1. In this experiment, if you observe light rays converging in front of the retina, this represents:
- A. Normal Vision
- B. Myopia
- C. Hyperopia
- D. Presbyopia
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Vision Correction - Quiz
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In this experiment, if you observe light rays converging in front of the retina, this represents:
Vision Correction - Quiz - Quiz Questions
Test your mastery of the causes of myopia and hyperopia and their correction principles through the following exercises.
2. What kind of lens is needed to correct myopia?
- A. Convex Lens
- B. Concave Lens
- C. Plane Mirror
- D. Prism
3. Hyperopia is mainly caused by the lens being too thin and having weak refractive power, or:
- A. The eyeball is too long in the anterior-posterior direction
- B. The eyeball is too short in the anterior-posterior direction
- C. The retina has detached
- D. The external light is too strong
4. The order of the entire light path for vision formation is:
- A. Cornea → Pupil → Lens → Retina
- B. Retina → Lens → Cornea
- C. Lens → Pupil → Brain
- D. Cornea → Vitreous Body → Retina → Lens
5. True or False: Wearing glasses for hyperopia caused by presbyopia (convex lenses) can ignite paper scraps like a magnifying glass in the sunlight.
- True
- False
6. A myopia patient enters a prescription of $-300$ degrees (i.e., $-3.0D$). What is the focal length of this lens?
- A. $3.0m$
- B. $0.33m$ (approx. $33cm$)
- C. $-0.33m$ (approx. $-33cm$)
- D. $30cm$
7. In the simulation experiment, to observe the cause of myopia, the correct operation order is:
- A. Enable corrective lens first, then switch to myopia mode
- B. Switch to myopia mode first, observe focal position, then enable corrective lens
- C. Directly adjust lens power, observe focal movement
- D. Enable corrective lens in normal vision mode
8. The correction principle of contact lenses is the same as that of framed glasses, but the visual effect of contact lenses is closer to natural vision. The main reason is:
- A. The lens power of contact lenses is more accurate
- B. Contact lenses fit directly on the cornea, reducing edge distortion and field of view limitations
- C. Contact lenses can change the physiological structure of the eyeball
- D. Contact lenses use materials with a higher refractive index
9. True or False: Presbyopia patients need reading glasses for looking at near objects, and also need another pair of glasses for looking at distant objects.
- True
- False
10. Hyperopia and presbyopia both use convex lenses for correction, but how are their causes different?
- A. Hyperopia is the eyeball being too long, presbyopia is the lens being too thin
- B. Hyperopia is the eyeball being too short or lens having weak refractive power, presbyopia is the decrease in lens elasticity
- C. Hyperopia is the excessive curvature of the cornea, presbyopia is retinal degeneration
- D. The causes are exactly the same, only the onset age is different