What is myopia or near-sightedness? What is the far point of a normal eye and a myopic eye?

Explanation

The defect of vision due to which a person can see nearby objects clearly but cannot see distant-objects distinctly is called myopia or near-sightedness.
In a normal eye, the far point is at infinity. The parallel rays coming from a distantobject (at infinity) are focussed on the retina. In turn, the retina conveys the message to the brain via optic nerve.

A myopic eye has the far point nearer than Infinity.
A person with myopia can see clearly up to a distance of a few metres (1.e., nearby objects can be seen clearly) but cannot see the distant objects distinctly. The image of a distant object is formed in front of the retina and not on the retina itself