Archive | November, 2011

How Computer Or Mobile Brightness Affect Vision

16 Nov

Our world has been transformed with the arrival of computers and mobile phones. Thanks to technological advancements, we live in a world where everything is easily accessible, faster, cheaper and quicker. Unfortunately, all this advancement has come at a cost, our health. And vision-related ill-effects from computers and mobile devices must be guarded against. 

So what exactly are the ill-effects of computers and mobile phones on our eyes and our vision? Let us take the computer to start with. Computers, their screens to be more specific, are made up of thousands of tiny pixels that are constantly moving. Our eyes in turn are not naturally able to set focus on these constantly moving pixels, and hence we try to focus on an area behind the actual screen. Therefore, in order to work on a computer, our eyes need to keep on fluctuating focus between their natural point of focus and the pixels on the screen. And this tires the eyes and causes a lot of wear and tear.

 

As a result, we suffer from irritation, which may range from a number of things like headaches, dry eyes, blurred vision, problems in focusing and faulty color perception, to something as severe as glaucoma. How does one avoid this? One must reduce the intensity of the computer’s screen by attaching a filter or by getting an eye-friendly screen. Above all, one must try to reduce the amount of computer usage or take frequent breaks. 

Similarly with mobile phones too, the eyes suffer the most from extended usage. The electromagnetic waves that are emitted by a mobile phone can be extremely damaging to the eyes. It has been studied and well documented that these cell phone waves can have a damaging effect on the various parts of the eye, including the retina and the cornea. Moreover, they can cause cataract too.

 

That is just the fall out from the waves of the cell phone. The cell phone screen itself has its own pitfalls that are similar to the ill-effects caused by computer screens. Only in this case, the strain is of a different kind because cell phone screens are much smaller than computer screens. So not only are the eyes dealing with the pixels, but are inherently stressing to be able to view content on a tiny screen too. 

The solution again is reduced usage. There is nothing more effective than controlling usage to reduce and negate the effects. To say that we can now lead our lives without computers and mobile devices would be a fallacy. But at least we can protect ourselves by being judicious about their usage.

Image Courtesy: 

Mobiles: http://bit.ly/t2dNcJ

Laptop: http://bit.ly/utiK2R 

Eye Wear For Bike Riders

11 Nov

All over the world, bikers are obsessed with their mean machines. If there is anything a serious biker is concerned with besides his bike, it’s his clothing. And a very important part of this apparel, not just from a style point of view, is a pair of sunglasses. For a biker, a great pair of sunglasses is not just about style. In fact, it is a safety and health necessity that must be chosen with extreme care. So what should a biker look for while buying sunglasses? 

Protection: The key element for a biker’s sunglasses is protection. Unlike a car’s driver, a biker is out in the open and is in constant contact with the elements. At the very least, this means harsh UV rays. And depending on weather conditions, it can mean rain, heat and cold. So a biker should always be aware that the primary aim of his sunglasses should be to provide the maximum possible protection from these elements.

 

Build over style: Since sunglasses for a biker are not just a style product but a crucial protective tool too, they must not merely focus on pure aesthetics but must also be strong, sturdy and well-built. Therefore, a biker must always ensure that they are not flimsy and invest a little extra money and sacrifice some style if needed in lieu of a rock solid pair of sunglasses that won’t break under physical pressure from natural elements. 

Comfort: Usually, sunglasses need to be worn by bikers for extended periods of time. It’s one thing to briefly wear sunglasses while out in the sun for a short time and quite another to wear them for a ride that lasts several hours. Hence, the pair that a biker chooses must rest comfortably on the nose and not become a weighty obstruction. Choose comfort and you will be choosing peace of mind. 

Search, search, search: So how does one identify the perfect pair of riding glasses that meet all the aforementioned criterias? Look, look and then look some more. Don’t be swayed by deals or style alone. There are innumerable brands that make specialized riding glasses. So give yourself time, patience and a decent budget. Scan the market threadbare until you find that perfectly stylish, but strong and protective, pair. 

A great idea is to go to a renowned and well stocked optician, such as Lawrence & Mayo, where not only will you see a wide range of choices under one roof, but also interact with seasoned opticians who will be happy to give you expert advice and guidance in your quest to get that super pair of glasses for riding. Choose wisely and ride safely!

Image courtesy: (bikers) http://bit.ly/tqJosX


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