EyeMark Newsletters

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Interesting facts about your eyes

Your eyes: Are the most complex organs you possess except for your brain. Are composed of more than two million working parts. Can process 36,000 bits of information every hour. Under the right conditions, can discern the light of a candle at a distance of 14 miles. Utilize 65% of all the pathways to the brain. Can instantaneously set in motion hundreds of muscles and organs in your body. In a normal life-span, will bring you almost 24 million images of the world around you. The external muscles that move the eyes are the strongest muscles in the human body for the job that they have to do. They are 100 times more powerful than they need to be. The eye is the only part of the human body that can function at 100% ability at any moment, day or night, without rest. Your eyelids need rest, the external muscles of your eyes need rest, the lubrication of your eyes requires replenishment, but your eyes themselves "never" need rest. But please rest them!
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INTERESTING FACTS ABOUT YOUR EYES

Your eyes: Are the most complex organs you possess except for your brain. Are composed of more than two million working parts. Can process 36,000 bits of information every hour. Under the right conditions, can discern the light of a candle at a distance of 14 miles. Utilize 65% of all the pathways to the brain. Can instantaneously set in motion hundreds of muscles and organs in your body. In a normal life-span, will bring you almost 24 million images of the world around you. The external muscles that move the eyes are the strongest muscles in the human body for the job that they have to do. They are 100 times more powerful than they need to be. The eye is the only part of the human body that can function at 100% ability at any moment, day or night, without rest. Your eyelids need rest, the external muscles of your eyes need rest, the lubrication of your eyes requires replenishment, but your eyes themselves "never" need rest. But please rest them!
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626 Hits

TO SEE OR BE SEEN?


Sunglasses have been regarded as a fashion accessory for many years, but until fairly recently, prescription glasses have been more of a functional necessity than a fashion statement. Over the past few years, however, there has been a shift towards eyewear as a fashionable accessory and expression of personal style . In fact, a report in a New York newspaper reveals that in Hong Kong the young and trendy are wearing fashion frames without lenses to add style to their outfits! Some of the current eyewear trends include: Back to nature – natural materials such as raffia, leather and wood are being used to accent plastic and metal frames, and designs include animal prints and floral colours on temples and even glasses cases. Etched temples – intricate patterns, fine detail and varied textures bring a unique touch of elegance to the look and feel of frames. Colour – the general trend is towards bright bold colours and combinations of colours, with green, bronze and purple being the colours of choice. Shape – old is new, as the retro look in all areas of fashion makes a comeback, in strong contrasting colours and new fashion shades. Bling – crystals, stones and beads add a sparkle to both prescription eyewear and sunglasses, but are more subtle and delicate than the bling in other fashion accessories. Edge – in the move away from rimless frames, floating lenses, cut-outs and split temples add a soft fresh look. Your Glasses and You? Fashion trends are...
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618 Hits

SUNSCREEN FOR YOUR EYES


Most of us are aware of the danger of the sun’s ultraviolet (UV) radiation on our skins, but there is also a risk of damage to our eyes. Extended exposure to the sun's UV rays has been linked to conditions including cataracts, macular degeneration, and others. While many people refer to ultraviolet radiation as UV light, this is technically incorrect because we cannot see UV rays. There are three categories of UV rays: UVC rays are the most harmful, but fortunately the atmosphere’s ozone layer blocks virtually all of these; UVB rays in low doses stimulate the production of melanin creating a suntan, but in higher doses cause sunburn and premature aging of the skin, and are partially filtered by the ozone layer; UVA rays have the lowest energy but can pass through the cornea, reaching and damaging the lens and retina. Outdoor Risk Factors Anyone who spends time outdoors is at risk for eye problems from UV radiation, but this exposure does depend on a number of factors. Geographic location - UV levels are greater in tropical areas near the earth's equator. The farther you are from the equator, the smaller your risk. Altitude - UV levels are greater at higher altitudes. Time of day - UV levels are greater when the sun is high in the sky, typically from 10 a.m. to 2 p.m. Setting - UV levels are greater in wide open spaces, especially when highly reflective surfaces are present, like snow and sand. UV exposure is...
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INTERESTING FACTS ABOUT YOUR EYES

Your eyes: Are the most complex organs you possess except for your brain. Are composed of more than two million working parts. Can process 36,000 bits of information every hour. Under the right conditions, can discern the light of a candle at a distance of 14 miles. Utilize 65% of all the pathways to the brain. Can instantaneously set in motion hundreds of muscles and organs in your body. In a normal life-span, will bring you almost 24 million images of the world around you. The external muscles that move the eyes are the strongest muscles in the human body for the job that they have to do. They are 100 times more powerful than they need to be. The eye is the only part of the human body that can function at 100% ability at any moment, day or night, without rest. Your eyelids need rest, the external muscles of your eyes need rest, the lubrication of your eyes requires replenishment, but your eyes themselves "never" need rest. But please rest them!
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RETINITIS PIGMENTOSA

