Optical,Lab,See,How,One,Can,He health Optical Lab -- See How One Can Help You
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An optical lab makes a variety of products for your eye doctor, such as frames and lenses for glasses as well as contacts. Staffed by professionals and operating under strict quality control standards, such labs do not deal with the public, selling only to eye care providers. Read on to learn about some of the most common services they provide.When your optician prescribes glasses for you, he will send the order to an optical lab. All licensed eyeglass manufacturers must be members of the National Optical Association, which is under the control of the FDA. Glass was typically used to make lenses until the 1950s when plastic was found to be a safer, lighter, and more comfortable substance. The technician will compare plastic blanks to determine the best match for your prescription, and then the remaining prescription strength will be ground into the lens. After additional grinding to set the degrees and curves needed to acquire the optical center of the glasses, the lens will be shaped and polished. The finished product will be as unique as you are, since each pair is made according to your specific prescription, including vision correction, eye size, face shape, frame style and color, and any treatments prescribed. Contacts are also produced in these facilities, including both the soft and gas permeable kind. The soft kind is made of hydrogel, which is a hydrophilic plastic polymer that absorbs water, causing the lens to become soft and pliable. In addition, silicone hydrogel is used for the newest lenses on the market, which are highly oxygen-permeable. Soft contacts are produced using a lathe cutting process, which involves mounting the material on a spinning shaft and then shaping it with a cutting tool controlled by a computer.Injection molding is another way to make the lenses, which involves heating the material to a molten state and then injecting it into a pressurized mold. After the lens is cooled and removed from the mold, the edges are polished until they are smooth, and the material is hydrated.Your doctor may have prescribed rigid gas permeable contacts for you, as some eye conditions respond better to this type of lens, although a strict care routine is required. This type of contact is made using an oxygen-permeable plastic polymer that contains both silicone and fluorine. However, the lens contains very little water and therefore remains rigid in your eye. Gas permeable lenses are also more expensive to make than soft contacts since they are custom made according to your doctor's prescription using a computerized lathe cutting process. Once your doctor receives the lenses, he needs to soak them in a gas permeable contact care solution to condition the surface of the lens prior to giving them to you. A hybrid contact combines the two types, with a rigid gas permeable plastic used centrally surrounded by an area of soft contact material. These materials are bonded together to prevent separation, then cut and hydrated. Your practitioner can provide a solution for many vision problems with technology available from an optical lab. Schedule a visit with your doctor to find out what is available to help you.
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