As the changes of the times, in daily life, no matter major person is the job or study, can introduce product of a few electrons, and the use metropolis with these electronic long products brings about eye myopia. As a result of the occurrence of myopia, who knows myopic laser surgery to also be born, small today making up those who take everybody to understand is why force of myopic operation backsight answers somebody retreat, does myopic operation have the expiration period?
Myopic laser surgery is born at 20 centuries end, since applying at clinical cure myopia 1985, to make the mankind has clear and perfect visual sense ceaseless innovation progresses, nowadays has not been had into small cut of in a subtle way start a period, eyesight restores rapid, visual quality is fine, begin with rising 2011 among them " SMILE " surgery of laser of complete flying second is a delegate, its are behaved is outstanding more.
However, a lot of people still can have doubt, such problem often is encountered in clinical work -- " hear face-lifting operation has the expiration period, you a few years can this laser surgery protect? " " crossed 20 annual meeting to won't want to take the looking glass that wear a look again? " " the eyesight after my friend became an operation 5 years is bad, why ah? " ... so, does myopic laser surgery have after all " the expiration period " ? Let us know this kind of operation first from the principle.
No matter why be planted art of forehand of laser myopia correct, its principle is to pass essence of life to allow cutting cornea area of central ministry optics, weigh curvature of model cornea surface, make corneal from steep flatten, change diopter of full key point thereby. Below the premise that assures safety, how does long-dated and correctional effect depend on a few crucial factors: Degree of myopia of; of myopic degree, corneal ply, corneal curvature is higher, change of more, corneal curvature jumps over the corneal ply of cutting much.
The unripe material resources that organizes as a result of cornea learns character and traumatic rehabilitate reaction, after laser method short time (6 months) inside the reaction that can produce certain level, but can try to control with medicaments, won't cause an effect to eyesight commonly. And long-term effect is a degree, as corneal as the myopia before the operation ply, corneal closely related curvature, this is whether the; that after be being evaluated through strict examination before art, can be forecasted is added newly again with myopia second about, closely related this and element of the habit that use an eye and myopic heredity. Analysis of our repass citing comes to deepness be known below.
25 years old of 300 degrees stable and nearsighted patients, corneal ply 520 micron, corneal curvature 43D. This corneal ply and curvature are the average of normal crowd, integral condition suits myopic operation very much, can say to did not rebound almost if a risk; that retreat notices to use a convention after art, protect double eye, that will have clear visual sense for long.
Another 25 years old of 800 degrees nearsighted patients, in recent years every year still thimbleful myopia increases. Corneal ply 550 micron, corneal curvature 44D. Although degree is as high as 800 degrees, but corneal ply is enough, corneal curvature is appropriate, combine the patient's medical history, after can forecasting patient art, still appear to add myopia newly likely, the doctor that has experience will be additional again add and correctional 50 ～ 75 degrees, the attention after art cannot use an eye for long, nurturance is good habit, so, also can have clear visual sense for long.
Still have 18 years old 600 degrees of nearsighted patients, increase 50 degrees every year in recent years, the mother has high myopia, because join the army,demand wants to become an operation correctional. Corneal ply 540 micron, corneal curvature 40D. Although myopic degree is moderate, corneal ply is enough, but corneal curvature is smoother, corneal curvature will become evener after art, because corneal biology is mechanical characteristic, forecast the spring back that can have fixed rate, control in 100 degrees about, doctor operation designs can proper add and correctional degree. However, ability is 18 his age years old, myopia is not stable still, accordingly, art hind increases myopic chance newly rate is high, must notice to use an eye, but from will for a long time look, appear extremely likely still the myopia of small degree. These circumstances, the doctor before art can be forecasted and tell its short-term and long-term effect. He passes check-up smoothly after the operation, realized the dream when the soldier, but the ego that long-term effect wants to rely on him is safeguarded.
Of course, we still have nowadays more myopic and correctional operations can choose, correctional to laser surgery is being forecasted after the examination before a few art effect not beautiful, long-dated eyesight is easy after art a patient that retreat, the doctor still can recommend other operation way, ICL crystal is for instance embedded operation, but the assessment with certain more strict and detailed need, choose reliable hospital and authentic doctor.
See here, should everybody understand myopic laser surgery " the expiration period " ? If must ask a doctor, our answer is a hope " the expiration period " be " permanent " . But this " permanent " the joint efforts that needs doctor and patient. According to the country domestic Ministry of Education, defend newest investigation of committee of planning to make clear: Rate of myopia of our country pupil exceeds 25% , crude myopic rate reachs junior high 70% , crude myopic rate reachs high school 85% , house world the first. Be engaged in exceeding close quarters for a long time reading the job, eye burden is overweight it is the mainest reason. After myopic laser method same also, implementation " permanent expiration period " need to love an eye to shield an eye more.
