Blue light does affect the body’s circadian rhythm, our natural wake and sleep cycle. During the day, blue light wakes us up and stimulates us. But too much blue light exposure late at night from your phone, tablet or computer can make it harder to get to sleep.

Blue Light is the specific section of the visible light spectrum that can have harmful effects to our eyes and sleep.

Artificial blue light is emitted from LED lighting and from digital devices. Our close proximity to the device when viewing, especially over long periods of time, means that the harmful blue light can affect us and our children’s wellbeing.

The rays of the sun may appear to be colorless, but they're actually made up of red, blue, orange, yellow, green and violet hues. Red and orange are located at one end of the visible light spectrum, while blue and violet are at the other.

Red rays have long wavelengths, but produce less energy. At the other end of the spectrum, the wavelengths are shorter, but the energy is stronger. Because blue rays emit higher amounts of energy, they're more likely to affect your eyes.

Most of your exposure to blue light comes from the sun, but you can't avoid exposure simply by staying indoors. In addition to computer monitors and smartphones, blue light is produced by tablets, LED and fluorescent lights, LED light from TVs and compact fluorescent light bulbs.

Although blue light plays an important role in maintaining the sleep/wake cycle, regulating your mood and keeping your memory sharp, it may harm your eyes.

Long exposure to blue light may have been responsible for your symptoms. Blue light lowers the contrast on screens, causing the condition. Other factors that can contribute to eyestrain include poor lighting, failing to take regular breaks, less frequent blinking and dry air.

Long-term exposure to blue light may increase your risk of developing age-related macular degeneration (AMD). AMD occurs when the macula, the area of the retina responsible for central vision, is damaged.

It is known that light exposure suppresses melatonin secretion. Melatonin is a hormone which can influence circadian rhythms. Lower melatonin levels may explain the preliminary evidence of links to cancer.

Fluorescent light bulbs and LED lights do provide more energy efficiency than traditional incandescent bulbs. They also give off more blue light. Incandescent lights do produce some blue light, although less than most of the fluorescent light bulbs available.

During the two to three hours right before bed, avoid viewing bright screens.

Wear blue-blocking glasses or download an app to filter blue and green wavelength at night. This will help those that need to use electronic devices at night and individuals working night shifts.

Red light has the least influence on the circadian rhythm. Consider using dim red lights in bedrooms.

Add screen filters to computer screens, tablets and smart phones to reduce blue light emissions.

Use computer glasses that have yellow-tinted lenses that increase contrast and help block blue light.

Wear anti-reflective lenses to block blue light from digital devices and the sun.

Consider choosing an Intraocular lens (IOL) that protects eyes from blue light. This will replace a cloudy lens during cataract surgery.

For children, especially from birth to age three, the crystal lenses in their eyes are not fully developed. So it goes straight through, it causes a lot more damage in children’s eyes than it does in adults.

Blue light from computer screens and digital devices can decrease contrast leading to digital eyestrain. Fatigue, dry eyes, bad lighting, or how you sit in front of the computer can cause eyestrain. Symptoms of eyestrain include sore or irritated eyes and difficulty focusing.

Studies suggest that continued exposure to blue light over time could lead to damaged retinal cells. This can cause vision problems like age-related macular degeneration.

After cataract surgery, the cloudy lens will be replaced with an intraocular lens (IOL). The lens naturally protects the eye from almost all ultraviolet light and some blue light. There are types of IOL that can protect the eye and retina from blue light.

Screen filters are available for smart phones, tablets, and computer screens. They decrease the amount of blue light given off from these devices that could reach the retina in our eyes.

Eventually there are going to be cities in space.

Let me remind you that nuclear disarmament is not just an ardent desire of the people, as expressed in many resolutions of the United Nations. It is a legal commitment by the five official nuclear states, entered into when they signed the Non-Proliferation Treaty.

I don't smile much, and I never laugh. If you'd been through what I've been through, you wouldn't be smiling, either.

I was a theater man, so I was never in the situation of being a handsome Hollywood leading man, and then having to age.

If you do not raise your eyes you will think you are the highest point.

Operation Fast and Furious was flawed in concept and flawed in execution. The tactics used in this operation violate Department of Justice policy and should never have been used.

I always want to have a personal relationship with everybody that works for me.

There are African-American families around this country - a large, large number of African-American families - that operate out of complete fear that their kids are going to be taken from them and will do anything to prevent that.

If I don't offend somebody, then I'm probably not funny.

Perhaps one of the most essential exercises in learning to paint is the copying of master works in the museums.

You go through the Civil Rights struggle, everybody knew the songs - 'We shall overcome.' Everybody would sing it. Music helped us. James Brown, 'Say It Loud - I'm Black and I'm Proud.' They helped black people figure out how to navigate what was a very treacherous place in America for them.

Hold yourself responsible for a higher standard than anybody else expects of you. Never excuse yourself. Never pity yourself. Be a hard master to yourself-and be lenient to everybody else.

To the people I forgot, you weren't on my mind for some reason and you probably don't deserve any thanks anyway.

I came to love silence, because it's so rare, and it's now my favorite aural condition.

Enlightenment means waking up to what you truly are and then being that.

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Small things start us in new ways of thinking

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Golf is a game of ego, but it is also a game of integrity: the most important thing is you do what is right when no one is looking.

There is no crime in anyones blood any more than there is goodness in the blood of others. Criminals are not born. They are made by hunger want and injustice.

My idol was Jack Benny and he was the master of subtlety and timing.

A lot of people talk about the Fab Five, and they were wonderful, one of the best teams you'll ever see in college basketball. But the '89 team is the best one to ever play at Michigan in my opinion because they won the national championship. Winning a championship is winning a championship.

Not houses finely roofed or the stones of walls well builded, nay nor canals and dockyards make the city, but men able to use their opportunity.