Frequently Asked Questions

Blue light blocking glasses, also known as blue light protection glasses or blue light filters, have special lenses designed to reduce the amount of blue light emitted by electronic devices reaching the eyes. These lenses block or absorb some of the blue light, reducing potential negative effects such as eye strain, difficulty sleeping, and visual stress.

Prolonged exposure to blue light can affect visual comfort and be linked to certain ailments, such as eye strain. Additionally, some studies suggest that prolonged exposure to intense blue light sources at night can disrupt circadian rhythms and sleep, which can negatively impact overall health.

Blue light affects the brain by interacting with our biological clock, which regulates our circadian rhythm. Exposure to blue light during the day helps keep us alert and active. However, excessive exposure to blue light in the evening or at night, especially from computer screens, smartphones, and televisions, can disrupt the production of melatonin, the hormone responsible for sleep, which can lead to difficulty falling asleep and sleep disturbances.

Furthermore, blue light can affect our mood, improving it during the day but potentially disrupting sleep at night. Long-term exposure to blue light can also negatively impact overall eye health and overall health, making managing blue light exposure important in daily life.

The short answer to this question is yes. They work to reduce blue light exposure and improve visual comfort in certain situations, especially when using electronic devices for extended periods.

The best, targeted solution for a complementary effect will be both versions. However, if only one is available, you should ask yourself which is more challenging for you. If you work a lot during the day in front of a screen or under LED lighting and your eyes are dry, tired, bloodshot, experience feelings of overstimulation, brain fog, or frequently experience headaches, then the DayShield version is worth considering. If, on the other hand, you have more trouble falling asleep, sleeping well, or regenerating, or you wake up in the middle of the night and find it hard to get out of bed in the morning, the NightShield version will be the perfect choice.

DayKhel glasses are worn indoors during the day, for example, in front of a computer.

NightKhel glasses should be put on 2-3 hours before bed.

SunKhel glasses should be worn outdoors.

The blue light-blocking coating doesn't wear off, so you can safely use EyeKhel glasses all the time.

We recommend cleaning them with the included microfiber cloth and running water.

No, this model is only available in one size.