Contact lenses have many more advantages compared to glasses. They are completely invisible to the eyes and easy to use. In addition, wearing lenses you can freely play sports and lead an active lifestyle.
But not every person can afford to wear contact lenses. The reason is discomfort. For some, tears begin to flow from behind the lenses, for others, dryness and redness appear, and allergies can often develop. But even in this case, you can choose suitable lenses made specifically for sensitive eyes.
We will talk about the features of such lenses and how to choose them correctly in this article.
The best daily contact lenses
Miru 1day Menicon Flat Pack – one-day Japanese contact lenses.
The thinnest blister in the world - 1 mm thick. It will fit into any pocket, wallet and even business card holder. The blister platform holds the lens in the correct position with the outer side up - contamination of the inner surface in contact with the eye is excluded.
Miru 1day Menicon Flat Pack provides consistently high visual acuity and optimal corneal hydration throughout the day. Among analogues, lenses stand out due to their hydrophilicity and resistance to drying out. This is especially important during visual activity that requires concentration, when the frequency of blinking decreases: during prolonged work at the computer, driving a car, or playing sports. Plastic material and reduced lens edge thickness guarantee a comfortable fit and comfort while wearing.
Official website - www.novalexgroup.ru
Miru 1day UpSide
Miru 1day UpSide are Japanese premium silicone hydrogel contact lenses. Among their analogues, they stand out due to their high oxygen permeability and optimal moisture content for eye health. The smart blister design ensures hygienic and convenient lens removal.
Miru 1day UpSide is the softest among analogues on the market of contact correction products: the elastic modulus is only 0.36. MeniSilk™ Air material with a special discharge structure allows oxygen to pass through several times better than hydrogel lenses. This guarantees comfort when used from morning to late evening. Thanks to the ultra-precise plasma surface treatment of Nanogloss™ Pro, the lens is unsurpassedly smooth: this allows it to always remain clean, transparent and well-hydrated.
In addition, Miru 1day UpSide protect the eye from harmful ultraviolet radiation.
Official website - www.novalexgroup.ru
CooperVision Proclear 1 Day
High-quality contact lenses for daily wear are ways to correct farsightedness and nearsightedness. They provide a fairly high level of moisture content.
In addition, buyers are pleased with the fact that they do not need to purchase a special solution for storage. Experts have long recognized these optical products as comfortable to wear and unable to cause dry mucous membranes.
ZEISS Contact Day 1 spherical
One-day lenses made of high-quality bio-hydrogel material are light blue tinted. They perfectly protect against the negative effects of ultraviolet rays and are suitable for use exclusively during the daytime.
Buyers respond positively to the optimal moisture content, as well as moderate thickness.
Dailies (Alcon) Total1
Expensive, but very high quality and truly worthy of attention, contact lenses are designed to correct myopia as well as farsightedness. They are famous for their moderately high level of moisture content.
When worn, these optical products are not only not felt, but also do not irritate the mucous membranes of the organs of vision. The material here is thin, so it takes some getting used to - this point is the only drawback, because otherwise the lenses are almost perfect.
ZEISS Contact Day 1 toric
Biohydrogel contact lenses from a well-known brand cannot but please people with poor vision, as they do an excellent job of increasing visual acuity. There is an optimal moisture content here.
The tint on this model is light blue. Lenses are only allowed to be worn during the daytime. They are sold in a package of 32 blisters, and are sold at a low price, which is why buyers often call this product economical.
Lens care
One-day correction products do not require any maintenance - this is one of their main advantages. You just need to follow the general rules for putting on, taking off and wearing - work with clean hands, carefully place in your eyes, protect them from street dust. Minimizes time and effort during use.
Two-week-old models, which the owner removes at night, should be stored in a standard multifunctional solution and, if the ophthalmologist so advises, sometimes disinfected in deep-cleaning peroxide compounds. Every evening you will have to spend 3-5 minutes on the procedure.
As a conclusion, we can say that if you need maximum sterility, you should choose the one-day option. If hygiene is important, but at the same time you want to save some money or wear lenses continuously, you should pay attention to two-week models.
