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.

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.

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 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 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.

What the heart has once owned and had, it shall never lose.

Fred Astaire was my dream dancer.

When I started acting, everyone told me to get a backup in case it didn't work out; if there was something else I could have done, I would have done it. Acting should never be your chosen path if you can help it.

Unless one lives and loves in the trenches it is difficult to remember that the war against dehumanization is ceaseless.

We come nearest to the great when we are great in humility.

The inevitable has always found me ready and hopeful.

I began to fear that the Graham work was not in lots of ways sufficient for me. I suppose it came about from looking at other dancing and being involved with the ballet - something about the air and the way she thought about dancing.

The best kind of happiness is a habit you're passionate about.

My early years as a political activist were dominated by the poll tax.

There is no substitute for a real location when you're trying to shoot the jungle. You can't just go anywhere. You've got to go where it's lush and green and there really is those mountain ranges, the trees and the ocean.

Technology is neutral and sterile. Now, technology is the nature of modern man; it is our environment and our horizon. Of course, every work of man is a negation of nature, but at the same time, it is a bridge between nature and us. Technology changes nature in a more radical and decisive manner: it throws it out.

Nowadays, I could not care less about making other people like me. I'm a good person, I don't need to do that anymore

You know no one will ever accuse me as having the same policies as George W. Bush.

If you see me once, you cannot confuse me with another.

Being asked to support humane meat means being asked to support the suffering of animals in transport, to approve of treatment that causes them palpable fear, their bodies shaking and their eyes wide as saucers, as they are slung by their legs into crates that are slammed onto the back of a truck.

No matter how love sick a woman is she shouldnt take the first pill that comes.

Now how many people in their heart of hearts in that community want to see the demise of this country? How many would cheer, not out loud maybe, but in their heart when things like 9/11 occur and I'll tell you; it's a majority among them.

I wrote 'All is Lost' while editing 'Margin Call'. I did that long before I knew if I was ever going to get to make another movie.

Those in supreme power always suspect and hate their next heir.

Make the hard ones look easy and the easy ones look hard.

Every man over 40 should have a PSA test each year.

Any child soldier has to go through a lot of love, care and understanding to become normal.

You can call me whatever you want to call me, but I am an American. No one can take that away from me. No, no one can.

It's the warmest, loveliest community I've ever set foot in. For me, it's the perfect place to live. It's the best part of America.