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Photochromic lenses: features and advantages

Lighting conditions that can cause eye discomfort. But, having to change glasses every time the light increases or decreases is not practical unless you have trained your brain not to wear glasses. To solve this problem there are photochromic lenses. They are accessories that adapt to the intensity of the light.

Next, we talk to you about its great usefulness. They help you see better outdoors and other contexts.

What are the photochromic lenses?

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Photochromic lenses look like regular translucent glasses. But, when sunlight hits the crystals, they darken. Ultraviolet radiation causes a reaction in the molecules of the micas, thus causing their color to change if the user moves to more illuminated areas.

Photochromic glasses turn dark even on cloudy or winter days. Although the sun is not perceived in the visible light spectrum, the lens is capable of detecting UV rays that pass through clouds. In this way, they provide total protection against harmful light that we are not able to see.

Prescription photochromic glasses are also available in opticians. It is possible to combine the formulated crystals with a cover that changes color. This will help to further improve the quality of vision, prevent eye fatigue due to glare and protect the retina from damage caused by UV rays.

Main qualities of photochromic lenses

Photochromic lenses offer different benefits. They have several positive characteristics that distinguish them from other similar ones. Its outstanding qualities are the following:

  • Two in one: using this type of lenses will give you the benefits of sunglasses with the advantages of prescription glasses. Precisely, they are designed to avoid changing from one contact lens to another.
  • Darkening: darkening lenses take up to 30 seconds to take on the appropriate color for the lighting situation. They then go through a cycle that takes 2 to 5 minutes to return to normal.
  • UV protection: in addition to providing a solution to glare, it offers a barrier against ultraviolet radiation. Its coating works as a UV ray detector, even on cloudy days.
  • Various colors: They are available in a variety of colors, which meet specific needs. There are browns, grays, greens, yellows and the classic translucent photochromic lenses.
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Differences between photochromic lenses and other filters

The main difference is that the lens changes color when it comes into contact with light. UV filters and anti-reflective filters are photosensitive just like photochromic lenses because they respond to light beams. But none of them have the ability to adapt their coloration to changes in light.

Another distinctive quality is that it combines the characteristics of sunglasses with those of formulated lenses. This is because they not only integrate the filter. Additionally, they darken the lenses to increase visibility in open or brightly lit places, where light is an obstacle to focusing vision.

Photochromic contact lenses are found in a diverse range of colors. The brown ones are indicated for visual fatigue and cataracts. The gray ones for everyday use. Yellow ones for people with retinal diseases and for driving at night. The green ones are suitable for practicing water sports or mountain sports.

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