Hypermetropia and Its Correction

Q.

Statement 1: Hypermetropia is corrected by use of convex lens

Statement 2: The eye lens has to become thick so that it Hypermetropia (hyperopia) also known as farsightedness is a common type of refractive error where distant objects may be seen more clearly than objects that are near is able to bend light coming from a nearby object even more so as to form image at retina itself which a hypermetropic eye is unable to do so we place an extra convex lens which assists the eye lens in further convergence of light.

1. Statement 1 and 2 are correct but statement 2 is not the correct reason of statement 1

2. Both statements are wrong

3. Statement 1 is correct but statement 2 is incorrect.

4. Statement 1 and 2 are correct and statement 2 is the correct reason for statement 1

Q.

Hypermetropia is rectified by using

1. Convex lens

2. Concave lens

3. Cylindrical lens

4. Progressive lens

Q.

A man driving a car can read a distant road sign clearly but finds difficulty in reading the odometer on the dashboard of the car. Which of the following is a correct statement?

1. The near point of his eyes has come close to him

2. The near point of his eyes has receded away

3. The far point of his eyes has come close to him

4. The far point of his eyes has receded away

Q.

The time of retention of image in the eye is called _____________.

Q.

What kind of lens is used to correct hypermetropia?

1. Convex

2. Concave

3. Plano concave

4. Cylinderical

Q.

After testing the eyes of a child, the optician has prescribed the following lenses for his spectacles: Left eye: = +2.00 D and Right eye = +2.25 D. The child is suffering from the defect of vision called:

1. Myopia

2. Presbyopia

3. Astigmatism

4. Hypermetropia

Q.

The near point of a hypermetropic eye is 1 m, what is the power of the lens required to correct this defect? (Assuming that the near point of a normal eye is 25 cm)

1. $+3D$

2. $-3D$

3. $+4D$

4. $-4D$

Q.

The minimum distance up to which a long-sighted person can see is called

1. Near point

2. Far point

3. End point

4. None of these

Q.

The retina of the human eye retains image only up to

1. $\frac{1}{100}s$

2. $\frac{1}{50}s$

3. $\frac{1}{20}s$

4. none of these

Q. A person can see clearly objects only when they lie between 50cm and 400cm from his eyes. In order to increase the maximum distance of distinct vision to infinity, the type and power of the correcting lens, the person has to use will be

Q. The cause of hypermetropia is a/an in focal length of the eye lens and of the eyeball.

1. elongation
2. increase
3. decrease
4. shortening

Q.

If a person can see distant objects clearly, but cannot see nearby objects clearly, then the person is said to be affected from which of the following defect/s :

1. Presbyopia

2. Shortsightedness

3. Both a and c

4. Hypermetropia

Q.

The lens used by a person with hypermetropia is a ___ lens

1. plain

2. concave

3. convex

4. thin

Q. According to conventions, the power of corrective lens used for which defect has a positive power?

1. Hypermetropia
2. Myopia
3. None of these
4. Cataract

Q. Convex lens is used to correct

1. Hypermetropia
2. Glaucoma
3. Cataract
4. Myopia

Q. A person with a myopic eye cannot see objects beyond a distance of $1.5m$. What would be the power of the corrective lens used to restore proper vision?

Q.

If a person can see distant objects clearly, but cannot see nearby objects clearly, then the person is said to be affected from which of the following defects.

1. myopia
2. presbyopia
3. shortsightedness
4. hypermetropia