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Are Computers (and Other Gadgets) Hurting My Eyes?

What Is Blue Light and How Is it Affecting my Eyes?

Blue light is a beneficial light found in sunlight. However, it is also emitted from a number of artificial sources, like computer screens, Light Emitting Diodes (LEDs) and smartphones. It has a wavelength varying from 380 to 500 nanometers (nm) and helps the human body by regulating its internal biological clock. A particular band of this light, however, can damage the eyes.

Damaging Blue Light

The component of the light spectrum, which can damage the human retina, has been identified and new protocol developed: the in-vitro test. This test is done on retinal cells to understand the harmful effect of rays, as per their wavelengths, leading to the discovery that wavelengths ranging from 415 nm to 455 nm cause maximum harm to target retinal cells. These wavelengths often originate from artificial light sources, along with sunlight, and can lead to damaging effects on the eyes, including the development of cataracts.

Crizal Blue Light Protection

Thus, Essilor, a leading company in ophthalmic optics, developed the Crizal Prevencia lens. This lens is capable of protecting eyes from those wavelengths that contribute to retinal cell degeneration. It allows blue light at the beneficial end of the spectrum to pass through while filtering out the harmful blue-violet rays. This technology has brought about a new category in the field of preventive lenses, taking them to the next level by delivering all of the protective benefits while maintaining lens transparency. As more than a billion people in this world are negatively affected by harmful blue light, this protective lens technology is sure to contribute to the level of preventative care that is now available to patients.

To learn more about harmful light sources and how to protect your eyes, contact your local Vision Source North Carolina practice for a consultation.