Question

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Here is your question...

Differentiate between Hypermetrophia and Myopia????

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Answer 1

Answer:

Myopia

In myopia , a person is not able to see distant objects clearly.

Hypermetropia

In hypermetropia , a person is not able to clearly see the nearby objects.

Myopia

In this defect , lens are not able to produce sharp image of the distant objects on the retina instead the image is formed in front of the retina .

Hypermetropia

In this defect , image is formed behind the retina.

Myopia

The reduction in the focal length of the eye lens may be a possible cause.

Hypermetropia

The increase in focal length of the eye lens may be a cause.

Myopia

Another cause can be the elongation of eye ball.

Hypermetropia

It may also be caused due to flattening of the eyeball .

Myopia

Myopia can be corrected by using concave lens of suitable focal length.

Hypermetropia

Hypermetropia may be corrected using convex lens of suitable focal length .

Høpe it helps✌

Answer 2

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•$\huge\mathfrak\purple{Myopia}$

→ In this, a person cannot focus on distant objects but see near objects clearly.

→ The ℱar point of a short-sighted person may we only a few metres rather than at infinity.

→ This defect occurs if a person's eyeball is larger than the usual diameter.

→ In such a case, the image of a distant object is formed in front of the retina.

→ It is because the eye lens remains too converging, forming the image of the object in front of the retina.

•$\huge\mathfrak\purple{Hypermetropia}$

→ It is also known as hyperopia or far sightedness.

→ In this, a person cannot focus on near objects but can see distant objects clearly, whereas the normal eye has a near point of about 25 cm.

→ A ℱar-sighted person may have a near point several metres from the eye.

→ This defect may occur if the diameter of person's eyeball is smaller than the usual or if the lens of the eye is unable to curve when ciliary muscle contract.

$\bf\green{Ciliary \: muscle}$

These muscles hold the lens in position.

→ In such a case, for an object placed at the normal near point (i.e 25 cm from eye), the image of the object is formed behind the retina.

→ It is because the lens of the eye is not sufficiently converging to focus the object located and the normal near point.

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