During the winter vacation, the child no longer goes to class, can you also give your eyes a vacation, and you don't need to wear orthokeratology lenses every night? Many parents have raised such questions. On February 3, Kunming Aier Eye Hospital held a special science popularization activity of "Mirrorless Childhood, Eye Shaping the Future" - 5P myopia management and orthokeratology lenses to help children and adolescents correctly use orthokeratology lenses to control the development of myopia.
During the event, Yuan Xianghua, director of the Department of Optometry of Kunming Aier Eye Hospital, first introduced the principle of orthokeratology lenses. She said that the reason why orthokeratology lenses can delay the growth of myopia is that it needs to be worn at night, with the help of physical compression and tear hydraulics, temporarily change the curvature of the cornea, so that the retinal imaging can focus on the omentum, so as to meet the requirements of clear naked eye vision during the day. However, due to the elasticity of the cornea, once the lenses are stopped, the original refractive error will gradually return. This means that during the day, you need to use other corrective measures, such as glasses, to see clearly.
Most importantly, studies have found that long-term insistence on wearing orthokeratology lenses can play a certain role in myopia control. During the winter vacation, although children do not have to face heavy homework pressure, they use mobile phones, ipads and other terminals more frequently. It can be said that the burden of children's close eyes during the holiday period has not been reduced because of the holiday, but may be more serious.
It is reported that in order to ensure the wearing effect of orthokeratology lenses, orthokeratology lenses need to be worn every day, except for colds, fevers, and eye redness, do not stop wearing them at will. In addition, orthokeratology lenses do not prolong the life and time of use because of the decrease in the number of uses. Therefore, after the prescription of orthokeratology lenses, parents still need to regularly urge their children to comply with the doctor's instructions, wear them every night, and have regular check-ups. If you have other conditions and do not know whether you need to stop wearing glasses, you can consult your doctor and consider suspending wearing glasses as appropriate.
Usually busy with school, finally during the holidays, friends of all ages want to sleep more, but friends who wear orthokeratology lenses should wear them for too long when sleeping. Yuan Xianghua said that sufficient time to wear glasses at night is the premise of maintaining good eyesight during the day. Due to the elasticity of the cornea, it is shaped by orthokeratology lenses during sleep at night, and after removing the lens during the day, the cornea will gradually return to its original shape over time, and at night, the patient's vision will be slightly worse than in the morning. Then, if you don't wear glasses for enough time, it will lead to insufficient shaping and it will be difficult to maintain good vision during the day, especially for patients with high prescriptions. Therefore, it is recommended to wear glasses for at least 7 hours per night.
Yuan Xianghua reminded that because the normal metabolism of our cornea is inseparable from oxygen, sleeping with lenses for too long will reduce the mobility of lenses and the circulation of tears, thereby increasing the difficulty of taking lenses. Therefore, it is recommended that you do not wear your glasses for more than 9 hours per night.
Orthokeratology lenses are an important means to control the safety of myopia in clinical practice, and standardized fitting in professional medical institutions is the basis for ensuring the safety of wearing lenses. Yuan Xianghua said that orthokeratology lenses belong to the third class of medical device products, and the indications and fitting are rigorous medical behaviors, and the safety and compliance fitting and use are very important. Therefore, myopia patients must go to a regular eye hospital for a complete medical optometry examination and be fitted under the guidance of a professional ophthalmologist.
Pocket Spring City Reporter: Miao Peiqian Editor: Yang Rui Editor: Wu Chenping Final Review: Zhou Jianjun.