Light — Human Eye and Vision

Grade 8 Science — Light — Human Eye and Vision: 25 practice questions with instant scoring and explanations.

1. The cornea of the eye is:
2. The iris is responsible for:
3. The pupil appears to change size because:
4. The lens of the eye becomes:
5. The retina contains:
6. The blind spot of the eye is the region where:
7. Color blindness is often due to:
8. Myopia (short-sightedness) is corrected using:
9. Hypermetropia (long-sightedness) is corrected using:
10. The accommodation of the eye allows:
11. Astigmatism is caused by:
12. Presbyopia is a defect of vision that:
13. Braille is a system of:
14. In Braille, each character is represented by:
15. The lens of a healthy eye is:
16. Rods in the retina are responsible for:
17. Cones in the retina are most active:
18. The aqueous humor is located:
19. Cataract is a condition where:
20. When focusing on a nearby object, the ciliary muscles:
21. The fovea is the region of the eye:
22. The white part of the eye is called:
23. Light enters the eye first through:
24. In low light, the pupil:
25. The optic nerve transmits: