In physics class, there should have been an introduction about eyes before, such as binoculars, microscopes and other equipment. The eye is a camera structure. Parallel rays pass through the lens and converge on the retina. It is basically like a camera.

The parallel light emitted by eyepieces such as telescopes is equivalent to aiming the camera at a still life or a person outside. All that enters the camera lens is parallel light. Then he can image on the negative.

In order to broaden our horizons, we usually use telescopes and microscopes.

So the convex lens is imaged, and the imaging place is on the light screen. It is formed by the actual light converging through the lens and then shining on the light screen. Is a collection of points where the actual light is concentrated. And the eyes are not screens. Only the retina in the eye is equivalent to the light screen. As his eyes receive parallel light, there is a convex lens in front of his retina, which is equivalent to a light screen and is a zoom convex lens. The image can exist on the retina accurately. So there is no contradiction here.