About Blue Light Lenses

Laramy-K Blue Light Lens Guide

Conant UV++ CR-39 lenses provide protection against harmful UV rays and high-energy visible (HEV) blue light. Designed to reduce eye strain from digital screens, these lenses block 100% of UV 400 and filter blue light at the wavelengths most associated with retinal stress.

Younger UV 420 1.67 lenses block 100% of UVA and UVB rays while filtering 80% of high-energy blue light at 420nm. Designed to reduce digital eye strain, these lenses help protect against the long-term effects of UV and HEV light exposure.

Vision Ease Clear Blue Poly lenses absorb ultraviolet and blue light between 400-460nm while blocking 100% of UV400. These lenses reduce glare and improve contrast sensitivity by filtering short-wavelength blue light, which can cause visual strain and blue myopia. They are also the only clear polycarbonate blue light lenses to receive the Skin Cancer Foundation seal of recommendation.

Shamir Blue Zero Trivex lenses block up to 98% of high-energy blue light between 415-435nm while absorbing UV for added protection. Designed to reduce eye strain without distorting color perception, these lenses help maintain contrast sensitivity and visual clarity.

BluTech Lenses

BluTech Indoor CR-39

BluTech Outdoor 1.56 FT28

BluTech lenses are designed to filter out a significant portion of high-energy visible (HEV) blue light, particularly in the 400–450 nanometer (nm) wavelength range. This range is associated with digital eye strain and sleep disturbances.

What is Blue Light?

Blue light is part of the visible light spectrum with wavelengths between 400 and 500 nanometers. It is naturally emitted by the sun and also by artificial sources such as LED lighting and digital screens. Exposure to blue light during daylight hours plays a role in regulating sleep-wake cycles and maintaining alertness. 

How Do Blue Light Lenses Work?

Blue light lenses are designed to selectively filter certain wavelengths of blue light, reducing the amount that reaches the eyes. There are different types of blue light lenses, each working in slightly different ways:

• Clear or Nearly Clear Coatings: Many modern blue light lenses use a transparent or near-transparent coating that selectively blocks or reflects blue light while maintaining a natural appearance. These coatings work by reflecting part of the blue light spectrum away from the eyes.
• Embedded Filtration Technology: Some lenses incorporate blue light filtering materials directly into the lens rather than relying on surface coatings. This method provides consistent filtration across the entire lens.
• Tinted Lenses: Some blue light lenses have a slight yellow or amber tint, which helps absorb blue light before it reaches the eyes. The tint alters the way colors appear but can reduce glare and enhance contrast.

The degree of blue light filtration varies depending on the design. Some lenses are marketed to block only high-energy blue light, while others filter a broader range.

Perspectives on Blue Light Lenses

Opinions on the effectiveness of blue light lenses vary. Some people find that these lenses reduce glare and improve visual comfort during extended screen time, while others notice little to no difference. Research on the subject has produced mixed results, with some studies suggesting that blue light lenses have minimal impact on eye strain and sleep quality.

Blue Light Lenses as a Comfort Option

Rather than being viewed as a medical necessity, blue light lenses can be considered a personal preference for those who feel they help ease visual discomfort. While the scientific debate continues, their widespread use indicates that some people experience relief from symptoms like eye fatigue and screen-related discomfort.

Ultimately, whether blue light lenses are beneficial depends on the individual. They may not be a universal solution, but for those who find them helpful, they offer a simple way to make screen time more comfortable.

Laramy-K DES Coating

Laramy-K DES is an anti-reflective (AR) coating designed to alleviate digital eye strain (DES). This coating reduces glare and reflections on lens surfaces, enhancing visual comfort during prolonged digital device use. By applying multiple layers of metallic oxides, Retinal Bliss DES minimizes glare and improves light transmission, resulting in clearer vision and reduced eye fatigue. In addition, the DES coating also serves as scratch resistant.

A key aspect of this coating is its ability to absorb a portion of high-energy visible blue light emitted by digital screens instead of reflecting it. Unlike basic blue light coatings that can leave a noticeable tint on the lenses, DES maintains a neutral appearance, with only a residual purple color on the lens surface. DES lenses also block harmful UV light.