By John Martin One of the many approaches used to correct vision by people is wearing contact lenses. They are normally alternatives for s...
One of the many approaches used to correct vision by people is wearing contact lenses. They are normally alternatives for sunglasses because of factors like size among others. Approximately 45 million of the people in the US wear these lenses and out of these, females of different ages account for two thirds. When in search of Contact lenses Columbus should be given priority.
In the US, these devices are classified under medical devices by the FDA. As such, they are strictly regulated in the country. They must meet strict standards enforced by the FDA in order for them to be made and sold. Several different kinds of these devices have been introduced in the market over the years. Different brands or types of the product have different times at which they were invented and introduced to the market.
Firstly, several kinds of contact lens exist. Some of them are PMMA, hybrid, gas permeable, silicone hydrogen, and soft contact lens varieties. In the year 1938, hard or rigid lenses were introduced in the US market and their production is still ongoing. Each year, better varieties are being introduced. In 1971, soft lenses were introduced for the first time. Statistics show that soft contact lens varieties are used by more than 90 percent of all wearers of these devices.
Generally, soft lens varieties are made by use of materials called hydrogels. They are water-containing plastics that are gel-like. The lens is very comfortable to the the eyes because it is pliable and very thin. The introduction of these lens varieties made the popularity of wearing contact lenses to increase. The feeling is adapted to very fast by the eye which makes them very comfortable.
An advanced version of the soft lens is the silicone hydrogel lens. These kinds of lens allow increased amount of oxygen to penetrate them to the cornea as it features more porosity. This therefore creates more comfort and a healthy environment for the eyes for those wearing them. The devices can be said to be still relatively new in the market because they were only introduced in 2002. In the US, the devices are currently the most prescribed.
Gas permeable lens also goes by the name RGP or GP lens. It is a rigid variety of lens that is designed to look and feel like PMMA lenses. However, unlike most rigid models, it is porous to oxygen. The fact that they are porous makes them to be fitted closer to the eye than other rigid varieties. These devices were introduced in 1978 and have since become a more popular replacement for rigid PMMA devices.
Persons that involve themselves in sports find contact lens a very good alternative. One can wear them to enhance sight without having to worry about safety issues. It is actually difficult to realize if one is wearing the devices or not. Wearing the devices also boosts the esteem of a child by positively affecting their attitude towards their appearances.
However, knowing that particular instructions come with wearing contact lens is important. Failure to follow instructions and poor handling are known to cause severe problems to individuals. Many individuals get serious illnesses annually due to using contact lenses.
In the US, these devices are classified under medical devices by the FDA. As such, they are strictly regulated in the country. They must meet strict standards enforced by the FDA in order for them to be made and sold. Several different kinds of these devices have been introduced in the market over the years. Different brands or types of the product have different times at which they were invented and introduced to the market.
Firstly, several kinds of contact lens exist. Some of them are PMMA, hybrid, gas permeable, silicone hydrogen, and soft contact lens varieties. In the year 1938, hard or rigid lenses were introduced in the US market and their production is still ongoing. Each year, better varieties are being introduced. In 1971, soft lenses were introduced for the first time. Statistics show that soft contact lens varieties are used by more than 90 percent of all wearers of these devices.
Generally, soft lens varieties are made by use of materials called hydrogels. They are water-containing plastics that are gel-like. The lens is very comfortable to the the eyes because it is pliable and very thin. The introduction of these lens varieties made the popularity of wearing contact lenses to increase. The feeling is adapted to very fast by the eye which makes them very comfortable.
An advanced version of the soft lens is the silicone hydrogel lens. These kinds of lens allow increased amount of oxygen to penetrate them to the cornea as it features more porosity. This therefore creates more comfort and a healthy environment for the eyes for those wearing them. The devices can be said to be still relatively new in the market because they were only introduced in 2002. In the US, the devices are currently the most prescribed.
Gas permeable lens also goes by the name RGP or GP lens. It is a rigid variety of lens that is designed to look and feel like PMMA lenses. However, unlike most rigid models, it is porous to oxygen. The fact that they are porous makes them to be fitted closer to the eye than other rigid varieties. These devices were introduced in 1978 and have since become a more popular replacement for rigid PMMA devices.
Persons that involve themselves in sports find contact lens a very good alternative. One can wear them to enhance sight without having to worry about safety issues. It is actually difficult to realize if one is wearing the devices or not. Wearing the devices also boosts the esteem of a child by positively affecting their attitude towards their appearances.
However, knowing that particular instructions come with wearing contact lens is important. Failure to follow instructions and poor handling are known to cause severe problems to individuals. Many individuals get serious illnesses annually due to using contact lenses.
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If you require assistance with choosing the right contact lenses Columbus eye care center provides quality services at your disposal. To get a better idea of the products on offer, visit http://www.riversideeyectr.com/products.
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