From a professional point of view, orthokeratology lenses use breathable hard contact lens materials, commonly known as RGP materials, that is, "breathable hard materials", which are developed on the basis of impermeable hard materials PMMA. OK lenses on the market are actually orthokeratology lenses.
So, what effect does the well-known orthokeratology have on myopia patients? Can patients wear orthokeratology lens to effectively prevent and control the aggravation of myopia? Today, let's solve these problems together.
How to wear orthokeratology glasses;
1. Wash your hands before wearing contact lenses.
2. Operate and wear the lens on a clean and flat desktop to prevent the lens from falling to the ground.
3. Confirm whether the lens is abnormal before wearing. If there are stains and deposits, be sure to wash them before wearing them.
4. Before wearing glasses, please identify the front and back of glasses. Identification method: put the glasses on your fingertips, and the circle with a bowl-shaped edge on the right is the front, which can be worn; If the edge is tilted outward or reversed, it will have a serious foreign body feeling when worn backwards.
5. Take out the lens and put it in the palm of your hand. Sprinkle fresh care solution on the lens and gently soften it by hand.
6. Hold the glasses with the index finger of the right hand. Then make sure the glasses face up before you start wearing them.
7. Gently open the upper eyelid with the left middle finger, and then gently open the lower eyelid with the right middle finger. At this time, the eyeball is very exposed. At this time, gently stick the lens in the middle of the eye. When the lens touches your eyes, just look down and let go of your hand, so that the lens can be properly positioned.
8. When wearing, after opening the eyelids, the eyes will stare straight at the middle of the glasses, and then the fingers will slowly approach the eyes. After putting them in, blink a few times to correct your position. Don't worry, the more anxious you are, the easier it is to blink. You can also use rubber tweezers. It is more hygienic to wear and pick your fingers without touching glasses.
Advantages of orthokeratology:
1, vision can be improved in a short time.
2, myopia diopter reduction effect is good, no need to wear glasses or contact lenses.
3. Simple operation and convenient use.
4. There is no risk, and other eye functions are not affected.
5. It can inhibit the development of juvenile progressive myopia.
6, can meet the requirements of some special occupations (such as athletes, divers, pilots, actors, students, soldiers, etc.). ) For hyperopia.
The harm of orthokeratology;
1, corneal hypoxia
Corneal hypoxia usually occurs when wearing orthokeratology lenses, which is mainly related to the materials used in orthokeratology lenses. When normal people sleep, the cornea is in a state of physiological hypoxia, and corneal hypoxia is first of all corneal endothelial cells. After wearing plastic glasses, it is easy to aggravate the hypoxia state, leading to corneal endothelial cell dysfunction, corneal edema, corneal bullae and so on.
2. Corneal infection
Wearing orthokeratology glasses without strict examination or improper daily care will lead to serious complications such as corneal infection and corneal ulcer.
Therefore, when choosing the brand of orthokeratology lens, we must polish our eyes and compare them carefully. At the same time, we must do a good job in daily care.
What brands of orthokeratology lenses are there?
Orthokeratology lens is divided into domestic and imported. Common brands are: Denton Doctor, Fiscom, Minocom, Euclid, Hengtai, Alpha and so on. You can choose according to your myopia and acceptable price.
Of course, before choosing orthokeratology lenses, myopia patients should go to professional hospitals and eye hospitals to do some corresponding examinations, such as (Kang Ming Ophthalmology, Taiyuan), to see what their own conditions are, and then choose the brand that suits them according to the actual situation.
In fact, in the final analysis, the fundamental reason for wearing orthokeratology glasses is the development of myopia. Children don't have a healthy and good eye care habit since childhood, and parents don't have this awareness, which leads to a sharp decline in children's vision.
According to the survey data, the main reason for the occurrence and development of juvenile myopia in China is environmental factors, and the formation of myopia is a cumulative process from quantitative change to qualitative change. At the beginning, I often waited until my children couldn't read the words on the blackboard clearly in class, and then told my parents. By the time their parents take them for examination, their eyesight has often declined seriously, and most of them have missed the best rehabilitation opportunity to prevent myopia. Experts believe that parents have a great responsibility in preventing and treating juvenile myopia, so parents and children should develop good eye care habits.