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Asthma
So you have asthma? Think you can't exercise safely? Read on, my friend, and discover how you *can* do so safely and how your body will benefit from the exertion! Asthma is a chronic lung disease that is marked by the following characteristics that...
How to Break in a Baseball Glove
Baseball gloves are available in almost every size, color and material known to man. Traditional gloves are made from leather or faux-leather and more recently from buffalo and kangaroo hides. No matter what the material, baseball gloves need to be...
Ice Hockey Fights Will Always Bring Fans to the NHL Games
However, if you look at it from a hockey fan’s point of view it is ice hockey fights that make hockey and the NHL what it is. Our sport is different than any other sport and that is also the reason why we are such huge hockey fans. Fights bring...
Making Bonds: The Steroid Scandal
Public opinion these days seems to be swaying towards an acceptance of steroid use in baseball. People are not asking so much about if it is being done, but rather how can you actually prove it. There is very little debate over the consequences of...
Total Bases
Total Bases
This statistic fascinates me. For me it shows the difference
between a slugger and a home run hitter. There have been players
that have hit home runs that I do not consider good hitters.
But when they are slugging, they get all...
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Contact Lenses A Better Vision Option
There are over 34 million contact wearers in America. The idea of contact lenses has been around for hundreds of years. It is said that the first person to conceptualize the idea of contact lenses was Leonardo da Vinci in the early 1500's. It wasn't until 1971 that soft contact lenses entered the market, followed by GP or gas permeable contact lenses in 1978. Extended wear contacts received FDA approval in 1981 and disposable contacts were introduced in 1987.
Today's contact lenses do more than improve vision. Some contacts are specifically manufactured to change eye color only. With dozens of different colors available some contact lens wearers change their eye color slightly, and some go for a totally different look, such as brown eye to green or blue eye to brown. There are contacts that have special effect lenses that produce effects on the eye such as jaguar and zebra stripes, a yellow cat eye with a vertical pupil, black spiral, stars & stripes and fire. The FDA considers lenses described above as cosmetic only. Depending on your state you may not need a prescription to purchase them. If your contact lenses are to be corrective then you will require a prescription to purchase them.
Another recent advancement in contact lenses is light filtering lenses. These lenses work as do lens specific sport sunglasses by filtering certain lights such as blue light, so that baseballs, golf balls and tennis balls are easier to see. There are also
contact lenses that block ultraviolet light. Ultraviolet light has been linked to cataract formation.
There are many types of contact lenses available, hard contacts, gas permeable lenses and soft lenses. We will now give you some advantages, and disadvantages of each kind. Hard contact lenses are less costly in the long run as they aren't replaced often, and actually allow the wearer better, clearer sight. Soft contact lenses are easier to fit than hard lenses. Gas permeable or GP lenses allow you eyes to breath better and will not dry your eye out as much as soft lenses. Soft lenses are comfortable from the moment you put them on whereas hard lenses at first are very uncomfortable and take some getting used to.
There are safety concerns with any type of contact lenses. Extended wear contact lenses, soft or rigid, when worn long term and overnight can lead to risk of infection and corneal ulcers which can permanently damage eyesight. Most ophthalmologists believe it is better for your eye that you do not wear any type of contact lens overnight. Cleanliness if also of utmost importance for lens wearers. To reduce the risk of infection you should only use commercial sterile saline solutions when cleaning your contact lenses.
It is best to check with your licensed ophthalmologist to discuss which contact lens is best for you.
About the Author
Article courtesy of http://www.lense-shopper.net
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