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.

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.

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 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.

Make your creed simply and broadly out of the revelation of God, and you will keep it to the end.

I feel very strongly that the Democratic Party has, in the past, been the party of the future. I think when you look at Social Security and Medicare, when you look at the civil rights movement, the women's movement, I think the Democratic Party has always been in the forefront of change.

The laziest man I ever met put popcorn in his pancakes so they would turn over by themselves.

There is also work to do in the evolution of a stable family life and values, and in ensuring that the Nigerian family is built on core values that will form the bedrock of the future society. We must showcase the ideals of family life and be models of family values.

Life Among the Savages is a disrespectful memoir of my children.

I've done stuff in the past and followed in the footsteps of my heroes, and each time, it felt a little bit surreal.

It's an endless proving of myself, that I really am a musician, that I have something to offer in the room. That women can be musicians, women can be rock stars, women can be more than an objectified idea of a pop star.

Growing up in the ghetto is pretty hard. It's poverty; it's frustration.

My goal was for acting to become my main income. I would say to myself, 'I'm good enough.' That became my mantra.

We can choose a leader who will fight every day to make America great again.

When I was fifteen, I used to run around reading 'Adbusters' and dumpster diving, trying to find ways to make the U.S. government unwind into chaos through hardcore punk and metal.

Nothing is more costly, nothing is more sterile, than vengeance.

As you're growing up, it's odd, because directors don't expect you to grow up. They think you'll be young forever, but as an actor, there is an awkward period when you're too young for old or too old for young, and it can be an odd time.

There's never any pressure on the music having to be something.

What is it to keep kosher? Is it eating kosher potato chips? Kosher is a bigger idea. I think it's about being healthy. But according to some people, it's about not eating this food because it's forbidden by the Jewish law. My view of the halachah changed a little bit. The laws are there hopefully to be a tool.

I'm really good at pretending.

I always tell people I went to the Harvard School of Comedy in front of America.

When we were filming, I thought that I was Peter Pan, you know? I thought I was the coolest kid in the world, so I wound up being the coolest kid in the world.

The heart is a muscle, and you strengthen muscles by using them. The more I lead with my heart, the stronger it gets.

Symmetry, by surrounding us, makes itself invisible.

Wiffle ball was my first experience hitting left-handed.

We must let go of the life we had planned so as to have the life that is waiting for us.

If I hear someone say something, and they're 100 per cent about it, then it's almost inevitable that I'll take the opposite view. I guess I feel at odds with things like society. Absolutism is always a trigger for me.

My most difficult thing so far, to be brutally honest, has been to waltz as if I knew what I was doing.