What are the disadvantages of RGP hard contact lenses?
RGP is the abbreviation of Rigid Gas Permeable Contact Lens. RGP contact lenses not only have all the advantages of soft contact lenses, but also have extremely high oxygen permeability and long-term moisture retention. Due to the hard material and good formability, the field of vision brought by RGP contact lens will not be deformed, and the stereoscopic sense is stronger. The correction effect of keratoconus and irregular cornea patients is especially good. However, RGP contact lenses are not without their drawbacks.
In general, wearing RGP contact lenses can cause a strong foreign body feeling. In the early days of wearing RGP contact lenses, the comfort is very poor. It can take up to two weeks to get used to them, and once they get used to them, there is still a distinct foreign body feeling. Therefore, once you choose RGP contact lenses, you must use them regularly, or you will need to get used to them again.
RGP contact lenses are more demanding on the environment. When wearing RGP contact lenses, dust, debris, particles and other substances are very easy to enter between the lens and the eyeball, causing severe discomfort of the eyes, then the lens must be removed immediately to clean, so teachers such as the occupation of frequent exposure to dust is not suitable.
RGP contact lenses, after all, still touch the cornea, which can make the eye sensitive and dry. Excessive dryness can also make it difficult to pick up the mirror before it is fully acclimated. Of course, these symptoms can be relieved by stopping wearing them, but if they are already sensitive eyes, they can still affect daily life.
The cost of RGP contact lenses is actually very high, and it is necessary to go to a professional eye hospital to get glasses, a pair of which will cost several thousand yuan. Although its service life is as long as 1-2 years, the cost of follow-up care and examination is relatively high. Therefore, it is necessary to have a detailed understanding of the advantages and disadvantages of RGP contact lenses before lens matching.