What is myopia?

What is myopia?

• A. Farsightedness where the focal point is behind the retina
• B. Nearsightedness where the focal point is in front of the retina
• C. Normal vision
• D. Astigmatism

Answer: (B)

The main idea is how light is focused on the retina. In myopia, the eye bends light so that the focal point falls in front of the retina, either because the eye is too long or the cornea/lens have too much refractive power. Because of this, distant objects form an image in front of the retina and appear blurry, while close objects can be seen more clearly. This description matches nearsightedness. Farsightedness would place the focal point behind the retina, making distant objects seem clearer than near ones. Normal vision occurs when the focal point lands exactly on the retina. Astigmatism involves irregular curvature of the cornea or lens, causing multiple focal points and blurred or distorted vision at various distances. Myopia is typically corrected with minus lenses that diverge light slightly, moving the focal point back onto the retina.

The main idea is how light is focused on the retina. In myopia, the eye bends light so that the focal point falls in front of the retina, either because the eye is too long or the cornea/lens have too much refractive power. Because of this, distant objects form an image in front of the retina and appear blurry, while close objects can be seen more clearly. This description matches nearsightedness.

Farsightedness would place the focal point behind the retina, making distant objects seem clearer than near ones. Normal vision occurs when the focal point lands exactly on the retina. Astigmatism involves irregular curvature of the cornea or lens, causing multiple focal points and blurred or distorted vision at various distances. Myopia is typically corrected with minus lenses that diverge light slightly, moving the focal point back onto the retina.