The best contact lenses for a month
Miru 1month Menicon
Miru 1month Menicon are breathable, monthly disposable silicone hydrogel lenses. Water-loving lenses with exceptional oxygen permeability (161 Dk/t) are characterized by a comfortable universal fit and wearing comfort. Legendary Japanese optics guarantee highly accurate vision correction over the entire range of refractions. Nanogloss™ plasma surface treatment technology for ultra-smooth and wet lenses and minimal edge thickness allow the user to blink freely and not think about the lenses while wearing them.
Miru 1month Menicon is available in two base curvatures, making it suitable for users with different corneas.
Official website - www.novalexgroup.ru
Menisoft
Japanese Menisoft are created using a turning method, which achieves high quality optics. In addition, the exceptional visual acuity when using these lenses is due to the asphericity of their outer surface. The aspherical surface of the inner surface is responsible for a comfortable fit. The lenses are resistant to drying out and remain moisturized throughout the day.
Menisoft are suitable for people with dry eye syndrome: their moisture content is 72%. The lenses meet all the requirements of modern users, but at the same time are affordable. A high-tech turning method has been introduced into the production process: it ensures precision processing of the optical surface for special visual acuity.
Official website - www.novalexgroup.ru
Air Optix (Alcon) Aqua
Contact lenses with the best oxygen permeability are produced in Switzerland, where specialists really know a lot about medical products.
The main advantages of this model include the following: reliable protection against dirt and various lipid and protein deposits, five-fold oxygen permeability, the possibility of prolonged or flexible use.
It is not recommended to wear lenses at night, as they may cause discomfort.
Maxima 55 UV
Lenses with a thin profile and protection from ultraviolet rays are renowned for their ease of use and high oxygen permeability. They provide light coloring, due to which the products are clearly visible in the solution.
As for the negative qualities, among them buyers highlight only the absence of a special solution for cleaning and storage in the kit.
ZEISS Contact Day 30 compatic spherical
The option with a light green tint and optimal moisture content is also pleased with the bio-hydrogel material of manufacture. Such lenses improve vision quite well and do not even irritate the mucous membrane.
Wearing comfort is ensured by the perfectly shaped edge of the lens. Other advantages include the following: protection from ultraviolet radiation, sufficient diopter range, comfort during frequent blinking.
CooperVision Biofinity
Monthly contact lenses attract the attention of users due to their flexible wearing mode, natural moisturizing material, and oxygen permeability. For them, it is allowed to use non-special drops, which is also a big advantage.
The price here is average, but you really have to pay a lot for real quality, so people don’t consider this fact a particular drawback.
What you need to know about such lenses
Sensitivity of the eyes may occur due to frequent exposure to smoky, dusty and stuffy rooms, due to foreign bodies entering the eye or constant wearing of contact lenses.
Acuvue contact lenses
Traditional and quarterly replacement lenses are not suitable as lenses for sensitive eyes, since protein deposits and other small foreign bodies accumulate on their surface, causing discomfort.
For sensitive eyes, experts recommend using daily contact lenses that provide good eye hydration and also have good oxygen permeability.
Eye sensitivity refers to the following problems:
- Dryness, redness, rapid fatigue. These problems arise due to prolonged work at the computer (computer vision syndrome may appear), smoking or being in a smoky, stuffy room, or taking medications.
- Allergic reactions, accompanied by dryness, redness of the eyes and excessive tearing. Allergies are triggered by dust, decorative cosmetics, medications, odors, and so on.
- Tearing. It occurs due to excess tear secretion or due to disruption of the tear ducts. Excessive tears can be a symptom of a disease.
- Resi. Many eye diseases, such as conjunctivitis, are accompanied by this symptom.
- Fear of light. A person reacts to light even in normal lighting.
Reasons why ophthalmologists recommend using special lenses for sensitive eyes:
- The cornea is provided with sufficient oxygen. It is necessary to pay attention to the DK/L ratio. D – oxygen diffusion coefficient, K – gas distribution coefficient, L – lens thickness. The higher this indicator, the better.
- High level of moisture in lenses. If the lens material is sufficiently moistened, the eyes will not experience dryness and discomfort. It should be remembered that a material such as hydrogel takes moisture from the surface of the eyes. If the percentage of moisture content is more than fifty percent, then dry eye syndrome may develop. Therefore, it is better to choose silicone hydrogel lenses.
- Optimal time of use. For example, one-day lenses need to be put on in the morning, and in the evening, when you go to bed, you need to throw away this used pair. In such a short period of time, deposits do not have time to accumulate on the lenses, so the risk of developing allergies or inflammation is minimized.
