When talking with the interlocutor, we first of all pay attention to his eyes. How do you feel about people who wear glasses? Yes, a tastefully selected frame transforms the appearance of a person and makes the image more interesting. But many people still prefer to do without glasses. And in some cases, due to the characteristics of the profession, for example, wearing them is simply unacceptable. It is also known that with astigmatism, the cylindrical glasses of glasses do not always allow you to correct the problem.
Comfortable and modern
Many issues regarding vision problems are resolved by contact lenses. Modern technologies for their manufacture have made these optical devices not only effective in focus adjustment, but also very comfortable to wear. 
These qualities were especially appreciated by people whose profession requires good vision, but wearing glasses is very difficult. This, for example, athletes, stuntmen, theater and ballet actors, circus performers, as well as motorcyclists and people working with steam.
The offer of contact optical devices in the modern market is more than large. The main problem now is the difficulty of choice. Many of us are wondering: “Which lenses are good?” In order to give an answer to it, you need to understand who is shown wearing this optics, and also consider the classification of these devices.
Who needs to wear lenses?
Ophthalmologists today increasingly recommends wearing contact lenses to patients who have the following problems:
- The presence of hyperopia or myopia in a high degree. In these cases, these optical devices can give a person much better quality of vision and excellent clarity.
- The patient cannot tolerate correction with glasses or is not satisfied with its results.
- The presence of anisometropia effect, when the difference in diopters between the eyes is more than 2.5.
- The patient has astigmatism. If its indicator does not exceed 0.75 diopters, then ordinary contact lenses of a spherical profile will help to cope. In the case of astigmatism, wearing optical devices of a toric form or hard workmanship is more highly recommended.
If the doctor recommended that the patient wear contact products for vision correction, the first question that arises in the latter is: “Which lenses are good?” Experts say that a universal and ideal solution that could help every patient does not exist. 
Based on the individual characteristics of each person and the presence of a certain problem, the doctor selects an acceptable type of lens.
What criteria should they meet?
For those who are interested in the question: “Which lenses are good?”, Experts recommend that when choosing these optical devices pay attention to the following criteria:
- Wear resistance and ability to withstand mechanical damage. Lenses that can crack at the slightest touch can harm the cornea, which can lead to serious problems.
- Lens change rate. A simple and consistent rule applies here: the more often, the better. Devices with a short life are considered safer - in this sense, planned replacement products are the best.
- The price of annual lens wear. As experienced users of these optical elements of vision correction note, the more expensive they are, the better they are characterized. But it is worth remembering that some varieties can be very expensive just because of the brand. There is always room for a reasonable price-performance ratio.
- Gas permeability. This is a very important indicator, compliance with which will help to avoid many problems and make wearing lenses comfortable. The greater the gas permeability of the device is characterized, the better. Therefore, in the question of which lenses are best for eyes to choose, it is especially important to take this criterion into account and to prefer those products that allow the cornea to breathe.
- Simplicity of operation. It is logical that this criterion is decisive for many people in choosing suitable lenses. But here you need to trust the mind, and not momentary impulses. When choosing ultra-thin lenses that are certainly comfortable to wear, consider whether you can easily replace them.
Of course, it is quite difficult for a novice user of these optical elements to decide on their own which lenses are good. In this regard, it is worth completely trusting a specialist.
What types of lenses are there?
Various approaches can be used to classify contact lenses. Optical devices are divided into different types depending on the criterion being evaluated.
Rigidity
According to this characteristic, the lenses can be hard and soft. Each type has its advantages and disadvantages. Let's take a closer look at both types of contact products for vision correction.
Hard lenses
Hard contact corrective devices are pioneers in their environment. Previously, they were made of glass or polymethyl methacrylate, did not let air through, needed boiling and special care products. But, fortunately, modern hard lenses based on silicone are gas permeable and have a lot of advantages:
- They are dense, hold their shape well, do not deform when blinking, and give stable image clarity.
- More convenient to use for the elderly.
- They have high strength and wear resistance.
- Resistant to protein deposits from the lacrimal environment, which lengthens the term of their comfortable and safe operation.
- Their diameter is smaller than that of soft lenses and the cornea. This gives free access to oxygen and does not interfere with normal tear exchange.
- They do not contain water, do not dry in the heat and in the wind, do not need to be moistened with special drops.
- They have a long service life, which is cost-effective. The need to replace hard lenses arises only when the quality of the user's vision changes.
What is their uniqueness?
In certain situations, only optical devices of this type can correct vision. With severe astigmatism, keratoconus, presbyopia, and for orthokeratological correction, it is precisely hard contact lenses that are optimal . Which is better to choose? The answer to this question can be given unambiguously by an oculist based on the individual needs of the patient. 
Hard lenses have some disadvantages:
- Need a period of adaptation. You need to get used to them - it will take up to a week.
- When using them, the shape of the cornea changes, and the spectacle correction ceases to work.
- The selection of a rigid lens based on silicone, ideally suited to the size, is a laborious and costly process.
