Gas Permeable (GP) Contact Lenses
Also named as GP lenses, rigid gas permeable lenses, RGP lenses and oxygen permeable lenses, gas permeable contact lenses are a type of rigid lenses which are made of oxygen-transmitting durable plastic. Most people may have heard and worn the old-fashioned hard contact lenses which are made of PMMA. Totally different from the outdated hard contact lenses, GP lenses are more advanced as they offer us more eye health and they are easier to clean and handle. Another distinctive point of GP lenses is their remarkable durability.
Why are GP lenses so out of the ordinary?
1. Special oxygen permeability
The craftsmanship of GP lenses has exploited gas permeable contacts that were first introduced in the 1970s. Acknowledged as better, those soft lenses, rigid GP lenses, incorporated by a type of more flexible material called silicone, are well accepted to be comfortable and cozy to wear. Moreover, the most distinctive feature of GP lenses is being oxygen permeable. Oxygen is free to pass through GP lenses and in this way our eyes are better protected and in a more comfortable position. Oxygen is not merely critical to our life force but also functions as our eye protector and savior simply via GP lenses.
2. Stronger practicability
When we say GP lenses are of stronger practicability, we actually mean that they can be custom made for every one and they are particularly durable and resistant. Whatever your cornea shape and prescription are, GP lenses can be uniquely made right for your unique curvature, size and corrective power. With the increasing improvement of contact glasses manufacturing, GP lenses are boasted to be thinner, larger and smoother in the edge. All these progressions made in GP lenses ensure wearers good comfort and crystal clear vision.
Who are especially in need of GP lenses?
GP lenses are in general fit for every individual, but at the same time they are more than ever suitable to those who feel uneasy with the obsolete soft lenses.
1. People who are in pursuit of high-quality vision can resort to GP lenses.
2. GP lenses can be all the more contributive to correcting astigmatism. People suffering astigmatism can replace their soft contacts with GP lenses which are to provide them with more desired vision acuity.
3. GP lenses can be of bifocal and multifocal design which does good to people with presbyopia.
4. GP lenses do a big favor to people whose cornea is cone-shaped which causes visual distortion by the use of soft lenses.
5. People who have just recovered from eye laser surgery can turn to GP lenses for a more safe and comfortable wearing.
Some extra things you should know about GP lenses.
It is a fact that now GP lenses are not as widespread as soft lenses. The main reason is that it will take a period of time for people to adapt to GP lenses while soft lenses are more adaptive and instantly comfortable. Put aside for a few days, GP lenses would not be so easy to wear as before. You will need another adaption period. Moreover, GP lenses are to move on the eye as wearers blink, so it is necessary to be careful of the risk of dust and debris sneaking under the lenses. In short, wearers should be careful about GP lenses because they are expected to last for at least one year.