With reference to defects of vision, consider the following statements: 1. A person with Myopia can see nearby objects clearly but cannot see distant objects distinctly. 2. This defect may arise due to excessive curvature of the eye lens. Which of the statements given above is/are correct?
With reference to defects of vision, consider the following statements: 1. A person with Myopia can see nearby objects clearly but cannot see distant objects distinctly. 2. This defect may arise due to excessive curvature of the eye lens. Which of the statements given above is/are correct? Correct Answer Both 1 and 2
The correct answer is Both 1 and 2.
Key Points
- At sometimes eye slowly loses its power of accommodation, which tends to blur the vision due to the refractive defects of the eye.
- There are generally 3 common refractive defects of vision:
- Myopia (nearsightedness)
- Hypermetropia (farsightedness)
- Presbyopia
Important Points
- A person with Myopia can see nearby objects clearly, but cannot see distant objects distinctly. Hence statement 1 is correct.
- A person with Myopia has the far point nearer than infinity.
- Myopia may arise due to excessive curvature of the eye lens or elongation of the eyeball. This can be cured by using a concave lens of the required power. Hence statement 2 is correct.
- A person with Hypermetropia can see distant objects clearly but cannot see nearby objects distinctly.
- Hypermetropia may arise due to the longevity of the focal length of the eye lens or the eyeball has become too small. This can be cured by using a convex lens of the required power.
- Presbyopia arises due to the gradual weakening of the ciliary muscles and diminishing flexibility of the eye lens. It can be cured by using the bi-focal lens of the required power.
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Feb 20, 2025