If your eyeglass prescription hasn't changed for years, then you may still be wearing the same glasses you were prescribed years ago without realizing that your vision could be much clearer. Due to technological advances in optometry, you can now sharpen even 20/20 vision with HD eyeglasses. Read on to learn how HD glasses differ from traditional ones and how they can help you see more clearly, even if you have 20/20 vision with your current eyeglasses.
The Difference Between Typical Eyeglass Lenses and HD Ones
Traditional eyeglass lenses are produced to correct the most common and severe vision problems. These problems include nearsightedness, farsightedness, and astigmatism. When corrected, your vision, of course, is much more clear. However, just like other organs of the human body, your eyes are very unique, and you may have other small vision problems that are not being corrected with your traditional eyeglass lenses. These other small vision problems are called higher-order aberrations.
What HD eyeglass lenses do that traditional ones don't is correct these other small vision problems that you may not realize you even have because you have just grown so used to them. Or you may have noticed them in the form of halos, bad night vision, etc. Correcting higher-order abberations was not possible in the past, because there was really no way to measure the eye to detect these problems, but detecting and correcting them is now possible due to modern technology and HD eyeglasses.
How HD Eyeglass Lenses are Prescribed
The first step to getting HD lenses is to find an optometrist who has the equipment needed to detect and diagnose the higher-order aberrations you have. Now that the technology has been around for a few years, it should not be difficult. Then, when you visit the optometrist, they will perform a special eye exam using a machine called an aberrometor. This machine projects small beams of light at your eyes, and then records how your eyes respond to the beams. When your eye lens distorts a specific light beam, that means that you have a higher-order abberation that can be corrected with the right lenses.
Your optometrist will record how your eyes react to all of the beams of light projected into them and produce special maps of your eyes. These maps will then make up part of your custom eyeglass prescription. Your prescription can then be sent to an eyeglass manufacturer that has the equipment to make these custom, HD lenses that correct all vision problems you have and not just nearsightedness or farsightedness.
If you have been hanging onto your old eyeglasses for years, because your eyeglass prescription has remained steady, then realize that there is a reason to update your eyeglass lens prescription if you want to see even more clearly. Just like you may have felt your television picture was super-clear until you switched to HD and realized how much better those movies could really look, you may not notice how those small vision problems in the form of higher-order aberrations are distorting your vision until you have them corrected.