What is the Meaning & Definition of lenses

Lenses are one of the most necessary and useful inventions that human beings developed allowing them enjoy a better visual quality as well as also today contributing an interesting aesthetic sense to the appearance. When we talk about lenses we enter the world of physics and optics since, despite seem simple objects, eyeglasses pose some level of complexity in regards to its operation. The most primitive forms of eyeglasses that are known today were small pieces of glass in terms of size according to the specific needs of those who use them. These pieces of glass were not attached to any specific structure such as frameworks today and also tended not to be used permanently if not separated from the body (i.e. not placed upon him) occasionally. Most modern lenses began to count on support or support structures that facilitated much use. Lenses can be described as normally made of glass elements (although currently we can also find lenses made of acrylic or plastic transparent) that reflect light because of its arched form and allowing that person might have better vision about what focus. Lenses can be adapted physically to different needs and therefore there are lenses to watch from afar and lenses to see up close, lenses for reading or resting, etc. Eyeglasses or sunglasses are those that possess a more polarized or dark glass that facilitates vision in situations in which the presence of sunlight or artificial light is very abundant. These lenses are perhaps that most have been developed in stylistic terms, and today there are numerous brands that are dedicated exclusively to the design of innovative and amazing frames for sunglasses.