Fundamental Concepts of Lens Refraction
The entire rationale behind the use of eyeglasses and contact lenses is easily understood if one considers that the eye exists for the sole purpose of focusing light waves on the retina. This is not to say that the complex details behind how the eye accomplishes this task are simple. In fact, many people have found that the physics underlying the physiology of the eye can become quite complex. Opticians should at least have a basic understanding of lenses in order to provide high levels of service.
Index of Refraction
This concept simply refers to how light waves are affected as they pass through different mediums such as air and water. Lenses use the physics of refraction to focus light waves, from the environment, on the retina so that the brain can form the images that humans perceive. The purpose behind contact lenses and eyeglasses is to use the physics of refraction to alter the … Click Here to Continue Reading