However, manufacturers of this type of optical devices are constantly improving their quality and trying to make them as comfortable as possible to wear. If you are considering the question of which lenses are better for eyes with astigmatism, then of course we are talking about hard ones.
Soft lenses
A feature of these devices for vision correction is their special flexibility, to which they owe a high water content. Soft lenses are very comfortable to wear and allow oxygen to pass through. Basically, they are made of silicone hydrogel or hydrogel. The last substance is able to dry and deform. In combination with silicone, it promotes the best transport of oxygen, and moisture evaporates not so intensively. The combination of positive qualities of these vision-correcting devices makes them popular, and many prefer soft contact lenses. Which is better to choose from the huge variety of profile products presented can only be advised by an experienced specialist after a series of studies of the patient’s eyes.
Is soft lenses suitable for everyone?
Ophthalmologist consultation is important for several reasons. First, only a specialist can determine the degree of curvature of the patient’s cornea and give recommendations on which soft lenses are best suited in a particular case. Secondly, there are a number of contraindications to the use of these devices: diabetes, sinusitis, tuberculosis. Also, soft lenses can not be used for those people who are constantly in contact with dust and chemicals, are allergic to silicone and hydrogel, often suffer from eye infections and are not able to fully care for vision-correcting products.
The structure of the soft lenses is such that they perfectly fit their back surface to the surface of the cornea, and their front part has the shape of a cylinder, which produces a corrective effect. Therefore, with pronounced astigmatism, this type of product is impossible to apply. 
To the question: “What are the best lenses?” most users say they’re soft. This is justified by their clear advantages:
- There is no need for adaptation, it is comfortable already on the first day of using these products.
- Acceptability for round-the-clock use for a period of 30 days.
- The patient himself can choose the frequency of lens replacement - daily, once every two weeks, monthly, once every six months or more.
But soft lenses are not without flaws:
- Great inconvenience for people with astigmatism (lens slipping).
- A significant degree of adsorption of particles from the air and from the surface of the hands.
- They can lose moisture in the eyes during wind and heat, causing dry eye syndrome.
- They need to be constantly moistened. When dried, tiny cracks form on the surface of the lenses and they become unusable.
- They require careful care and cleaning from organic and inorganic deposits.
Obviously, each type of lens has its advantages and disadvantages. The question of which lenses are best to choose is determined strictly by medical indications.
Continuous Wear Duration
According to this indicator, lenses are divided into the following types:
- For daily use (up to 18 hours of continuous use).
- Variable use (1-2 days of wearing).
- Long-term use (from a week to a month).
As for which lenses are best to choose, this is a question of the patient's own needs and comfort. There are special corrective products with therapeutic effect, which are intended exclusively for night wear.
By the frequency of replacement of a pair of lenses
Based on this criterion, devices for vision correction are divided into the following types:
- For wearing the traditional type (for a period of 6-12 months).
- To use the planned type (for 1 day, for 2 weeks, for 1 and 3 months).
If you ask the opinions of users of a variety of optical products for vision correction about which lenses are better, you can hear the most diverse reviews. 
Someone prefers traditional ones, others like one-day ones. Ideas about the best and most comfortable lenses are very individual, as well as the needs of each individual person.
One day
Novice users of vision correction items should pay attention to one-day lenses. Which is best suited for a particular person, an experienced specialist can decide. The offer of these products today is quite large. Their peculiarity is that after one day of use they should be discarded. This option is very convenient for those who spend a lot of time traveling and do not have the opportunity to care for the lenses. In addition, plaque of organic mineral origin does not have time to accumulate on them, they do not form ulcers on the cornea.
Since the cost of one-day lenses is quite high, it is beneficial for those who wear lenses from time to time to use them. For example, if you purchase two-week items, you will have to replace them no later than the planned date, even if they were worn only 1 time.
If you decide for yourself that you will use one-day lenses, which ones are better to choose from the options offered in the store? They are presented below in ascending price per package:
- Bausch & Lomb.
- Ciba Vision.
- Maxima.
- Johnson & Johnson.
- Cooper Vision.
- Sauflon.
Two week
This type of correction items is very popular among the population of our country. They are easy to use, do not need special enzymatic purification. For care, they will only need to be disinfected on time and stored in a special solution. When thinking about which two-week lenses are better, do not forget that wearing them implies a night break. If you use them around the clock, then they must be replaced after 7 days. 
Two weeks of wearing the Pure Vision 2 HD and ACUVUE Advance with Hydraclear from Johnson & Johnson Vision Care deserve good consumer reviews.
For a month
This type of vision correction product is worn for 30 calendar days with a break for the night, which is why they are called “monthly lenses”. Which is better, an optometrist can advise, but you should pay attention to the contact devices Maxima Si Hy Plus. They are made of silicone hydrogel, comfortable to wear, well biocompatible, perfectly oxygen permeable and do not accumulate deposits of various kinds. 
It is worth emphasizing once again that the guarantee of successful wearing of contact lenses is their professional selection. Taking into account your individual characteristics and needs, an ophthalmologist will help you find exactly the option that will provide perfect vision and the absence of discomfort when using these correction items.