Choosing the Right Lens for Your Prescription Glasses

When your eyes start to lose their focus, it is time to visit an eye doctor, who will examine your eyesight and then give you a prescription to help correct your vision. Mostly, the eye doctor will recommend a particular lens to fit the prescription. This is what the optician and his technicians will use to fit your glasses with the right lenses.
If you want to learn about choosing the right lens for your prescription glasses then be sure to look online for the lenses. The plain truth is that online sellers have a wide selection of lenses to choose from and their prices also beat those of the high street seller as well as those of regular opticians. Some people find it hard and confusing to choose the right lenses because they do not understand what their prescription means. Furthermore, not every eye doctor mentions the exact lens that the patient needs to buy. And, if the eye doctor does mention a particular lens then the patient may still not know why they should use those particular lenses and not something else.

To make the task of choosing the right lens for your prescription glasses easier, you should first of all look at your prescription and understand what it means. If the doctor mentions zero then that means that there is nothing wrong with your eyes. However, if he or she mentions either a positive or negative number then it means that your vision needs to be corrected. Also, if the prescription number is high then that means that your eyes are weak. The best lenses for a high prescription number are those that are very thin.

There are certain benefits to choosing thin lenses. For one, they are not bulky and secondly they do not produce what is termed as ghost images. Thick lenses suffer from this problem and being bulky they also do not look nice. A positive prescription number in your lenses’ sphere implies that the lens will have more thickness in the center. On the other hand, a negative number in the sphere of your lens means that the thickness of the lens will be greater on the sides than in the middle. Before you choose your lenses, you must understand the importance of understanding your prescription numbers.

High index lenses are those that are very thin and CR39 is the most common type of high index lens. CR39 lenses are perfect for those whose prescription numbers are not high. On the other hand, your prescription numbers may indicate that your eyes are very weak. In this case, you will probably be advised to buy lenses that are not only quite thick but they will also have a lot of bulk. If you do not want to wear lenses that are very thick then you should opt for a high index lens with a number of 1.61, as this kind of lens is about thirty to fifty percent less thick. If your prescription numbers are very high then your eyes are really very weak. The high index lenses that will work best for you, in this case, are the one with a reading of 1.67. These lenses are not only very thin but they will also do much to correct your vision. If you really want to wear lenses that are extremely thin then choose the high index lens with a reading of 1.74. There are no lenses that are thinner than these lenses and they are also extremely light.

Once you have understood the meaning of your prescription, choosing the right lens for your prescription glasses becomes that much easier.