Our eyes without any doubt are wonderful creations of nature. They are usually created by nature to last a lifetime. However, most people as they age they start losing their ability to perform their duties normally. It starts with small things like a headache while reading books, watching movies or working on the computer. These are first signs that all may not be well with our eyes, and it is a time that you thought about correcting the problem and choosing your eye vision keeping in mind certain damages which might have taken place.
The most common and obvious choice without any doubt is going in for vision correcting lenses and glasses. However, choosing the right lenses is not a child’s play and the job is best handled by a qualified and experienced ophthalmologist. However, once the right lens power has been chosen the onus lies on the customer to choose the right lens keeping in mind certain facts. We will learn more about them over the next few lines.
Quality Of Lenses
Once the ophthalmologist has identified the lens power, the next step is to choose the lens of the right quality. Eye-lens are made from glass, plastic or fiberglass. Each one has its unique features, advantages, and shortcomings. Glass, for example, can be crystal clear and perhaps more resistant to scratch when compared to plastic. However, the problem with a glass lens is that it is prone to breakage and once the lens crack at the wrong place it would be virtually impossible to use them.
Compared to glass, today many customers opt for plastic lenses which are long lasting, and they are free from the hazards and risk of breakages. However, they could be more prone to scratches and nicks and therefore should be maintained properly. Therefore, those who are careless with their spectacles might not find these plastic and fiberglass lenses very useful.
A Few more Things Must Be Taken Into Account
When going in for eye lenses for correcting your vision, a few more things must be taken into account. One must pay attention to the refractive index. This is a number which is assigned to the lens to measure the efficiency with which it can refract or bend light. In other words, it is a number which helps find out the speed at which light travel through the material.
Different types of plastic have a different refractive index and you must choose the right one after factoring your lens power and the specific condition of your eyes. Your eye specialist and ophthalmologist would be the right person who could help you in this matter.
There is another technical term known as abbe value which also must be taken note of when choosing your eye vision. This again is a value which measures how efficiently and how widely the lens can disperse wavelengths of light, which could be different. Lens having low Abbe Value usually have higher dispersion and vice-versa. Hence, all these factors must be taken into account when going in for choosing the right eye lenses.