers
B) 380–700 nanometers Explanation

3. Which enzyme is found in human tears?

  • A) Collagenase
  • B) Hemoglobinase
  • C) Lysozyme
  • D) Amylase
C) Lysozyme Explanation

4. Which type of cells in the human eye are responsible for color vision?

  • A) Rod cells
  • B) Cone cells
  • C) Bipolar cells
  • D) Ganglion cells
B) Cone cells Explanation

5. How soon should the eyes be removed after death for donation?

  • A) Within 24 hours
  • B) Within 12 hours
  • C) Within 6-10 hours
  • D) Within 4-6 hours
D) Within 4-6 hours Explanation

6. The human eye is situated in a bony cavity called:

  • A) The orbit
  • B) The cranium
  • C) The alveolus
  • D) The phalanges
A) The orbit Explanation

7. What is the primary protection of the eye?

  • A)  Retina
  • B) Cornea
  • C) Eyelids
  • D) Optic Nerve
C) Eyelids Explanation

8. What part of the eye controls the size of the pupils? 

  • A) The lens
  • B) The cornea
  • C)  The iris
  • D) The optic nerve
C) The iris Explanation

9. Which type of cells in the human eye transmit visual information to the brain?

  • A)  Rod cells
  • B) Cone cells
  • C) Bipolar cells
  • D) Ganglion cells
D) Ganglion cells Explanation

10. Which part of the eye is commonly referred to as the “yellow spot” ?

  • A) Cornea
  • B) Pupil
  • C) Lens
  • D) Fovea
D) Fovea Explanation

11. What is the primary pigment responsible for giving color to the eyes?

  • A) Melatonin
  • B) Melanin
  • C) Carotene
  • D) Hemoglobin
B) Melanin Explanation

12. Light energy enters the eye through the: 

  • A) Retina
  • B) Pupil
  • C) Optic nerve
  • D) Cornea
D) Cornea Explanation

13. Which part of the human eye is responsible for producing tears?

  • A) Cornea
  • B) Lacrimal Gland
  • C) Pupil
  • D) Retina
B) Lacrimal Gland Explanation

14. Farsightedness is also called: 

  • A) Cataract
  • B) Presbyopia
  • C) Myopia
  • D) Hyperopia
D) Hyperopia Explanation

15. In which part of the human eye are cones and rods located? 

  • A) Corne
  • B) Lens
  • C) Pupil
  • D) Retina
D) Retina Explanation

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