The best long-term wear contact lenses
Bausch & Lomb Optima FW
Long-lasting hydrogel contact lenses are designed to be worn for several months, but not more than six months. They are made of high quality material, have as many as three radii of curvature and are able to create a natural look.
The only thing that customers don’t like is that there aren’t many diopters in the range.
OKVision Season
An option with excellent characteristics and an optimal price-quality ratio is liked by people for its decent choice of optical power. They are, of course, comfortable to wear, which is why they are sold very often.
There is only one radius of curvature, so these products are not suitable for all people, because everyone’s eyes are different.
GELFLEX Sea Clear Vail
Lenses are allowed to be worn for a period of 3-6 months. Fat and protein particles do not accumulate on their surface. The edges here are ultra-thin, so there is no question of discomfort when wearing.
The material used to make optical products is quite flexible and elastic, due to which the lenses do not blur on the finger and make putting them on easier. Also pleasing is the fact that this product is tinted in the mass, and therefore is clearly visible in the container with the cleaning solution.
CooperVision Biomedics 38
Popular contact lenses made from reliable and durable material are sold in quantities of 6 pieces at a competitive price. You can wear them for up to six months without thinking about a blurry picture before your eyes or irritation of the mucous membranes.
Such products are not felt on the pupils even after blinking for an hour. The most important thing is to take proper care of them so that there are no problems when putting them on and taking them off.
Interojo Morning Q55 vial
Budget lenses with a couple of radii of curvature do not cause the visual organs to get tired and irritated. They are always comfortable to wear, even if you sit in front of a computer or TV for a long time.
The optical power of the products is also quite satisfactory to buyers, so no one has had any complaints about this model yet.
The best Acuvue contact lenses
Acuvue OASYS 1-Day with HydraLuxe
Ideal lenses for people who are constantly in front of gadget screens. They guarantee all-day comfort. These contact lenses are made of hydrogel silicone - it allows oxygen to pass through perfectly and is not felt on the eyes.
They are sold in an individual container, which ensures the sterility of the products - the penetration of dust, moisture and contaminant particles is completely excluded.
Acuvue Advance with Hydraclear
The two-week version from a popular manufacturer is famous for its excellent oxygen permeability and moisture content. They can be worn at different times of the day and night, as they do not cause discomfort.
As consumers note, during the use of contact lenses there is no dryness in the eyes or irritation of the mucous membrane.
Acuvue 1-Day Moist for Astigmatism
Toric lenses are designed to correct astigmatism, as the name suggests. They are comfortable and have a stylish design, which at the same time allows you to maintain the correct position when using the product.
The manufacturing material is hydrogel - it is breathable, does not allow the organs of vision to feel dryness or irritation, and is able to block ultraviolet radiation. In addition, these lenses are easy to put on and take off as they are quite soft and thin.
1-Day Acuvue TruEye
Truly breathable lenses have good oxygen permeability and moisture content. They can be used without discomfort for 12-14 hours, and no irritation or dryness will occur in any case.
These optical products are the most advantageous option for those people who are constantly at the computer or have a hypersensitive cornea. But the purpose of such lenses is to correct farsightedness and myopia.
Acuvue OASYS with Hydraclear Plus
Hydrogel contact lenses protect their owners from ultraviolet radiation. It is always convenient to work at the computer or watch TV with them.
The material of optical products contains moisturizing components that prevent the mucous membranes from drying out or becoming irritated as a result of prolonged wear.
The solution also contains conditioning substances - they are necessary to cover the lenses with a thin film for long-term hydration.
Which lenses are better monthly or biweekly?
Daily lenses are soft corrective optics. It should only be used during the day. These types of lenses are very expensive, but have many different advantages. First of all, they do not require any additional care. After time has passed, you simply throw them away. They are convenient to use for those who are constantly traveling and on business trips. They will save time while getting ready, and they are also comfortable to use on the road. Also, ephemera preserve eye health. When wearing them, the risk of various problems such as ulceration or redness of the cornea is reduced.
