It provides an opportunity within a glasses both a long and a short-sightedness to compensate, which plays an important role especially in the presbyopia. So must be constantly alternated between different eyewear models. How big are the respective glasses of the glasses, depends on the chosen version. The version provides support of the glasses. As a general rule: the smaller the lenses lower their weight. Materials for the production of eyeglasses frames are silver, stainless steel, titanium, plastics, or cellulose acetate. Learn more at this site: Ray Clemence.
The shape and size of the frame of the glasses should be selected to face size, eye distance and size of the orbit. The eyebrows should not be covered by a normal pair of glasses. Stop the head Gets the glasses on the one about the temples and on the other hand nose bridges. The spectacle frames must be so long that it comfortably enough behind the ears. To avoid pressure points, the glasses may not to snug against the face selection of species eyewear: sunglasses sunglasses is probably the most widely used glasses, even for those who have a visual impairment.
The tint of the glass reduces the incidence of light and protect the eyes from UV rays. The tint of the glass can be varying degrees. In high mountains or skiing, where the sunlight is very strong, special light protection sunglasses are needed. Children’s glasses need some children already glasses, to early treatment of Ametropia. The glasses for infants or toddlers have a plastic mount, also the brackets are included in the. So, the glasses are particularly resistant. Sports glasses are made the glasses for sports shatter-proof glass and a very flexible and light frame. Sit very close to the head, without however pressing. Also eyewear or goggles are to move under the sports glasses. Diving goggles or mask if you will, is also a sport diving. However, a mask is made differently and must meet other criteria as sport glasses. The Main part of a diving mask is made of rubber or silicone. A slice is used in the field of vision. Sealing lips prevent ingress of water between face and glasses. 3D glasses 3D movies are becoming more popular, because the experience of what is happening on the screen is much more intense. 3D glasses is required however to make visible the dimensionality on the flat surface to the human eye. Goggles in some occupations special goggles are needed to protect the eye from flying sparks, chemicals, radiation or ver Blitzungen. Also in the military, glasses are used in various areas as eye protection.