|
Many people have little idea about prescription eyeglasses. Well, it is advisable for people who need to wear corrective eyeglasses to have a general idea about them. Let us begin with the myopia. The major reason myopia is caused by the misuse of their eyes and the bad habits of using their eyes. Myopia is usually happened between students and people dealing with paper works. The second major reason is the genetic factor that is why some kids are born myopia. For these people, they need to wear corrective eyeglasses to correct their eye vision into the normal state. When you find you could not see near things clear as usual, the next step you should have an eye exam to make sure whether you got myopia or not. If the answer is yes, the next important thing is to get a pair of prescription eyeglasses. This is also a cure for myopia.
When choosing prescription eyeglasses, one should have a clear understanding about their own condition if they are short-sightedness, whether there is astigmatism or not, whether you have a high degree of myopia or not, etc. Pay attention to the lenses when you are choosing. The lenses chosen for reading and near work should not meet the original need. It should be a little less than that degree. Otherwise the degree of your eyes will increase and further more develop the more severe myopia.
For the high degree myopia, lenses usually would be thicker, the stronger the thicker, so advise you to choose high refractive index lens which will be thinner. You can also select non-spherical lens which can make the center of the lenses less thick. We all know the light eyeglasses will be much comfortable than the heavy ones. If you want reduce your eyeglasses weight, you can choose light lenses materials like plastic, polycarbonate lenses. Such materials generally are much lighter than glass. What is more, they have a better anti-ultraviolet function. Polycarbonate lenses are the perfect choice for kids and people who love sports and athletes for they are difficult to break up. People who have astigmatism need cylindrical lenses, but for mild astigmatism, it can be negligible, with concave spherical correction on it can meet the need.
It is never easy to get a pair of prescription eyeglasses suiting you perfectly. You should take some time and efforts on them. They are based on the customers’ the fully understanding about their own condition.
|