It is also worth noting that patients also like daily use lenses because their eyes do not come into contact with chemicals used for care. Typically, deposits begin to form on the surface of the lens from the moment it is placed in the eye. Their number may increase, and this despite disinfection and constant cleaning. Therefore, people who wear lenses may develop allergies due to deposits. One-day lenses eliminate this problem. You can view the models and prices of such lenses here: www.luxlinza.ua/kontaktnye-linzy/odnodnevnie/
So, daily lenses, despite their high cost, have many positive characteristics. They do not require a special container to be placed in for storage. By the way, such containers also need care so that they do not become a source of infection over time. Daily lenses are comfortable to wear and provide clear vision. Visual acuity in such lenses always remains unchanged.
In addition to them, two-week lenses are available for sale. If the above type of lenses needs to be thrown away in the evening, then such lenses must be placed in a special container. It should contain an antibacterial solution. After this procedure, the lenses can be reused. Note that two-week lenses are also convenient and comfortable for the eyes. You don’t even have to take them off at night, but then the service life will decrease from fourteen days to seven. They are much cheaper in cost than disposable lenses. And if you wear them regularly, the lens will adapt to the characteristics of your eyes and become more comfortable. Of course, over time, vision clarity may decrease due to lipid and protein deposits. And foreign bacteria can appear in microcracks. Therefore, such lenses are an intermediate link between daily and monthly lenses.
When making monthly lenses, silicone hydrogel material or hydrogel is used. It is quite elastic and allows oxygen to pass through well. It is convenient to sleep in such lenses at night, and when worn continuously, a person may even forget that there are foreign objects in his eyes. They are also popular because they are inexpensive. Image clarity is maintained even at dusk. This is especially a big plus for motorists. In addition, monthly extended-wear lenses made from silicone hydrogel do not need to be disinfected and do not need to be stored in solutions. They are suitable for people working in hazardous industries or those who are constantly at the computer. But you don’t need to wear such lenses for more than a month. They, like other types of lenses, accumulate deposits.
Monthly lenses made from silicone hydrogel are more expensive. But they protect against ultraviolet radiation and allow oxygen to pass through better. You can use monthly lenses for both “minus” and “plus” and even for astigmatism. They are presented, like one-day ones, in a wide assortment. Available with an ultraviolet filter and in color. These lenses will save you money because they do not need to be changed daily and are highly hygienic.
Today, the use of contact lenses is a popular method of vision correction, worthy of competition with the use of glasses. Lenses are classified according to certain characteristics, including the time of their planned replacement (wearing mode): one-day, two-week, monthly, six-monthly, etc. There is a lot of debate about which lenses with what service life it is advisable to give preference to, and there is a lot of controversy, and for each type Lenses have their admirers. Let's try to figure out which of the two common types of lenses is better - daily or monthly.
Monthly lenses are reusable soft contact lenses that last 30 days. After this period of time, the lenses require replacement with new ones. As a rule, such eye devices are put on in the morning and taken off before going to bed, placing them in a container with a special storage solution. There are also extended-wear lenses that can be worn overnight without interruption. But it is worth considering that not all lenses and not all patients can be worn continuously for a month - in some cases it is recommended to take a break for one night after six days or another period.
They are made from materials that provide a smooth surface, a sufficient level of moisture, oxygen exchange, and also prevent rapid contamination of the lenses with protein deposits. Therefore, lenses with a one-month service reserve are convenient, comfortable for the eyes and do not require deep enzymatic cleaning. Monthly contact lenses are a popular, cost-effective option for those people with vision problems who use them regularly on a daily basis.
Daily lenses require replacement every 24 hours. They are sold in large packs of 30-90 pieces and are made from slightly different materials that are not particularly durable. At the same time, such devices cope perfectly with their functions. Unlike menstrual lenses, daily lenses are more flexible, soft and thin. In addition, they are characterized by an increased degree of oxygen permeability, which allows them to be used even with the most sensitive eyes. Other distinctive advantages of lenses with a one-day period of use are:
- Sterility
- when using such lenses, you put on a new, completely sterile pair every day, so the risk of infectious complications for the eyes is significantly reduced; - No need for special care
- daily lenses are discarded after their service life has expired and do not require the use of special cleaners, disinfectants, or storage solutions, which simplifies their use; - Elimination of the forced use of damaged lenses
- lens defects that can occur even after several days of wear are not always obvious, so sometimes patients use damaged devices that can imperceptibly injure the cornea, and when wearing daily lenses, this is excluded.
