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The Purpose Of Glasses And Contact Lenses

By Expert Author: john kelly

Have you ever wondered why it is necessary for some people to wear contact lenses and glasses while others do not? Depending on factor such as their family history and environmental causes, the way that people’s eyes work and appear can vary from one individual to another. This pertains to eye colour, visual accuracy, and eye mechanism. Unfortunately, in some cases, the eyes of some people do not work as they should. This is where contact lenses or eyeglasses come into play. These visual tools help people achieve clarity with regard to their eyesight.

How Eyes Work

Before anything else, it’s important to understand how the eyes work and why they sometimes do not function or perform as they should. The eyeball is comprised of the cornea, clear tissue, the iris, the pupil, the lens, and the retina. Clear tissue and the retina are responsible for helping the eye focus while the pupil allows light into the eyes.

When all parts of the eye are working as they should, a person will not experience any vision-related problems. This means that your eye is capturing each image that it sees, sending the picture back to your brain, and it is interpreted as it should be. On the other hand, if your retina does not work as sharply as it should, the image appears fuzzy to your brain. This is where the refractive problem comes in. Thankfully, glasses and contact lenses help to bend the light rays correctly so that your vision problem is correct.

When it comes to common refractive problems, a person can be either nearsighted or farsighted. If you are nearsighted, this means that you experience trouble seeing people or objects that are at a distance from you. Conversely, being farsighted means that you have no problem seeing people or objects that are far away, but you experience difficulty seeing things up close.

Eye Exams

If you have ever experienced any problems related to your vision, a qualified optician, ophthalmologist or optometrist can conduct an eye exam in order to determine or pinpoint what the exact problem is. They will then determine if it is necessary for you to wear eyeglasses or contact lenses. You might ask: what is the difference among an optician, ophthalmologist, and an optometrist? That’s a great question.

•An optician’s job involves making or selling glasses and glasses based on what is prescribed by the ophthalmologist or optometrist.

•On the other hand, an ophthalmologist is a physician that has been trained in treating eye related problems that require the use of eyeglasses and contact lenses. In some cases, they are also authorized to perform eye surgery on patients whose vision problems necessitate it.

•Lastly, an optometrist is a licensed professional whose speciality lies in eye exams. They also do the job of giving out the correct prescriptions for people who need eyeglasses and contact lenses.

What happens at an eye exam? Typically, the eye exam that you will be taking will involve reading letters, numbers or both on an eye chart. The letters or numbers that are found on the chart will make use of letters of different sizes. It is also possible that the optometrist will ask you to examine text at a close distance, as if you are reading from a book. The objective of these tests is to gauge your visual accuracy from both a close and a far distance.

Based on the results of your eye exam, if the doctor determines that it is necessary for you to wear eyeglasses or contact lenses, you will be fitted with a special mechanical device wherein you will try a variety of different prescriptions as you and the doctor work together to determine what the best and most accurate prescription for you is. This prescription will be what helps you to see most clearly without struggling, straining or squinting. The mechanical device is similar to a large pair of eyeglasses; just thicker and heavier in size and weight.

It is important to be completely honest and to take your time as the doctor carries out this procedure in order that you get the best vision possible with your contact lenses or eyeglasses!

Outstanding results are right in front of you if you're serious about improving your eyesight and getting rid of your glasses. Check out the Vision Without Glasses Review and discover how you can experience perfect vision - http://www.youtube.com/watch?v=esn5RIrF940

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