Many people need to wear glasses. A congenital visual impairment, advancing age or intensive work on the computer are most of the reasons for having to wear glasses. While the visual aid used to be a necessary evil, modern glasses today definitely add striking accents to the wearer’s face.
What is a pair of glasses?
Reading glasses are mostly used to correct presbyopia. However, more and more young people also use reading glasses. Glasses compensate for the visual impairment of their wearer through ground lenses and make it much easier for him to see. The lenses are adjusted to either myopia or hyperopia. The optician will determine the limitations of the future spectacle wearer in an eye test, record the values and order the lenses that will compensate for this visual impairment and make reading or going to the movies a pleasure again. In many cases, the optician even has to determine farsightedness and nearsightedness at the same time. Once the optician has received the ground lenses, he works them into the previously selected spectacle frame and informs his customer that the new glasses are ready for collection and can be fitted.
Shapes, types and styles
Eyeglasses should not only compensate for weakening vision, but also must fit the whole type of the wearer. A variety of frames with metal frames or made of plastic are available, so the decision can be difficult. After all, a pair of glasses is not bought every day, should last as long as possible for a few years or until the vision changes, and on top of that, should also look good. Pure reading glasses do not have to be worn constantly. Here, depending on the wishes of the spectacle wearer, perhaps even a pair of glasses for the so-called zero tariff is enough. The frame is free, only the lenses must be paid. However, if you have to wear glasses all the time in order to see anything at all, you will probably attach more importance to glasses whose higher price is reflected in a special shape and better wearing comfort. Brand or even designer glasses tear already a larger hole into the household cash than the frame at zero cost. Those who additionally can only poorly tolerate sunlight are well served by sunglasses with ground lenses.
Structure, function and mode of action
But it is not the shape or the color of the frame that matters, but rather the ground lenses of a pair of glasses. Someone who “only” suffers from some type of visual impairment will find relief with single vision lenses. In addition, the decision must be made as to whether simple basic lenses are to be used or whether costly enhancements are desired. Antireflection coatings or a slight tinting of the lenses are possible options. People who drive a lot and wear glasses while doing so will definitely achieve a positive effect with anti-reflective and lightly tinted lenses. People who mainly work at a computer also find it a relief if light is not reflected in the lenses. On the other hand, people who only use their glasses for reading do not necessarily need anti-reflective lenses. Varifocal glasses are the perfect compensation for combined visual deficiencies from nearsightedness and farsightedness. The symptoms are completely opposite, so that two pairs of glasses would actually be necessary. Whereas the visual aid used to be a necessary evil, modern glasses today definitely add striking accents to the wearer’s face. Varifocals save one pair of glasses because the lenses are ground in the upper area for far vision and in the lower area for near vision. The transition is smooth and is hardly noticed. Even more sophisticated in the cut is the workplace glasses, which are intended for a flawless view of the computer monitor. In addition to the close-up range, an area is ground in here that is designed precisely for the distance to the monitor. Usually, this is an arm’s length. However, many people do not get along with varifocals, but do not need to do without reading and looking well into the distance with only one pair of glasses. In these models, an area is ground into the lower part that is intended for near vision. A smooth transition of vision does not occur with these glasses.
Medical and health benefits
Glasses to compensate for poor vision are a great relief for the person concerned. In addition to better vision, in many cases the unexplained headaches that come from straining the optic nerve also disappear.Safe participation in road traffic, error-free operation of machines and eye-friendly work on the PC are reasons to think about an eye test and glasses. Glasses that are worn at the first signs of impaired vision make a significant contribution to preserving eyesight into old age. Nevertheless, spectacle wearers should go regularly for an eye test; once the strength of the required lenses has been determined, it does not always have to last. Unfortunately, the visual acuity of the eyes can also deteriorate again as time goes on. Those who love their old glasses and do not want new ones can then simply have the stronger lenses fitted in the old frame.
