ProgressiveLinsen

ProgressiveLinsen, commonly known in English as progressive or varifocal lenses, are eyeglass lenses designed to correct presbyopia by providing a seamless gradient of optical powers from the top of the lens to the bottom. Unlike bifocals or trifocals, which have fixed zones, progressive lenses offer distance vision at the top, intermediate vision in the middle, and near vision at the bottom without visible lines.

The concept originated in the mid-20th century; the first commercial progressive lenses appeared in the 1950s, with key developments by designers at major lens manufacturers such as Essilor. In German-speaking markets the term ProgressiveLinsen is used to describe these lenses.

Design and manufacturing: Basic designs use a gradual power change through a corridor; modern versions rely on freeform technology and computerized measurements to tailor the surface to the wearer’s eyes, frame style, and working distances. Frame choice and fitting influence the usable field of view; some lenses come with short corridors for smaller frames.

Advantages and limitations: The main advantage is a single lens that supports multiple distances, reducing the need for switching between separate glasses. Limitations include an initial adaptation period and potential peripheral distortion around the edges, which may be more noticeable with strong prescriptions or large frame sizes. Price is typically higher than single-vision lenses.

Usage and care: A professional fitting ensures proper alignment with the pupil and proper pantoscopic tilt. Proper frame selection and careful wearing help minimize distortion. It may take several days to weeks to fully adapt, and some users prefer to try different designs or brands.