Ever heard of RGP? AKA Rigid Gas Permeable Contacts
There are two general classifications of contact lenses. Soft lenses, which are most commonly worn today, are pliable and breathable. These are a great choice for most contact lens wearers. The other type of lens is referred to as “RGP” which stands for rigid gas permeable lenses. “Gas perms” (as some optometrists refer to them) are made of a durable plastic and silicone. The silicone present in the lenses allows these lenses to transmit oxygen more easily than conventional soft contact lenses.
Are they really rigid?
Yes, RGP lenses are more rigid in shape, which makes them more durable. They are also more resistant to protein and lipid deposits and other ‘gunk.’ When too much of this ‘gunk’ builds up on your soft contacts, you have to replace them with a new set. On the other hand, you can expect RGP lenses to last a long time (think years!), which can be less expensive over time.
Who should consider RGP lenses?
Rigid gas permeable lenses are recommended for those people who feel as if soft contact lenses aren’t a great fit for them. Because the RGP lens is firm, it maintains its shape against your eyes over time. This allows the lens to sit closer to the eye and helps the quality of your vision.
If you’ve had LASIK (Laser-assisted in-situ keratomileusis) eye surgery and now need additional vision correction, RGP lenses might be your best (and perhaps only) option. Once your eyes have been adjusted through LASIK, soft contact lenses may not fit properly anymore. RGP lenses can be an option for those who don’t want to go back to glasses after LASIK.
RGP lenses are also smaller in diameter. This makes them a top choice for anyone with a misshapen cornea.
Do RGP lenses dry out faster?
Another quality of RGP lenses is that they retain moisture well. They don’t require moisture from your eye to retain their shape, keeping your eyes from feeling dry or irritated.
Why don’t more people wear rigid gas permeable lenses?
Rigid gas permeable lenses require a little more time to adjust to and require more maintenance than soft contact lenses. They must be taken out every evening, so if you’re looking for overnight lens wear, GPs are not for you. The RGP lenses move when you blink, so your eyes are susceptible to dust and debris.
If you’re not enjoying the fit of your soft contacts, have had LASIK surgery, or are experiencing cornea issues, ask your optometrist if RGP lenses are a good option for you.
