Winter vacation is coming, many parents and children's myopia correction on the agenda, these two days, the number of ophthalmic clinics in many hospitals in our city increased significantly to but kids eyeglasses near me. Many parents heard that the contact lens can effectively reduce the degree of myopia, have to the hospital to consult whether it can be selected for their children. So, what is myopia control corneal contact lens, what types are there, and what conditions need to be met? In response to these problems, the reporter interviewed our city eye doctor.
Recently, outpatient "small glasses" increased
"These two days, many schools have finished the final exam, parents take advantage of the children's rest, one after another with their children to the hospital to check and correct vision, these two days on the clinic of small children increased significantly." According to Liang Min, a doctor in the optometry department of Suzhou Optometry Hospital, over the past semester, many parents have found that their children's myopia has deepened a lot, and they are very worried, and many parents have asked whether they can prevent and control it through contact lenses.
Liang Min introduced that myopia has become an important cause of endangering the visual health of children and adolescents, and it is of great significance to control the occurrence and development of myopia as early as possible to reduce the visual damage of children and adolescents in the future. At present, the refractive means used for the prevention and control of myopia in children and adolescents include myopia prevention and control frame glasses and myopia prevention and control contact lenses. When it comes to myopia control contact lenses, the most familiar one is the orthokeratology lens, which is what parents often say is OK mirror. In the process of diagnosis and treatment, doctors found that many parents' understanding of OK mirror is that it can delay the development of myopia, but they have relatively little understanding of multi-focal soft mirror and defocus RGP.
So, what exactly is an OK mirror? Liang Min introduced that the OK mirror can temporarily reduce the degree of myopia of the rigid contact lenses, because of its special material, oxygen permeability is relatively high, so suitable for night wear. At the same time, after the child wears a mirror, a circular peripheral defocus area will be formed on the cornea to delay the growth of the eye axis. At present, the OK mirror selected by most primary and secondary school students and parents has been relatively mature and can be used as a method for myopia control in children and adolescents.
What are the advantages of the OK mirror? Liang Min said that it can carry out myopia control, and temporarily reduce the degree of myopia of children, so that they can have a better naked eye vision during the day, so that they do not need to wear frame glasses during the day, reducing the burden of children's learning, sports and life during the day.
But it is worth noting that wearing the OK mirror is also conditional, usually, the doctor will recommend that the age is recommended over 8 years old, no other eye diseases and other children use. In addition to the corneal shape of the patient also has certain requirements, OK mirror is a hard contact lens, children need a period of time to adapt, therefore, not everyone can wear.
OK lens does not correct astigmatism may occur dry eye
In addition to the OK mirror, in the clinic, some parents are also very interested in multi-focal soft mirrors. Liang Min introduced that the multi-focal soft mirror is a kind of daily disposable contact lenses worn during the day. The design of the multi-focal soft mirror is also based on the optical defocus theory. The light passes through the treatment area and gathers in front of the retina to form peripheral myopic defocus, so as to delay the growth of the eye axis.
What are the advantages of multi-focal soft mirrors? Liang Min said that the adaptation symptoms of multi-focal soft mirror is relatively wide, it is not so strict on the age requirements, some special corneal shape or for other reasons can not wear OK mirror children, you can also choose multi-focal soft mirror, and even some children with mild eyelid trichiasis, wear multi-focal soft mirror during the day, you can reduce the irritation of the eyelashes on the cornea, reduce the discomfort of the eyes.
Multifocal soft lenses have been used for myopia control in foreign countries for several years. Due to its good comfort and safety, the multi-focal soft mirror has become one of the effective means of myopia control recognized by experts in related fields at home and abroad, and provides a new diagnosis and treatment method for myopia control of adolescents.
However, parents should also pay attention to the fact that multi-focal soft mirrors can not correct astigmatism at present, and if children with higher astigmatism degrees wear multi-focal soft mirrors, their eyesight may be lower than that of frame glasses with foot correction. In addition, doctors recommend to increase the time of wearing multi-focal soft mirrors during the day as much as possible to get better control. However, due to the oxygen penetration rate of soft mirror materials is lower than that of hard mirror, some children will have dry eyes and other uncomfortable symptoms when wearing for a long time.
Blinking produces certain visual changes
In the field of contact lenses, there is another type of glasses that has also received attention, that is, the rigid oxygen permeable contact lens RGP. This is a rigid contact lens with high oxygen permeability that can be worn during the day. Due to its relatively small diameter, patients can obtain better tear exchange and relieve discomfort symptoms such as dry eyes caused by the contact lens.
The rigid contact lens is suitable for most primary and secondary school students with relatively high myopia, and can correct myopia of 0 to 2000 degrees, and can also accommodate those patients who cannot get an OK lens because of the limited shape of the cornea. The principle is also to mimic the orthokeratology lens induced peripheral myopic defocus, in order to delay the growth of the eye axis.
Like the OK lens, this contact lens is also a hard contact lens and takes some time to get used to. In addition, due to the small diameter of the lens, there will be certain visual changes in the process of blinking when wearing glasses, and it will take some time to adapt.
