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.

All men equal in rights and duties, all men equally responsible for the destiny of mankind - what a dream!

No matter how thoroughly a person may have learned the Greek alphabet, he will never be in a condition to repeat it backwards without further training.

Pose a political threat to Business As Usual, and sooner or later, mostly sooner, someone will try to kill you.

There may be people who have more talent than you, but there's no excuse for anyone to work harder than you do - and I believe that.

One of the fantastic things about books, fiction or non-fiction, is the way they give you a chance to look into different lives.

What you find in the theatre is that if you're good, no matter what color you are, the audience will buy that - whoever you are.

Grace is knowing that there is nothing you can do to make God love you more. And there is nothing you could ever do that would make God love you less.

Privacy is not negotiable.

Just because something isn't a lie does not mean that it isn't deceptive. A liar knows that he is a liar, but one who speaks mere portions of truth in order to deceive is a craftsman of destruction.

Getting to do what I think was my fifth BBC drama with Nikki Amuka-Bird - we've done 'Shoot The Messenger,' 'Five Days,' 'The No. 1 Ladies' Detective Agency,' 'Born Equal' and now 'Small Island' - was another highlight for me. And filming in Jamaica was great, too.

I don't have that drive to be in this field, climbing up, doing bit parts in movies to make a big movie. But I'm lucky I get to also do acting - it's fun. I should probably just take an acting class on the weekends - that would be enough for me.

Growing up as an amateur, I wasn't much of a power puncher. I was more of a speed guy.

You can't have rock and roll without drugs, you can't have rock and roll without sex.

When I was starting out and had to cut my teeth and build my resume to get in, I had to basically work for free on a lot of things.

Movie studios are owned by giant corporations. They care about money; they don't care about movies.

Nothing is more dreadful than private duels in America. The two adversaries attack each other like wild beasts. Then it is that they might well covet those wonderful properties of the Indians of the prairies - their quick intelligence, their ingenious cunning, their scent of the enemy.

'The Help' sheds light on a certain truth in America, but the tragedy is if we don't get a chance to contrast it with other points of views. 'The Butler' does that, 'Red Tails' does that and that's what '96 Minutes' does.

History: the category of human phenomena which tends to catastrophe.

Be satisfied, and pleased with what thou art, Act cheerfully and well thou allotted part; Enjoy the present hour, be thankful for the past, And neither fear, nor wish, the approaches of the last.

Safeguarding the rights of others is the most noble and beautiful end of a human being.

Adversity happens to everyone and it is not an excuse for abandoning our dreams.

Life is going to unfold as it should because life always does.

A ship at sea is its own world. To be the captain of a ship is to be the unquestioned ruler of that world and requires all of the leadership skills of a prince or minister.

A gentleman is any man who wouldn't hit a woman with his hat on.