There are two causes for the increasing degrees of shortsightedness: generally speaking, in one or two years, vision of children will gain fifty to seventy-five degrees; it is also common for adults gaining the same degrees in two or three years. Two reasons deepen myopia degree. One is pathological myopia. It is because something wrong inside eye, which is genetic. Its symptom is the degree of myopia keeps deep and worsens very quickly. If myopia increases by more than 100 degrees within one year, or even up to 200 degrees or higher, or the total has reached 2000 degrees of high myopia, it is likely to be pathological myopia.

There is no good treatment for pathological myopia nowadays. If there exists posterior scleral staphyloma, posterior scleral reinforcement surgery is the most often used treatment currently. In this operation, the posterior scleritis are covered by a fascia lata. On the one hand, this method strengthens the holding force of the posterior scleritis and prevents the continuous seriousness of posterior scleral staphyloma.

On the other hand, Shortened the anteroposterior diameter of the eyeball. To a certain extent, it can decrease the degree of nearsighted.Neglecting the eye hygiene and incorrect habits of using eyes are the other reasons. For example, the light is too bright or too dark, eyes are too tired after long time work, or do not go to see a doctor at once when getting trichiasis, ptosis, keratitissome and other eye diseases.

There are special points that should be paid particular attention to in buying eyeglasses online. Once the current eyewear can not meet vision requirements, you should go and do a eye check in a regular hospital promptly, redressing the degree of myopia and replacing a appropriate glasses, and do regular follow-up examination. It is better for the children under age 12 to do a optometry once for six months or a year. And also mydriasis optometry should be applied, so that the ciliary muscle within eyes can fully relax. The removal of inaccuracy of an opthalmic test caused by pseudomyopia as well as the timely wearing of suitable cheap eyeglasses to remedy pseudomyopia should also be emphasized. Generally speaking, adults under forty years old

Should take the dilated pupils optometry if it is the first time to check eyes. In addition, a particular check for the eye ground is necessary to avoid illness and lens abnormality. Take care the eye-sanitation: for my part, it is important to save the time to use our eyes. Because during the growth period of eyes. The time for short seeing is limited. If the time of using eyes to see near things goes longer than the limit, it may cause myopia.

Some people liken vision as the flashlight battery, with several short-term use, there is a longer service life; A long-time use will shorten its service life because of acute consumption. So give the eyes a reasonable rest time.

Following tips should try to complete: 1. You'd better look at the nearby things within 6 hours totally. 2. Listening instead of watching to reduce your eyes' burden. 3. It is better to put the desk in a place where no objects are blocking the window. 4. If you are using a incandescent lamp, 25 to 40 watts would be much better and the light should not reach the eyes directly 5. Maintain a sufficient distance from the