According to the classification of lens materials, contact lenses can be divided into hard contact lenses and soft contact lenses. Soft contact lenses are familiar to everyone, and hard contact lenses have also begun to receive attention recently. So, what is the difference between hard contact lenses and soft contact lenses, and how to choose?
Rigid contact lenses, also called RGP, are made of polymers containing silicon, fluorine and other elements. They have excellent oxygen permeability. They are often used for the correction of myopia in adolescents. The correction effect is ideal, and the anti-precipitation performance is strong and can be longer. Time to wear. However, the material properties also affect the comfort, which makes it easy to produce foreign body sensation when wearing it, and it takes a longer period to adapt to the initial wearing. The cost of fitting hard contact lenses is relatively high. At present, they are not particularly popular in the market, and they usually need to be fitted in an eye hospital.
Soft contact lenses are more common, and the color contact lenses that everyone loves usually belong to this category. Soft contact lenses have high water content, soft materials, comfortable wearing, and short adaptation period. Even novices can easily learn to wear them. However, the biggest disadvantage of soft contact lenses is that they are thin and fragile, especially the edges are prone to cracks, so you need to pay special attention to the operation.
For contact lenses of two materials, the principle that should be followed in the selection is that the best for you is the best. When you intend to buy contact lenses, you should first undergo a special eye examination, and consult a doctor to make a scientific and reasonable choice based on the actual situation.
All in all, whether it is hard contact lenses or soft contact lenses, we must pay attention to the operation and care of the work. Although the two are slightly different in specific operations, they both require maintaining eye hygiene and insisting on proper eye use.