Blue light glasses are eyewear that have lenses with filters that block or absorb blue light and, in some cases, UV light from getting through. Blue light is part of the visible light spectrum and is emitted by the sun and digital devices like laptops, smartphones, and LED lights. It is a high-energy, short wavelength that can cause eye strain, headaches, and insomnia. The glasses are designed to reduce exposure to blue light waves that can keep you awake, especially after dark, and help reduce digital eye strain.

There have been claims that blue light glasses can improve sleep quality, reduce eye strain from digital screens, and even cure headaches. However, the effectiveness of blue light glasses is not backed up by science, and no significant improvement in vision performance or sleep quality has been found from using blue-blocking lenses. While blue light glasses can block blue light, blue light is not necessarily something that needs to be filtered out for ocular health.

That said, blue light can suppress our natural melatonin production, making it hard to sleep if there is increased screen exposure at night. So while the glasses will not protect you from long-term retina damage and may not safeguard against eye strain, they can be a useful tool for screen use in the evenings.

In summary, blue light glasses can help reduce exposure to blue light waves that can keep you awake, especially after dark, and help reduce digital eye strain. However, their effectiveness is not backed up by science, and they may not safeguard against eye strain or long-term retina damage.