You spend most of your waking hours staring on a computer or smartphone screen, which exposes you to potentially harmful blue light. You are probably reading this message on one of your screens, exposing your eyes at this moment. Among the detrimental effects of blue light include eyestrain, headaches, eye disease, and insomnia. However, technology is here to stay, and there has to be a way to counter its adverse effects. Blue light glasses or computer glasses can help protect you from the harmful effects of screen time.

Blue light is a short wavelength that emits high amounts of energy. It is among the colors in the light spectrum that is visible to the human eyes. However, this light does not appear to be blue when observed through a naked eye.

How blue light affects your eyes

It obstructs your wake/sleep cycle

Before the advent of artificial light, the sun regulated people's sleep schedules. When darkness set in, this would signal the body to start producing melatonin, the hormone which makes you fall asleep sleep. Today, you watch TV in the evening before going to sleep, which can delay melatonin production due to the disruption of signals to the brain by blue light waves. This can distort your sleep pattern since the brain mistakes blue light for the daytime. Blue-light blocking glasses help reduce the effect of blue light, making you able to fall asleep after using devices which emit blue light shortly before going to bed

It increases the risk of macular degeneration

Heightened exposure to blue light can increase your risk of macular degeneration and cataracts, causing permanent loss of vision when light-sensitive cells in the retina become damaged. Your eye's cornea and lens have a reduced ability to filter out high energy visible (HEV) light to prevent it from reaching the retina. Blue light glasses help filter out harmful rays of light before they can reach the retina.

It can cause eye strain

Compared to other visible light, blue light scatters more easily. The resulting unfocused light reduces contrast, causing digital eye strain, manifested by neck pain, headaches, eye strain, and blurred vision. Blue-light blocking glasses help enhance your focus and reduces eye strain, thus improving your productivity.

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