Where is Blue Light found?

Blue light is actually everywhere. When outside, light from the sun travels through the atmosphere. The shorter, high-energy blue wavelengths collide with the air molecules causing blue light to scatter everywhere. This is what makes the sky look blue. In its natural form, your body uses blue light from the sun to regulate your natural sleep and wake cycles. This is known as your circadian rhythm.

Artificial sources of blue light include electronic devices such as cell phones, tablets and computers, as well as energy-efficient fluorescent bulbs and LED lights.

In recent times, COIVID – 19 has resulted in increased use of digital devices and screen time for work, study and leisure activities like e-gaming. Children are especially susceptible to the harmful blue light exposure, as the school classes are now being imparted via video conferencing (e-learning). Hence, Blue Light protection eyeglasses are becoming a necessity even for people who don't require a prescription.

 

How to save your eyes from harmful blue light?

The use of protective eyewear can play an important role in shielding your eyes against the harmful effects of blue light.

For indoors, in low light or at night, protective ophthalmic lenses with a special coating designed to reflect and cut high-energy blue light penetration are available. This type of lens coating is referred to as blue light blocking lenses.