Of course, all these advantages are reflected in the cost of daily wear lenses. But still, it is not much higher than the price of monthly lenses, taking into account the fact that the latter require the purchase of additional care products.
Many experts agree that it is advisable to remove lenses at night, even daily ones. Otherwise, in the morning you can get not only such uncomfortable sensations as dry or sticky eyes, blurred vision, but also conjunctivitis and other diseases.
In the section Other about health and beauty , to the question I want lenses... The question is which is better: two-week, monthly or something else... =) asked by the author Violetta Maleeva the best answer is: Before you buy lenses, you need to be examined by an ophthalmologist. By the way, some opticians also have specialists and can select lenses for you on the spot. They will also tell you how many hours a day to wear and whether to take it off at night. The ophthalmologist you see will need to make sure that you can put in and take out your lenses yourself. To do this you will have to work out and show your skills. They will recommend a solution for your lenses. The ophthalmologist with whom I was examined told me that different lenses require different solutions, despite the fact that they are written “for all types.” Yes, there are people who cannot wear lenses. This is an individual intolerance. Allergy to the material from which the lenses are made. You can learn more about this from your ophthalmologist. The best lenses are daily ones, as you always wear fresh, clean lenses. Lenses worn for more than a month are no longer very beneficial for the eyes. No matter how you clean them, they still get dirty and that’s not good. Also, such lenses usually contain a lot of moisture, and this makes them dry out faster. This is such a paradox. I wear bi-weekly lenses. I'm happy with everything, but at the end of the term they become very dry. It's also a good idea to purchase moisturizing eye drops just in case. PS: if there is no need for vision correction, but you just want to change your eye color, etc., then it is better to wear lenses less often.
The answer is Yes...No...Maybe... Start with the simplest ones. Check it out. how you will feel. For many people, lenses are not suitable. I am among them: a constant feeling of sand in the eyes.
The answer from Єaust is according to medical indicators, the lenses are not harmless))) I’ve been wearing them for a long time, I’m constantly seeing an eye doctor, there are a lot of other indicators that need to be selected, I tend to prefer daily. It is necessary to consult with a (normal) doctor, because they have a size and can be averaged, this is one of the important indicators) ) When wearing lenses, the eye experiences oxygen starvation, this is harmful, so it is better to wear it as needed
Answer from Alen Gusarenko shorter is better for a month Johnson & Johnson…. super…. You don’t have to take pictures for a whole week... I recommend the source... own experience
Answer from Nat melek For me, it’s better than one-day wear, it’s more expensive of course, but you don’t have to worry about solutions, containers - put it on in the morning, throw it away in the evening, they are also more hygienic than all the others, I like 1 DAY ACUVUE TruEye. Well, the question of contraindications is a doctor decides, I know that there is an individual intolerance to contact lenses.
The answer from Olesya should be checked in optics!! ! and I know better than monthly lenses from my own experience! ! Well, or for testing, you can start with disposable ones!!
Answer from Kononov M. There are contraindications. and it is advisable to be examined by an ophthalmologist, because this is a serious matter, and not everyone in optics has the proper qualifications. and, of course, the shorter the life of the lens, the better (more hygienic). however, again, everything is individual.
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Hello! Here are more topics with the answers you need:
The best multifocal contact lenses
SoftLens Multi-Focal
Moderately soft hydrogel contact lenses are characterized by a balanced weight and rounded edges, due to which they are quickly put on and removed.
It is convenient to use optical products at any time, but before going to bed it is recommended to remove them and disinfect them using a solution specially designed for this purpose.
No less pleasing is the light blue tint, which not only makes the color of the pupils beautiful, but also allows you to quickly find the lenses in the container.
PureVision2 Multi-Focal
Soft multifocal contact lenses are made from hypoallergenic silicone hydrogel, making them completely invisible to the eyes. They are great for long term use.
The optical design gives the owner the opportunity to feel comfortable, and the eyes to quickly find the desired area and obtain optimal focusing. It is recommended to remove lenses before going to bed, and scheduled replacement should be done every 30 days.
By following these rules, wearing optical products will always be comfortable and profitable. In addition, they provide much better visual acuity than bifocal glasses.
3 Biofinity Multifocal
The silicone hydrogel option is suitable for eliminating any manifestations of presbyopia, regardless of the stage of its progression. These contact lenses are distinguished by their unique formula, due to which they retain moisture and allow air to pass through perfectly.
