Choosing Contact Lense - The Do’s And Do Not’s
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 dangers and limitations in wearing them and knowing what those are can help you pick out the type that’s best for you. It goes without saying that those decision should only be made with the help of your eye doctor
Since 1986 many have opted for Rigid Gas Permeable contact lenses. Popular designs allow for up to five times more oxygen dissemination through the plastic than those of the past. The more oxygen can pass through the less the risk of a corneal infectionThe less oxygen that makes it to the eye, the higher the odds of an infection.
On the downside, RGP lenses are a little less flexible than other types, making them less comfortable for some. The advantageous side is that they are better for rectifying astigmatism and can last up to 2-3 years, which is much longer than your typical soft contact lense. Because of those comfort restrictions many will opt for the soft lense type that’s typically made from hydrophilic plastic polymers that make the lense more flexible, hence more comfortable Although the danger of tearing the lense has been greatly reduced in recent years because of better manufacturing techniques. They still require a more frequent replacement Soft lenses also stay in place extremely well and require 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 rigidness is critical. In addition to the options noted above there a re still several other choices.
The so named daily wear contacts are designed to be worn during the day and taken out when you go to bed. They make up approx. 80% of all contacts worn. It’s easy to view the positive and negative sides on these.First it’s a little awkward to take them out at night and reinsert them in the morning once more, they also have to be sterilized before putting them in again the next morning.
But daily wear contacts (currently) provide the best possible option for those looking to attain the absolute minimal risk of eye infection and scarring. By taking them out at night you allow your eyes to relax and get exposed to the air again. Even the greatest rigid lenses today are limiting the oxygen supply slightly 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 completely without risk, and the process is a little awkward. Fewer changes can also be good. For those whose doctors say it’s safe, long-term wear contacts are a easy alternative. These can be worn from as little as overnight to up to 2 month depending on your condition and the desigh
Yo will pay for that convenience though in dollars and some risk factors
The have a tendency to be higher prized and as mentioned before the supply of air to the eye is moderately confined. Another factor is simply 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 remarked before makes them less comfortable. However if your eyes tolerate to wear the long term contact lens models your chances of encountering problems are quite low.
Investigate the selections in interview with your eye care professional and you’ll soon find the right pair of contact lenses for you.