Which part of the eye is primarily responsible for sharp vision?

The retina is the part of the eye that is primarily responsible for sharp vision. It contains light-sensitive cells known as photoreceptors, specifically rods and cones, which convert light into neural signals. The retina plays a crucial role in visual acuity; cones are particularly important for sharp color vision and are concentrated in the fovea, the central part of the retina. This area allows for the highest resolution of images when looking directly at objects.

While the cornea and lens also contribute to focusing light onto the retina, they do not directly process visual information. The iris functions to control the amount of light entering the eye by adjusting the size of the pupil but does not play a role in the perception of sharpness in vision. Thus, the retina's function in forming clear images makes it the key structure for achieving sharp vision.