Modern contact lenses are considered very safe. In addition they are long-lasting ( unless we are talking disposables) and mostly very comfortable Yet, there are some hazards and restrictions in wearing them and knowing what those are can help you pick out the type that’s advisable for you. It goes without saying that those decision should only be made with the help of your eye doctor
Rigid Gas Permeable lenses have been around since 1986 The more modern design allow for up to 5 times oxygen to pass through the lens than the earlier models The more oxygen can reach through the less the chance of a corneal infectionIn other words the less oxygen makes it through the higher your risks of an infection.
On the downside, RGP lenses are a little less flexible than other types, making them less comfy for some. But, they may be better for correcting astigmatism as a result. They also can last up to 2-3 years, which is longer than regular soft contact lenses. Many will wish some type of soft lens, made from unique hydrophilic plastic polymers that allow for a lens that is flexible and therefore more comfortable. Although the risk of tearing the lense has been greatly decreased in recent years because of better manufacturing techniques. They still demand a more frequent replacement Soft lenses also stay in place extremely well and demand a shorter adjustment period.
Yet, for many, a hard lens is still the only choice. While oftentimes less comfortable, and even though they raise the odds of scarring or infection slightly, their inflexibility is critical. Their eyes simply demand the rigidness and they put up with the less comfortable wear in order not to require glasses again. Also certain types of astigmatism cannot wear soft lenses. In addition to the picks named above there a re still various other alternatives.
Daily wear contacts are intended to be worn during the day, then removed before bed. They’re used by about 80% of contact lens wearers. Here the pros and cons get more evident. It can be a minor bother to insert and remove contact lenses every day. Whenever they’re removed they have to be sterilized, usually overnight, before re-inserting the following morning..
On the plus side these daily wear contacts allow for currently the best selection when it comes to minimizing the risk of scarring or eye infection By taking them out at night you provide your eyes to unwind and get exposed to the air once again. Even the best rigid lenses today are limiting the oxygen supply somewhat that the eye will get.
ALos by taking them out before bedtime there is naturally zero risk of having the lense slide off during the night – which could be rather painful in the morning.
Still, touching the eye and/or the contact is also not entirely without risk, and the work is a little awkward. Fewer transfers can also be good. For those whose doctors say it’s safe, extended wear contacts are a great option. These can be worn from as little as overnight to up to 2 month depending on your condition and the desigh
That convenience factor comes at a price, in dollars and risk.
The have a tendency to be higher prized and as remarked before the supply of air to the eye is somewhat restricted. Another factor is plainly the fact that they sit longer in the eye, so your odds are going up a little bit that something goes wrong.
Also the stiffness of these contact lenses mentioned before makes them less comfortable. Nevertheless if your eyes allow to wear the long term contact lens models your chances of finding problems are quite low.
Check out all the choices you have with your eye doctor and you certainly will find the perfect pair of contact lenses for you
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