Eyeglass Lens

If you're not an expert in the field of optometry, it can be very difficult to understand the inputs and outputs of this type of glasses are available. As such, you should definitely count on your optometrist and staff guidance. That said, be an informed consumer always makes sense. Therefore, we adopted an approach outspoken in explaining the main types of lenses and what they are used to treat.

Single Vision

The first type of goal that we will discuss the unique vision. They are used to correct myopia and hyperiopia. Simply refer to these farsighted (hyperiopia) and myopia (nearsightedness). Each of these diagnoses is exactly the way their name describes. In other words, a person can see far-sighted, but not nearly as well and vice versa, for a myopic person. Glasses with both types of lenses were made to correct a single field of vision, which means that it is consistent throughout.

Bi Focal

Unfortunately, some people have difficulty seeing near and far. Fortunately, there is a solution. Bi-Focal are essentially two orders in one. The glasses are distributed so that the upper part is used to see farther so that the bottom is for tasks like reading. The bottom allows those with a diagnosis of presbyopia, which means that the patient has difficulty focusing on things that are nearby.

Tri-Focal

Of course, like most things in life, the vision is not cut and dry. After all, exactly how far is the distance vision and near vision is close. Fortunately, experts realized that there is an in-between area that many have problems with and have developed tri-focal to meet this need. These types of lenses simply added a zone to the middle view just above the viewing area close to a bi-focal. The result is increased vision at distances in the range of 18-24 inches. These are excellent options for those who have to view computer screens or vehicle speedometers all day.

Progressive

To the excitement of wearing glasses, there is another very popular type of lens. The progressive lens works as tri-focal, but the lines that divide the near, intermediate, and far vision zones are smoothed. This leads to a smoother transition from one region to another for the wearer's eyes. This type of lens is also a favorite because the hidden lines means it is difficult to say that you wear three lengths. In short, they look like single vision glasses.

In conclusion, the understanding of prescription glasses lens and the conditions they treat the concepts can be quite simple. Once the medical jargon is removed, it is a simple question corresponding to a type of lens with the constraints that you encounter vision. Hopefully this guide can help you be better informed next time you talk with your doctor.