Users have never complained about the comfort of using optical products, so you can safely wear them for a week or a whole month without fear of deterioration.
Dailies Aqua Multifocal
Daily multifocal lenses from a popular brand have three optical ranges, between which there are smooth transitions. They provide comfort when wearing lenses, as well as clarity of vision, regardless of the distance to the object.
The optical products have a rounded profile, so there are no problems when putting them on and taking them off. Moreover, it is important to note that these lenses will be an excellent choice for people who simply do not have time to clean and disinfect them every day.
PureVision Multi-Focal
Some of the most affordable contact lenses are also high quality. And although they are a relatively new product on the optical products market, the product has already gained respect and popularity. They need to be replaced every 30 days.
When wearing lenses, a person can feel their own visual acuity at any distance - near, far and intermediate. In addition, the aspherical design is considered a big plus, which allows the owner to clearly see what is happening even in the dark or twilight.
Tips for choosing lenses
How to choose contact lenses? When choosing lenses for sensitive eyes, you should rely on the recommendations of an ophthalmologist. The contact lens manufacturer must also be taken into account.
When choosing lenses for sensitive eyes, you should not chase low cost. It is better to choose something more expensive, but of better quality.
Many manufacturers produce lenses for sensitive eyes. There are several of the most popular brands of such contact optics:
- Acuvue Oasis. These lenses are recognized as one of the best lenses for sensitive eyes. They are designed for daytime use, so they need to be removed at night. The wearing regime ranges from one week to half a month.
- Acuvue Advance. These lenses are designed for sensitive, dry eyes. Due to the fact that they are made of silicone hydrogel, the lenses in which are comfortable and comfortable for the eyes. Acuvue Advance lenses must be removed at night.
- Ciba 02 Optix. The lenses are produced by the well-known company Ciba Vision. Ciba 02 Optix contact lenses are suitable for eyes that experience dryness. Their use time is one week. But during this time, the lenses do not deteriorate their oxygen permeability and moisture content. You don't even have to take them off at night.
- Focus Air Optix Night & Day Aqua. These lenses are considered the most ideal for moisturizing. They are intended for long-term use (one month). During this entire time, you don’t have to take them off at all. Focus Air Optix Night & Day Aqua contact lenses do not cause discomfort.
Read more about Acuvue daily lenses here.
Acuvue Oasys - popular products
The best colored contact lenses
OKVision Fusion
Optical products with excellent color depth and brightness differ significantly from competitors precisely in these parameters. In their production, specialists used a unique technology, which involves applying the coloring matter in layers.
Due to this, the natural depth of the gaze is preserved. In addition, such lenses can even cover the dark shade of the pupils.
In general, they look natural, are not felt during use and have excellent oxygen permeability - absolutely all buyers praise this model for this.
ADRIA Glamorous
Korean contact lenses are available in a wide range of colors. Users like them for the visual increase in the size of their visual organs. At the same time, the products look quite natural.
Additionally, the lenses have interesting patterns that make the look more expressive and very unusual. They also perfectly protect against exposure to ultraviolet rays and correct farsightedness or nearsightedness.
No defects were identified in these optical products.
SofLens Natural Colors Bausch + Lomb
Colored contact lenses are intended for everyday wear. They have moderate moisture content and air permeability. This model is also made of hydrogel, and it looks quite natural on the eyes.
There are about a dozen different shades on sale, from which you can choose both those that will highlight your natural eye color and those that will completely change it. The cost of the model is also pleasantly surprising, since it is available to every buyer.
Air Optix (Alcon) Colors
American-made contact lenses are “breathable” and are made of silicone hydrogel. They are quite comfortable to wear; no irritation or redness has been observed as a result of long-term use.
People especially love the inner ring of pigment in them, which adds more depth to the look. In this case, the middle ring provides the main color, and the outer one is intended to emphasize expressiveness.
Other advantages of optical products: plasma surface treatment, the ability to correct farsightedness and myopia. However, the model has one drawback - it can only be worn during the daytime.
Ophthalmix Butterfly Three-tone
The option from a domestic manufacturer attracts buyers with its bright and truly exotic colors in the assortment. Such lenses, of course, do not look as natural as possible, but they can be difficult to notice.
They are sold cheaply, but have decent characteristics: high oxygen permeability, optimal moisture content, good optical power.
