Myopia is a defect in the eye in which people can see the nearby object clearly but cannot see the far-off object that clearly.
By using concave lens this defect is corrected.
The eye lens can form a clear image when an object is placed between far point and point of least distinct vision.
If the object which is kept beyond far point can be placed between the far point and the point of least distinct vision by lens then this image will act as a object.
Thus, a person sees clearly.
Final Answer:
Myopia can be corrected by using a concave lens.