Brillengläser

Brillengläser, commonly translated as eyeglass lenses, are optical lenses designed to be fitted into spectacles to correct vision problems. They are crafted from materials such as glass or various types of plastic, with plastic being more prevalent due to its lighter weight and increased safety. The primary function of eyeglass lenses is to refract light, altering its path so that it focuses precisely on the retina at the back of the eye. This correction is crucial for individuals experiencing refractive errors like myopia (nearsightedness), hyperopia (farsightedness), astigmatism, and presbyopia (age-related farsightedness).

Different types of eyeglass lenses exist to address specific visual needs. Single-vision lenses provide correction for one focal distance, either for near or far vision. Bifocal lenses offer two distinct focal points, typically for distance and reading, with a visible line separating the two zones. Progressive lenses, often referred to as multifocal or no-line bifocals, provide a seamless transition between multiple focal distances without any visible lines, allowing for clear vision at all ranges. Lens coatings are also common additions to enhance performance and durability. Anti-reflective coatings reduce glare and improve visual clarity, while scratch-resistant coatings protect the lens surface from damage. UV protection coatings block harmful ultraviolet rays, safeguarding the eyes. The prescription for eyeglass lenses is determined by an optometrist or ophthalmologist after a comprehensive eye examination.