Specific questions about the treatment are explained to parents as follows.
What are myopia prevention and treatment keratoplasty lenses?
Corneal shaping lenses are a new type of youth myopia prevention glasses, it is through a physical shaping method, through a reasonable, programmed special design of a rigid corneal shaping lens, night, wear it on the surface of the eye, and then make the cornea in accordance with the reasonable shape we set deformation, through the corneal shape of the change can make the original myopia, astigmatism of adolescents some problems to get a special effective The purpose of wearing the lens at night is to make the myopic cornea become mildly myopic or not myopic, and during the day, the youth will be less myopic or disappear because the shape of the cornea has changed.
Second, what is the principle of keratoplasty?
Generally speaking, soft things will change with hard things, our eye cornea is soft, myopia prevention keratoplasty lens hardness than the cornea hardness is higher, so in the process of wearing the lens, it will gradually through physical methods to make the cornea a shape change, this phenomenon is actually the principle of ophthalmology scientists invented keratoplasty lens, on the cornea to perform orthopedic or known as shaping, is a In fact, the use of highly permeable materials to design and manufacture a special rigid contact lens (generally known as orthopedic lenses or shaping lenses) with a geometric shape that is inverse to the shape of the anterior surface of the human cornea, which is worn on the surface of the eye in different ways to reduce the refractive power by making the central area of the cornea regular and flat, thus effectively correcting myopia and controlling its Rapid development.
Third, it is a rigid material made of corneal contact lens, will it damage my child’s eyes?
No, it will not. Because the latest modern keratoplasty lens is made of high oxygen-permeable material by computer numerical control turning technology, with a special reverse geometry design of contact lenses. Long-term clinical observation and research by many large optometric centers at home and abroad have proven that long-term use of keratoplasty lenses will not cause any special adverse effects on the eyes. Of course, the prerequisite for safety is to go through a scientific and standardized fitting and lens wearing according to the doctor’s requirements, which can completely achieve a safe and effective effect. Moreover, the keratoplasty lenses we are introducing are all brands that have been approved by the U.S. Federal Food and Drug Administration (FDA) for export and the Chinese Drug Administration (SDA) for import, so there is no doubt about their safety. Therefore, rigid keratomileusis is a safe and effective way to prevent myopia in youth.
Who is suitable to wear rigid keratomileusis?
1, myopia continues to progress in children and adolescents, especially parents with high myopia, the child has a genetic predisposition;
2, myopia is below -6, 50D, below -1, 50D of cis-regular corneal astigmatism, and below -0, 75D of retro-regular corneal astigmatism;
3.Children who are able to cooperate (those under ten years old should be able to take care of themselves and must have close cooperation and supervision from their parents);
4, monocular myopia (wearing keratomileusis can reduce binocular aberration and promote binocular monovision);
5, no corneal abnormalities, such as inflammation, degeneration, etc., no other eye diseases;
6, the corneal curvature range of 41,00D ~ 45,50 is good, too large and too small correction difficulties;
7, have a certain economic base, can afford the treatment period lenses and other costs and have good hygiene habits.
8, refractive parallax. It is a large difference between the myopia of the two eyes, wearing frame glasses discomfort.
V. Is everyone suitable for wearing keratomileusis?
For the safety and effectiveness of the prescription, it is strictly required that the wearer does not have any contraindications to wearing contact lenses: the general requirement is that the child is 10 years of age or older, 18 years of age or younger, progressive myopia; myopia within 600 degrees; corneal astigmatism should be less than 150 degrees; corneal curvature between 41,00 degrees and 46,00 degrees; best corrected visual acuity in one eye is 1, 0 or more, and normal intraocular pressure; in addition, high corneal eccentricity as well as appropriate corneal thickness provide the basis for predicting the effect of wearing the lens. “In conclusion, keratoplasty lenses are not suitable for all adolescents.”
In addition, patients with acute conjunctivitis, severe trachoma, and corneal disease are not suitable for fitting.”
At present, the treatment of keratoplasty lenses is mainly for adolescents under 18 years of age, for example, at the age of about 10 years old, until about 18 years old, this age myopia is the fastest growing stage, some children may grow 100 degrees or even 200 degrees per year, such children are not given control, it is easy to develop into high myopia, high myopia on future learning, employment and other adverse effects.
Therefore, early control and early intervention are recommended for adolescent myopia. At present, there are many ways to treat myopia in adolescents, but in general, international ophthalmologists generally agree that keratomileusis is the best. However, the indications should be strict, the fitting of keratoplasty lenses is a non-implantable organ, and the process is a medical practice. Parents and myopic patients must go to a large hospital with good instruments and technology, remember not to go to a non-medical institution for fitting, not to be greedy for cheap, to prevent serious complications. The fitting must be recognized as qualified. The professional skills of corneal shaping lens fitters are very important, and should be fitted by professionally trained ophthalmologists or optometric professionals in hospitals. In addition, the safe use of keratoplasty lenses is largely related to the hygiene habits of the user, without good hygiene habits and conditions, it is not recommended to wear keratoplasty lenses. When adolescents are using them, parents must supervise their children to complete the cleaning and disinfection procedures according to specifications. People with fundus disease, dry eye, and active inflammation are not able to wear them.
Is it safe to wear rigid keratomileusis?
