Question

what is myopia or near /short sightedness?

Answer 1

Explanation:

$\huge \boxed{ \boxed{ \orange{ \bf \underline{Myopia }}}}$

→ Myopia is also called as Short - sightedness .

→ Myopia is that defect of vision due to which a person cannot see the distant object clearly.

→ It means that he can see the nearby objects clearly .

→ The defect of eye called myopia [ Short - sightedness ] is caused due to :

(i) Due to high converging power of eye-lens ( because of its short focal length ) .

(ii) Due to eye-ball being too long .

→ Myopia is corrected by using spectacles containing concave lenses .

$\bf \underline{Note :- }$

1. The far point of an eye suffering from myopia is less than infinity.

2. The concave lens used for correcting myopia should be of such a focal length that it produce a virtual image of the distant object and the far point of the myopic eye.

3. The whole purpose of using a concave lens is used to reduce the converging power of eye-lens.

Answer 2

$\huge\mathfrak\pink{Answer:-}$

$\huge{\pink{\red{\sf \boxed{Myopia}}}}$

Myopia is the inability to see things clearly unless they're relatively close to your eyes. Also called nearsightedness or shortsightedness, myopia is the most common refractive error among children and young adults.

Symptoms:-

Nearsightedness symptoms may include:

• Blurry vision when looking at distant objects.
• The need to squint or partially close the eyelids to see clearly.
• Headaches caused by eyestrain.
• Difficulty seeing while driving a vehicle, especially at night (night myopia)