In a relaxed eye, where is the focal point for myopia relative to the retina?

In a relaxed eye, where is the focal point for myopia relative to the retina?

• A. In front of retina.
• B. On retina.
• C. Behind retina.
• D. At the cornea.

Answer: (A)

In a relaxed eye, distant light is supposed to be focused exactly on the retina. When myopia is present, the eye’s optics converge light a bit too strongly or the eye is too long, so the image comes to a point before it reaches the retina. That means distant objects can’t be seen clearly because their light would focus in front of the retinal surface rather than on it. The key idea is that the focal point sits in front of the retina in myopia, which is why minus lenses (diverging) are used to push the focus back onto the retina and restore sharp distant vision.

In a relaxed eye, distant light is supposed to be focused exactly on the retina. When myopia is present, the eye’s optics converge light a bit too strongly or the eye is too long, so the image comes to a point before it reaches the retina. That means distant objects can’t be seen clearly because their light would focus in front of the retinal surface rather than on it. The key idea is that the focal point sits in front of the retina in myopia, which is why minus lenses (diverging) are used to push the focus back onto the retina and restore sharp distant vision.