Normal View
What is retinitis pigmentosa? Retinitis pigmentosa is a degenerative eye disease, which affects the light receptors of the retina, known as the rods and cones. As the disease progresses, these light receptors are destroyed, reducing the eye’s ability to detect light. It usually does this from the outside inward, but in some cases receptors may be affected from the centre outward, or in sporadic patches. The most challenging aspect of retinitis pigmentosa is that it is not stable. Sufferers must continually adapt to less and less sight, and the impact this has on their lives and relationships. NORMAL VIEW VIEW WITH RETINITIS PIGMENTOSA What causes retinitis pigmentosa? Retinitis pigmentosa is an inherited condition which involves both eyes. If it starts in one eye, the other eye usually develops the same condition later. A thorough genetic history is advisable, often with the aid of a genetic counselor, to determine the risk of future generations acquiring the disease. Retinitis pigmentosa is usually diagnosed during the teenage years but may be present at birth. Cases that are diagnosed later in life are often milder and may progress more slowly. The disease is sometimes associated with other genetic conditions. What are the signs and symptoms of retinitis pigmentosa? The patient first notices increasing difficulty with night vision, followed by difficulty with peripheral vision, often years later. Slowly progressive constriction of the visual field eventually leads to 'tunnel vision'. A small area of central vision in both eyes usually persists for years but in the...
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GETTING USED TO YOUR GLASSES


When you put on a new pair of glasses for the first time, you may expect to see everything perfectly, but for many people there is a period of adjustment to new glasses. This can be compared to wearing new shoes which may take a little time before they feel comfortable. Because our brains interpret what our eyes see, it often takes a while for the eyes and the brain to coordinate getting used to a new prescription. Symptoms The symptoms of wearing new glasses vary, and it is possible that you may have no problems at all. At first your vision may be a little blurred and your eyes may feel tired quickly. You may need to read at a different distance than before, and you may experience headaches. Time frame The length of time for adjustment depends on a number of factors, such as the strength of the prescription, a change in the prescription, whether you are wearing glasses for the first time, if you have changed the size of your frame, or if you have changed from contact lenses to glasses. Even if your prescription hasn’t changed, you may need to adjust to a new lens type. It is usually easier to get used to single-vision (unifocal) lenses, and this should take about a week, whereas adjusting to multifocal, bifocal or special glasses can take several weeks longer. If you have glasses for the first time, the best way to get used to them is to wear...
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Interesting facts about your eyes

Your eyes: Are the most complex organs you possess except for your brain. Are composed of more than two million working parts. Can process 36,000 bits of information every hour. Under the right conditions, can discern the light of a candle at a distance of 14 miles. Utilize 65% of all the pathways to the brain. Can instantaneously set in motion hundreds of muscles and organs in your body. In a normal life-span, will bring you almost 24 million images of the world around you. The external muscles that move the eyes are the strongest muscles in the human body for the job that they have to do. They are 100 times more powerful than they need to be. The eye is the only part of the human body that can function at 100% ability at any moment, day or night, without rest. Your eyelids need rest, the external muscles of your eyes need rest, the lubrication of your eyes requires replenishment, but your eyes themselves "never" need rest. But please rest them!
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622 Hits

How Do They See


We take for granted how we see the world around us, but have we ever wondered about how animals see? Recent scientific investigation has revealed an amazing world of vision diversity in the animal kingdom. Here are a few examples. Horses have an amazing range of vision due to their binocular vision, with their eyes located on the sides of their heads. But they cannot see what is right in front of them between their eyes, which is why they often look down as they walk. Old world monkeys and apes mainly see as humans do, so they pick up red, green, and blue. But many new world monkeys do not. In fact, in the same family of monkeys there can be up to six different types of colour blindness. As with their human cousins, color blindness is more common in males than in females. Many birds can see differently. Pigeons, for example, can see literally millions of different hues and are thought to be better at color detection than any animal on earth. Cats and dogs do not have strong vision. They rely primarily on scent and sound. Cats in particular have weak vision, and are colour blind. Dogs can sometimes tell the difference between yellow and blue, for example. Cats are best at focusing narrowly on one object (for hunting), and they do have better night vision than humans. Both dogs and cats have better perspective and depth perception, due to the placement of their eyes, than human...
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“PINKEYE”


Conjunctivitis, also known as pinkeye, is an inflammation of the conjunctiva, the thin clear tissue that lies over the white part of the eye and lines the inside of the eyelid. What Causes Conjunctivitis? Conjunctivitis has a number of different causes, including: Viruses Bacteria Irritants such as shampoos, smoke, and pool chlorine Allergies, like dust, pollen, or an allergy that affects some contact lens wearers Conjunctivitis caused by some bacteria and viruses can spread easily from person to person, but is not a serious health risk if diagnosed promptly. Conjunctivitis in newborn babies, however, should be reported to a doctor immediately. What Are the Symptoms of Conjunctivitis? The symptoms differ based on the cause of the inflammation, but may include: Redness in the white of the eye or inner eyelid Increased tears Thick yellow discharge that crusts over the eyelashes, especially after sleep Green or white discharge Itchy or burning eyes Increased sensitivity to light If you have any of these symptoms, see your optometrist, who will conduct an examination of your eyes and may use a cotton swab to take a sample of fluid from the eyelid to be analyzed in a lab. Bacteria or viruses that may have caused conjunctivitis can then be identified and proper treatment prescribed. How Is Conjunctivitis Treated? The treatment for conjunctivitis depends on the cause. Bacteria : Conjunctivitis caused by bacteria is treated with antibiotics, in the form of eye drops, ointments, or pills. The infection should improve within a week. Take or...
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619 Hits