What Percentage Of Blue Light Do The Swannies Focus (Previously Day) Glasses Block?

Focus Day Swannies are designed for daytime screen use, when your body still relies on natural light cues to stay alert and productive.

The lenses are calibrated to reduce high-energy blue light while maintaining clear, natural vision for work and daily activities.

• Block up to 98% of blue light at 400nm

• Gradually reduce filtration to approximately 45% at 450nm (the most harmful part of the spectrum)

• Reduce approximately 21-45% of blue light across the 450-500nm range

• Maintain high visible light transmission and near-natural colour perception

Unlike nighttime lenses, Focus lenses are intentionally balanced. They reduce a portion of higher-energy blue light commonly associated with prolonged screen exposure, while still allowing enough light through to support normal daytime visual function.

Best suited for:

• Office and computer work

• Studying

• Extended daytime screen use

• Bright indoor environments

Focus Day Swannies are designed to support visual comfort during the day without overly darkening your vision. Protect your eyes without telling your brain it is nighttime.

View our Focus (Previously Day) Swannies Independent Transmission Report.