Progressive lenses

Progressive lenses

OPTIMUM VISION WITH
WETZLICH PROGRESSIVE LENSES

Progressive lenses

Progressive lenses accommodate several ranges of vision without any detectable transitions in one lens. More information can be found here:

When the lens of the eye is no longer able to adapt to different distances due to age, the different ranges covered by the spectacle lens take over this task. Progressive lenses offer a maximum of aesthetics and function. Roughly speaking, the lenses are divided into three areas. The upper part of the lens is optimised for seeing at a distance, the lower part of the lens for all near areas; and between these areas there is a gradual increase in support for the eye, so that the right effect is provided for every distance. The natural movement of the eye is given optimal support, as when we look at things close to us, we automatically lower our gaze and slightly bring the eyes together. The progressive lens should be regarded as an all-rounder among spectacle lenses – as an all-day solution without having to change glasses for different requirements. However, some vision requirements are so specific, such as working all day on a computer screen, that other lens types are recommended for this special requirement.

Presbyopia is not defective vision, but rather a typical eyesight problem that occurs with age. The reason for age-related problems is the lens of the eye, which loses its elasticity with increasing age. If there is no other defect in eyesight, only near vision is affected. When we are young, the eye can do anything and contraction of the lens allows almost unlimited adaptation, meaning that we can see things clearly even when they are very close to the eye. The aging process of the eye begins very early in life. But since we usually don’t need to see things that are only 5cm in front of us in focus, the effect only becomes noticeable quite late (usually between the ages of 40 and 45), when a normal reading distance of 30 to 40cm is no longer in clear focus. Unfortunately, short-sighted people usually notice the effect very late, since the eye can naturally see things close to us better without glasses. We often simply take our glasses off as a substitute for reading glasses. However, this only solves the problem to a very limited extent, as even reading glasses are anything but a complete solution. In addition, getting used to progressive lenses is much easier the earlier you start, as the differences in effect between things that are distant and near by are much smaller. In short: a typical case of a “false economy”.

Progressive lens quality levels

There are numerous quality levels in the area of progressive lenses. That’s why expert advice from an optician is important – because every eye is different, just like the demands on eyesight itself. The main difference between progressive lenses is their technology (outer progressive, inner progressive or progressive on both sides) and the resulting image. Generally speaking, the higher the quality of a progressive lens, the lower the blurring in the peripheral area.

Our premium progressive lenses: W3-Nova 2.0
Our individual progressive lenses: W3-Nova HD, Prophecy, iO
Our premium individual progressive lenses: Prophecy HD/XL, iO HD

The latest progressive lens technology

The optically effective surfaces of progressive lenses can be applied in various ways. The difference can be seen above all in the method of grinding the lens. In an outer progressive design, the optically effective surface is only on the front of the lens. The outer progressive method is the most old-fashioned form of progressive lens. Now the focus is more on the inner progressive or double-sided progressive variants. The inner progressive lenses are manufactured using the FreeForm process, in which the optically effective surface is applied to the inside of the lens. With a double-sided progressive design, the effective surface is not only on the inside or outside of the lens, but on both sides. The advantage of this technology is that the field of vision in each zone (far, medium distance, close up) becomes larger and there are hardly any blurred areas in the lens. Furthermore, optical images appear more natural and the so-called seesaw effect is reduced.

Our progressive lenses with double-sided progression: Prophecy HD, Prophecy XL, iO HD

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