The prerequisite for safe eyewear is that it must be used under the guidance of an ophthalmologist, and there is a scientific procedure for fitting and use in regular hospitals. It is safer for children and adolescents to receive regular review and maintenance from an optometrist. Improper fitting can cause serious complications. It is important to be fully aware of this. “But patients must be clear about the consequences of not being rigorous in their care.” In general, patients have the right to know about the side effects and possible complications of a medical technology, and doctors have an obligation to explain them and give reasonable instructions on how to prevent them. “Also, doctors should tell patients not to wear them during illness and when their immune system is down.” During the period of wearing the lenses, it is important to maintain personal hygiene, always wash and dry your hands before handling the lenses; make sure to put drops full of eye lubricant on the inside of the lenses before wearing them, and after wearing the lenses must pay attention that there should be no air bubbles under the lenses. Parents must supervise or help their children to complete the cleaning and disinfection procedures according to the specifications when the teenagers are using them. At the same time, parents should have a good compliance, in addition to the necessary regular follow-up after wearing, if the child has eye discomfort during the wearing period, should immediately remove the lenses and promptly seek medical attention. Professor Chu Renyuan (Director of the Key Laboratory of Myopia, Ministry of Health) pointed out that keratoplasty is a medical technology that requires qualified physicians, qualified lenses and qualified users to be successful, safe and effective. Both the Chinese Food and Drug Administration (SFDA) and the U.S. FDA have approved the clinical use of keratoplasty lenses, and these approvals were made after rigorous clinical trials. As long as the user follows the instructions of the physician to use correctly must be very safe.
Seven, misconceptions: is it possible to wear keratomileusis at the child stage to cure myopia?
So far, there are many methods to prevent and control myopia, but none of them can cure myopia, and keratoplasty can not completely cure myopia, but if used reasonably and in a timely manner, it can have a significant control and delaying effect on the development of myopia in adolescents with long-term wearing of lenses.
If the child wears the lenses for a period of time, the vision recovers well, and then stops wearing the lenses, the cornea may bounce back, resulting in myopia control failure, and then it is necessary to insist on wearing the lenses to consolidate the effect.
Myopia that has already occurred cannot be eliminated by wearing keratoconus lenses.
For children with increased myopia, the growth rate of myopia may be greater each year with ordinary frames, but the growth rate of myopia with keratomileusis is lower.
The clinical indicators show that keratoplasty has a good effect on myopia delay and control.
What is the procedure of keratoconus care?
First of all, hand hygiene is very important. The hands should be very clean, and the lenses must be cared for with a variety of special care products. There are optometrists who regularly perform eye examinations, lens care and vision tests for children with lenses.
9. How long should I wear rigid keratomileusis at night?
For low to moderate myopia, about 7-9 hours a day at night.
X. Do I need to have regular review of my keratoconus lenses?
Regular review is required. Be sure to follow the doctor’s instructions. Prevention is better than cure. If it is your child’s first time to wear rigid keratomileusis, please follow the prescription doctor’s instructions for regular review at the hospital.
Warm reminder.
If your child feels uncomfortable, do not wear them again and go to the hospital as soon as possible. We are very strict in monitoring children wearing rigid keratomileusis.
What is the life expectancy of rigid keratomileusis lenses?
Some people may not want to throw away the lenses and use them for three years without medical advice, or even longer, but the glasses will age and deform, which will have adverse effects on the eyes and cause unclear vision and double vision.
Twelve, wearing keratomileusis safety four elements are.
1, choose high technology, responsible experts as a prescription and guidance advisers
2, choose to have the official approval of the State Drug Administration is very important plastic lens
3, before wearing strictly grasp the indications, not suitable for wearing the youth, resolutely do not wear
4, choose a formal, senior hospital as the wearing unit.
How to choose keratomileusis?
In response to the many brands of keratoplasty lenses on the market, Xie Peiying, director of the Center for Optometry at Peking University School of Medicine, suggests: first, choose a brand registered and certified by the State Drug Administration; second, imported lenses should have their relevant production certificates, such as the lens box should indicate the specific number of the wearer, test data, the name of the material, the manufacturer’s address, etc.; third, there should be an after-sales guarantee, the fitting of keratoplasty lenses The third is to have an after-sales guarantee that the fitting of keratoplasty lenses is not a one-step process for everyone, and that the lenses should be adjusted and replaced in a timely manner for those with poor fitting. “Therefore it is very important that the keratoplasty lenses used for children must be products registered and approved by the Chinese Food and Drug Administration.”
”The cost of wearing keratoplasty lenses is high, and a pair of lenses should be replaced in about 1 to 1.5 years, so it is important for wearers to have financial considerations.” , “It is important to replace the lenses with new ones from time to time according to the corrective effect of the used lenses, and not to wear one pair of spectacle lenses to the end.”
As early as 2001, the State Ministry of Health clearly pointed out that keratoplasty lenses registered with the State Drug Administration are medical supplies, and that fitting keratoplasty lenses is a medical practice that can only be done in medical institutions by specially trained optometrists.
”Corneal shaping lenses are non-implantable organs and the process is a medical practice. Parents and myopic patients must go to a large hospital with good instruments and technology, remember not to go to non-medical institutions for fitting and not to be greedy for cheap to prevent serious complications.” Xie Peiying stressed again and again.
Fourteen, my child wears a keratoplasty lens is not completely myopia can be cured, the future will not need to wear frame eyes?
A: This cannot be understood. Because to this day, there is no 100% effective method to prevent myopia and control the development of myopia in youth, keratoplasty is a feasible and reversible non-surgical correction method to obtain clear naked eye vision. However, it is not a complete cure for myopia. If used properly, it can have a significant control and retarding effect on myopia development with long-term lens wear. Therefore, the following points need to be clarified.
(1) Myopia that has already occurred cannot be eliminated by wearing keratoconus lenses;
(2) If the child wears the lenses for a period of time, the vision recovers well, and then stops wearing the lenses, the cornea may bounce back, resulting in a failure of myopia control, and then it is necessary to insist on wearing the lenses to consolidate the effect;
(3) For the growth of children’s eye axis due to increased myopia, wearing ordinary frames may increase the myopia degree more each year, then wearing keratoplasty lenses myopia degree growth rate is lower.