Which lens type is noted for distinct areas for both distance and reading?

The lens type recognized for having distinct areas designed for both distance and reading is the alternating vision lens. This type of lens typically features a distinct separation between the distance vision area and the near vision area, allowing the wearer to use either part of the lens depending on their visual needs.

In contrast, monovision lenses are made for individuals who use one eye for distance vision and the other for near vision, not providing a distinct area for both within the same lens. Progressive lenses, while offering a gradual transition between different vision zones, do not have clearly defined areas but instead blend them together to facilitate a smooth transition. Single vision lenses contain a single focal point and do not accommodate both distance and near vision simultaneously, focusing on only one type of visual correction.

Therefore, alternating vision lenses specifically cater to those needing defined sections for different viewing distances, making them the correct choice in this context.