Lenses: which ones are better?
Let's look at the most commonquestions that disturb people who have vision problems. Those who wear glasses know perfectly well that glasses are not always appropriate, they interfere with daily life, and sometimes turn into a real curse. They are not relevant when doing sports, traveling, in intimate settings. They constantly break down, mist up, scratch, get dirty. You do not even go to the shower with them. And, most importantly, not all glasses are suitable, even very expensive.
Contact vision correction
This problem can be solved in two ways:contact lenses and laser vision correction. It's not so easy to decide on an expensive operation. The consequences of the operation can be sad, and the effect is irreversible. Contact lenses are a worthy alternative, they can be discarded at any time, and return to glasses.
Which lenses are better
In the world, millions of people wear contact lenses, notwhile experiencing no problems. Manufacturers of contact vision correction products use the latest materials. Lenses keep your eyes healthy, and vision - clear and clear. A person using contact lenses does not feel discomfort from using them, they even sometimes forget that they are in front of them.
Before buying lenses, you need to visit an ophthalmologist. For the selection of lenses you will need to measure the diopters, the basic curvature and the diameter of the contact lenses.
Which lenses should I choose? Buying lenses for the first time, people are tormented by this issue. There are two types of contact lenses - the lenses of the planned replacement and the traditional term of wearing. Lenses of the traditional term of wearing are used for three months or more, and the lenses of planned replacement are changed once a month, or, even more often. The most harmless to the eyes are lenses with the least wear.
Many people ask, what are the good contact lenses? The best option is one-day contact lenses. They use only one day, and throw out, the next day a fresh clean pair of lenses is used. Using such lenses, you will not need to buy lens care products, because they do not need to be cleaned and stored. You just need to always have a couple of new lenses in stock.
If your choice has settled on lensesa two-week and a month's service life, then pay attention to the lens material. The most common material for lenses to date is a hydrogel or a silicone hydrogel.
Types of material
Each kind of material has its own peculiarities atcare. Hydrogel lenses will need solutions with a strengthened component of protein purification, because they are more susceptible to contamination with protein deposits. Silicone-hydrogel lenses are more susceptible to contamination with fats, so they are suitable solutions with increased ability to purify lipids.
Lenses from silicone hydrogel are the lenses of the followinggeneration. They have a higher percentage of oxygen permeability to the cornea, they do not cause redness of the eyes and hypoxia. They are convenient to use because of greater elasticity.
Using traditional contact lenses,It is recommended that they be worn longer than the dates indicated on the package. Lenses of long life should be cleaned with peroxide cleaning systems or enzyme tablets. In addition, you need to use moisturizing drops for the eyes, so that wearing the lens was more comfortable.
For those who wear glasses, an urgent issueis what is better lens for glasses - Glass or plastic? Both mineral (glass) and polymer (plastic) lenses for glasses have the same optical properties. But, here from the operation side there are several differences:
- Plastic lenses are lighter than glass lenses.
- Plastic is shockproof, it does not break, so plastic lenses are safe.
- For plastic lenses there is more choice of frames, open frames with lens mounts on the line or screws are suitable for them.
- Plastic lenses can be painted in any color.
That's why lenses remain so in demand and are valued in the optics market. Yes, they are not as convenient as glasses, but they allow you to forget about wearing glasses, feel freer.