Progressive glasses, also known as progressive lenses or multifocal lenses, are eyeglass lenses designed to provide clear vision at multiple distances—near, intermediate, and far—using a single lens. Unlike traditional bifocal lenses that have a visible line separating distance and reading correction, progressive lenses have a smooth, gradual change in lens power from the top (for distance vision), through the middle (for intermediate vision like computer use), to the bottom (for close-up tasks such as reading). Key features of progressive glasses:

• They correct presbyopia, an age-related condition that makes it difficult to focus on close objects.
• The lenses have no visible lines, offering a more natural and aesthetically pleasing look.
• They allow seamless transitions between different focal distances without needing to switch glasses.
• Users need to adjust by moving their head slightly to look through the right part of the lens for different distances.

Progressive lenses can take some time to get used to but provide the convenience of one pair of glasses for all vision needs, including driving, computer work, and reading.