| There are so many different types of sunglasses on | | | | polycarbonate plastic, and acrylic plastic. The highest |
| the market today that finding the right pair to fit one's | | | | quality of these materials, and the material suggested |
| needs can be a very daunting task. The best pair of | | | | for persons concerned about vision quality is glass. |
| sunglasses should offer protection from UV rays, be | | | | Glass lenses are also the most scratch resistant, but |
| extremely durable, look good, and serve any special | | | | they are prone to shattering when hit. The other three |
| needs that the wearer might have. Once one has | | | | types of materials are all plastic and impact resistant. |
| found the right pair, they should be so comfortable that | | | | Acrylic plastic must be specifically treated in order for |
| the wearer may even forget that he or she is wearing | | | | it to protect the wearer from UV rays. |
| them! There are a few elements to consider when | | | | Lenses also vary in tint. A darker tint will absorb a |
| buying sunglasses. Frame and lens options, sun | | | | significantly higher amount of light than a lighter tint. |
| protection, and the purpose of the sunglasses should all | | | | Different color tints also serve different purposes. An |
| be considered. | | | | amber or orange tint will reduce blue light which is the |
| The frame is essential because it holds the glasses | | | | chief component of glare. Therefore, these sunglasses |
| together and provides comfort and stability. Frames | | | | are popular in sports that have a high amount of glare |
| have two parts with different functions. The glasses | | | | (boating, fishing, and skiing). Brown tints are good for |
| are kept firmly on one's ears via the arms of the | | | | driving, and Gray is good for golfing, running, or cycling. |
| frame. The face of the frame keeps the lenses | | | | Different tints have different abilities to reduce glare. |
| aligned with the eyes. There are three different types | | | | The best suggestion is to take the sunglasses use into |
| of frame materials: plastic, nylon, and metal. All of the | | | | consideration when choosing. |
| materials have different positives and negatives. Plastic | | | | Finally, sunglasses have a variety of coatings. UV |
| can usually be found in less expensive sunglasses. | | | | protective coatings are a must for sunglasses. The |
| Unfortunately, plastic is a lot less durable and cracks | | | | sun's harmful UV rays can seriously damage eyes. |
| more easily than other materials, so it is a good idea to | | | | Some sunglasses may have a dark tint, but do not |
| use plastic reinforced with a metal rod in the arms. | | | | have special coatings that protect against UV rays. |
| Nylon is a excellent choice because it is flexible, light | | | | Other coatings can help improve the scratch |
| and strong. If Nylon is bent, it has the ability to return to | | | | resistance on sunglasses. Additionally, mirror or flash |
| its original position. The final material for the frame is | | | | coated lenses, and anti-reflective coated lenses can |
| metal, which is also an excellent choice because it's | | | | greatly reduce the amount of light absorbed and |
| strong and lightweight. However, metal will bend and | | | | reduce glare or "halo" effects. Once again, the coating |
| break more easily than nylon. | | | | choice should depend on the intended use of the |
| The hinge is the part of the frame that holds the arms | | | | sunglasses. |
| and face of the frame together. The two types of | | | | Sunglasses are essential for people in a variety of |
| hinge materials are metal and nylon. Both types of | | | | situations. Casual sunglasses that are to be used when |
| hinges are solid. Some hinges that are not as well | | | | at the pool or beach do not have to be the most |
| made will make the glasses feel brittle and will have | | | | expensive sunglasses available. For most people, |
| the tendency to not stay snugly on the wearer's face. | | | | sturdy sunglasses that protect the eyes from UV rays |
| For this reason, higher quality hinges should be | | | | and look good are more than enough. However, for |
| purchased. | | | | anyone who is doing a sport that requires maximum |
| The lens is the most important part of sunglasses. | | | | visibility in sunny conditions, high-quality sunglasses are |
| There are several different types of lenses. Lenses | | | | a must. Different lenses and frames can produce |
| can vary in tint, material, and coating. Higher quality | | | | highly variant results. Anyone looking for sunglasses |
| lenses are generally preferred because cheap lenses | | | | should understand in what context the sunglasses will |
| can distort images. A distorted image causes the eyes | | | | be used, and then choose accordingly. An educated |
| to strain. Over a long period of time, this can lead to | | | | decision will usually result in one choosing sunglasses |
| prolonged headaches, nausea, and dizziness. | | | | that he or she is very satisfied with. |
| The types of lens materials are glass, cr-39, | | | | |