Which part of the eye is responsible for sharp vision?

The retina is the part of the eye responsible for sharp vision because it contains photoreceptor cells called rods and cones that convert light into neural signals. Cones are particularly important for color vision and sharp visual acuity, and they are densely packed in the fovea, a small area of the retina that is crucial for seeing fine detail. When light enters the eye, it is focused by the cornea and lens onto the retina, where the photoreceptors detect the light and send signals to the brain, allowing us to perceive clear images. Therefore, the functionality of the retina is vital for achieving sharp vision, making it the most significant layer in the context of visual acuity.

In contrast, while the cornea and lens are important for focusing light, and the iris controls the amount of light entering the eye, they do not directly contribute to the perception of sharp images.