To correct myopia vision one should usea)Convex lensb)Concave lensc)Plane lensd)NoneCorrect answer is option 'B'. Can you explain this answer?

Question

Answer

In order to correct Myopia vision, Concave lens should be used. Because, a person with Myopia can see the nearer objects clearly but can't see distant objects clearly due to the image formation occurs in front of Retina. So, we can see the nearer objects clearly. To do the correction for the eye defect Myopia, we should use Concave lens of suitable focal length. So, Option b is correct friend.

Answer

Concave

Answer

Myopia also known as nearsightedness or short-sightedness is a condition of the eye where light focuses in front, instead of on the retina. People having myopia can see close objects clearly, but objects farther away appear blurred. It occurs if the eyeball is too long or the cornea is too curved. So, the correct answer is option B.

Answer

Correcting Myopia Vision with Concave Lens

Introduction:
Myopia, also known as nearsightedness, is a refractive error of the eye where distant objects appear blurry, while close objects can be seen clearly. It occurs when the eyeball is too long or the cornea is too curved, causing light rays to focus in front of the retina instead of directly on it. To correct myopia and achieve clear vision, the use of corrective lenses is necessary.

Options:
a) Convex lens
b) Concave lens
c) Plane lens
d) None

Explanation:
In the given options, the correct answer to correct myopia vision is option 'B', which is a concave lens. Let's understand why a concave lens is the appropriate choice for correcting myopia:

1. Defining a concave lens:
- A concave lens is thinner at the center and thicker at the edges, causing light rays to diverge when passing through it.
- It is also known as a diverging lens.

2. Working principle:
- When a concave lens is placed in front of the myopic eye, it helps in diverging the incoming light rays.
- This divergence compensates for the excessive focusing power of the myopic eye, which tends to focus the light in front of the retina.
- By diverging the light rays, the concave lens allows them to focus directly on the retina, resulting in clear vision.

3. Optical effect:
- The concave lens helps in spreading out the light rays, which were converging too soon due to the elongated eyeball or excessive corneal curvature in myopia.
- It shifts the focal point farther away from the eye, enabling the image to be formed precisely on the retina.

4. Corrective power:
- The exact corrective power of the concave lens required for an individual depends on the degree of myopia.
- Eye care professionals measure this power in units called diopters (D).

5. Prescription:
- An eye examination by an optometrist or ophthalmologist is crucial for determining the precise prescription needed to correct myopia.
- The prescription specifies the spherical power, which indicates the strength of the concave lens required to achieve clear vision.

Conclusion:
To correct myopia vision, a concave lens is the correct choice. The diverging effect of the concave lens compensates for the excessive focusing power of the myopic eye, allowing light rays to focus directly on the retina. It is essential to consult an eye care professional to determine the exact prescription and corrective power needed for each individual.

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