Which contact lens has a gradual power change from the most plus (the add power) in the center of the lens to the distance prescription located near the edge of the lens?

The correct answer to the question is that the contact lens exhibiting a gradual power change from the most plus in the center to the distance prescription near the edge is the multifocal lens.

Multifocal lenses are specifically designed to provide multiple focal points, allowing a wearer to see clearly at different distances—specifically for presbyopia correction. The central area of a multifocal lens typically contains the add power, allowing for up-close vision, while the periphery transitions to distance vision. This gradual change is essential for providing a smooth and natural visual experience, making it easier for the wearer to adapt to both near and far distances without needing to switch between different pairs of glasses or lenses.

Aspheric lenses, while they do have a shape that allows for more natural vision across different distances, do not specifically imply a transition of power in the manner described. Spherical lenses have a uniform curvature and do not incorporate any power gradient, being designed for single vision distance or near correction. Toric lenses are primarily designed for astigmatism correction and have different power and curvature in different orientations, but they do not feature the gradual change in power for both near and distance focus experienced in multifocal lenses.