Blue Light Blocking Glasses, UV Cut, Non-prescription, Lightweight, Black

Size: Lens diameter (each) approx. 54mm / Bridge approx. 16mm / Temple length approx. 130mm / Lens height approx. 29mm

Color: Black

Weight: Approx. 21g

Features: Blue light blocking, UV cut

These are versatile computer glasses that are simple yet can be matched with any style.

Furthermore, the lenses use blue light cut lenses, which reduce eye strain and fatigue when using computers, smartphones, or playing games.

They can be used in various ways, such as for fashion, work, relieving computer eye strain, or as a windbreak for contact lenses.

They also block blue light from the sun. With UV cut lenses, you can be assured of protection from ultraviolet rays.

These are unisex, suitable for both men and women, so they're great for couples too!

Perfect ergonomic design and sizing.

Not too big, not too small, with a design and size tailored for Japanese people.

What is blue light?
It is visible light in the blue spectrum with a wavelength between 380 and 500nm.
Modern white LEDs, which are widely used today, achieve white light by combining blue light sources with yellow phosphors. Therefore, even with the same light intensity, the amount of blue light included is inevitably higher.

Concerns about excessive blue light exposure
Prolonged exposure to blue light can suppress the production of melatonin.
Melatonin is a substance secreted in the brain that induces sleep in humans.
Therefore, suppressing melatonin can disrupt sleep and circadian rhythms, potentially causing health problems.
The energy of the light itself is also strong, so it is considered to have a significant impact on the eyes.