HOME >> The effects of ultraviolet rays on the eyes and measures to prevent them

Here are explanations on the purposes of measures against ultraviolet rays divided into two main groups.

１. Measures against ultraviolet rays to slow down the progression of eye disorders even if only a little

Example
I was told by my ophthalmologist that lenses that cut out harmful ultraviolet rays and highly irritating blue lights would be good for me. Are there any such lenses that are available? The lenses that your ophthalmologist recommends are absorption lenses. These absorption lenses are friendly to the eyes as they effectively suppress blue light rays, which have some of the more powerful short wave lengths (380 to 500 nm) among visible rays and a scattering feature, while completely cutting out ultraviolet rays.

2. Measures against ultraviolet rays for maintaining health and protection from such harmful rays

Example
I have heard that problems such as cataract and blemishing are caused by ultraviolet rays. I have heard that some sunglasses are unable to cut out ultraviolet rays. What kind of lenses do I need?

There are three points to keep in mind regarding ultraviolet rays.

１．20% of cataracts are caused by ultraviolet rays.
２．Most of the ultraviolet rays that people are exposed to throughout their lives is irradiated by the time they are eighteen years of age.
３．Ultraviolet rays causes blemishes and wrinkles like the sunburned skin not only through direct contact, but also by entering the eyes. Ultraviolet rays are lights of short wave lengths that is invisible to the eyes, but light gets more powerful and harmful to the human body as the wave lengths get shorter. More effective measures against ultraviolet rays are needed to prevent eye disorders like the ones above, to take care of children, and for maintaining beautiful skin. In conclusion,

１．lenses with ultraviolet protection should be selected regardless of whether they are colored or clear.

Most spectacle lenses today offer ultraviolet protection, but please read the descriptions when purchasing commercial sunglasses as there are some that do not cut out enough ultraviolet rays. Absorption lenses that suppress not only ultraviolet rays but light of short wave lengths (blue light rays), which is a particularly powerful form of visible rays, are friendly to the eyes and recommended for preventing eye disorders.

２．Absorption lenses that suppress not only ultraviolet rays but light of short wave lengths (blue light rays), which is a particularly powerful form of visible rays, are friendly to the eyes and recommended for preventing eye disorders.

Even if they are of darker colors, absorption lenses reduce glaring without making the environment look darker like sunglasses do. Light shielding overglasses are simple and convenient as they can be worn over your eyeglasses.

３．Even if they are of darker colors, absorption lenses reduce glaring without making the environment look darker like sunglasses do. Absorption overglasses are simple and convenient as they can be worn over your eyeglasses.

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