Use photochromic lenses correctly
Those who wear glasses are often at a disadvantage compared to people with normal eyesight. Difficulties arise, especially in summer: You either have to carry a second pair of sunglasses with you with your own eyesight or use tinted attachments. An alternative are so-called photochromic glasses, which change color depending on the sunlight.
Photochromic glasses - an alternative to sunglasses
- The advantage of photochromic glasses is obvious: you always have your sunglasses with you and that eye is optimally protected against harmful solar radiation. This is especially important for people with blue eyes, as they have few protective pigments. The particular advantage of photochromic glasses is that they adapt to the light conditions even with the slightest difference in solar radiation. The decisive factor here is that the glasses can color themselves and back in color depending on the strength of the ultraviolet radiation.
- As a result, photochromic lenses even have an advantage over normal sunglasses: because you have your glasses - at least if you are nearsighted - always on the nose you cannot forget them and you are optimally adjusted to the smallest differences in the incidence of light thanks to the different degrees of coloring.
- Despite all the advantages, there are a few points to consider when buying photochromic lenses: With some - especially older - models, the tint of the Changing glasses too slowly, which can be problematic especially when changing from light to darker surroundings, for example when driving through a car Tunnel. In closed vehicles, a large part of the UV rays are already absorbed through the car window and The lenses are therefore not significantly tinted, but self-tinting lenses are not suitable for convertible drivers. It is best to get advice from an optician.
- Another problem, which now hardly occurs with modern glasses, is the sensitivity of the glasses to temperature differences. In the past, photochromic glasses could react to a change in temperature by darkening them.
- Self-tinting plastic lenses are available in brown or gray. Mineral glasses can only be colored brown.
Sunglasses are not only important when driving in summer. Even in winter with ...
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