Several years ago those inflicted with astigmatism had to rely on eye glasses for their vision correction. Today that limitation is merely a memory of the past thanks to several advancements in contact lens technology. Since astigmatism is the result of an irregular shaped lens or cornea, a contact lens must designed to fit the atypical shape of the eye closely and comfortably in order to provide clear, crisp vision.
A contact lens that is designed to fit an irregular shape and correct astigmatism is called a toric lens. The unique curvature of eyes with astigmatism require that contacts meet the wearer's specific vision correction needs since a slight variation can result in an ill-fitting lens. The difference between a toric lens and a spherical one is that the toric has two different powers - one power corrects the astigmatism while the other corrects the nearsightedness or farsightedness. While toric lenses are very similar to spherical contacts the addition of the second power makes their design more complex.
Power Sander
Because of their complex design, new features, materials and other developments in contact lens technology are usually applied to torics after they have been applied to spherical lens for a given period of time. When disposable lenses were initially introduced to the market, those with astigmatism had to wait in line while the technology was applied to torics. The same thing happened when colored contacts first became popular amongst contact lens wearers.
Currently patients seeking to correct astigmatism have as a wide selection of contact lenses to choose from for their vision correction needs as those who wear spherical lenses. Toric lenses can be made from the same materials used to make spherical lenses that correct nearsightedness or farsightedness; they just have a different shape or curvature.
Contacts to correct astigmatism are available in soft, rigid gas permeable or silicone hydrogel lenses. Today toric lens wearers can choose between disposable or frequent replacement, colored or non-colored lenses and even bifocals or multifocals.
Christmas Sales DEWALT D26451K 3 Amp 5-Inch Random Orbit Sander with Cloth Dust Bag 201
Dec 13, 2011 04:46:57
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Christmas Sales DEWALT D26451K 3 Amp 5-Inch Random Orbit Sander with Cloth Dust Bag Feature
- 3-amp motor operates at 12,000 opm, providing ideal sanding speed for smooth finish
- Textured anti-slip top and body grip provide ultimate comfort and control during use
- Controlled Finishing System maintains controllable pad speed and minimizes gouging during start up
- Dust-sealed switch protects against dust ingestion for longer switch life
- High-capacity dust bag with built-in vacuum adapter provides maximum dust collection with or with out a vacuum
Christmas Sales DEWALT D26451K 3 Amp 5-Inch Random Orbit Sander with Cloth Dust Bag Overview
Built to deliver smooth, clean finishes, the DEWALT 5-Inch Random-Orbit Sander features DEWALT's trademarked Controlled Finishing System along with a 3.0 amp motor and an easy-to-control body with textured grips. A dust bag that helps keep your work space clean , a sealed-switch, and sealed ball bearings round out the sander's durable design.
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 This orbit sander has a powerful 3.0 amp motor and comes in durable kit box. View larger. |
This sander's 3.0 amp motor delivers 12,000 opm, a sanding speed that's ideal for creating smooth finishes on a variety of work pieces. Its random-orbit motion and 3/32-inch orbit prevent unsightly swirls while allowing for significant material removal. The DEWALT Controlled Finishing System (CFS) controls pad speed and minimizes gouging during start up, contributing to clean, consistent finished surfaces.
Since achieving a great finish is also about how well you're able to control your sander, this tool features a textured anti-slip top and body grip. This keeps you comfortable during extended periods of use and allows for excellent control--no matter how tough the job at hand is. The sander also features a dual-plane counter-balanced fan that improves handling and works to reduce user fatigue, and it weighs in at an easy-to-maneuver 3.4 pounds.
Durable, Versatile Design and Quick Disk Changes
Sanding produces a lot of dust, which can be hard on electronic and mechanical tool parts over time. This orbital sander's dust-sealed switch and sealed 100 percent ball-bearing construction combine to keep dust and debris away from critical components and ensure a longer tool life.
For added convenience, the sander accepts 5-inch, 8-hole hook and loop abrasive paper. This setup allows sanding disks to be switched back and forth quickly and easily, so you never have to choose between maintaining an efficient workflow and utilizing the perfect grit.
Convenient, Integrated Dust Management
Dust management is critical when performing sanding and stripping tasks, and DEWALT has it covered with a high capacity dust bag. This bag features a built-in vacuum adapter, so you can choose to utilize it with or without a shop vac or an extractor based on where you are and what applications you tackle most.
This 5-Inch Random-Orbit Sander comes with a DEWALT warranty package that includes a three-year limited warranty, a one-year free service contract, and a 90-day money back guarantee.
What's in the Box
D26451K DEWALT 5-Inch Random-Orbit Sander, dust bag with vacuum adapter, and kit box.
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