Tips For Protecting The Eyes While Looking At A Screen

People today are surrounded by screens. They look at computer monitors, laptops, tablets, and phones for work purposes, for entertainment, and for connecting with others. However, the blue light emitted by an electronic screen as well as light from LED and fluorescent bulbs can hurt the eyes, and that's why many people are using blue light blocking glasses.

What Is Blue Light?

Blue light is a part of the visible light produced by the sun. Most people are aware of the dangers of ultraviolet (UV) light, but they may not realize that blue light can have an even stronger effect on the eyes. Blue light penetrates more deeply into the eyes, and years of exposure can damage the retinas. Research suggests that blue light may be a contributing factor to macular degeneration (an age-related condition that can lead to blindness) and retinal cell death. Other problems associated with blue light exposure include sleep problems and eye strain.

How Are People Exposed To Blue Light?

Blue light makes up between one-quarter and one-third of sunlight and a similar proportion of light from compact fluorescent lamps (CFLs), LED bulbs, and flatscreen TVs. Smaller screens like mobile phones, tablets, and laptops also emit blue light. Even though they don't produce a lot of light, they increase people's exposure to blue light significantly due to the amount of time most people spend looking at them.

How Can People Protect Themselves?

Glasses that block blue light are a recent innovation, and they can provide a great deal of protection. These glasses have lenses that selectively filter blue light while letting other types of light pass through. Both prescription and non-prescription lenses are available. Reading glasses and sunglasses do not require a prescription. Some glasses are designed specifically for looking at the computer while others have an anti-glare coating that also protects the eyes from the blue light in sunlight. To see some examples, browse

What Are The Benefits Of Blocking Out Blue Light?

Many people who use protective glasses that filter blue light report better sleep at night. One of the effects of looking at a screen, especially at bedtime, is that the bright light suppresses the production of sleep-inducing melatonin in the body, making it difficult for people to go to sleep. People also report feeling less eye strain after looking at a computer or screen for hours at a time when they use glasses with filtering lenses. These glasses can also protect eye function in the long term. Learn more at