Shelf life of colored lenses. Daily colored lenses. Colored lenses for eyes

Colored lenses became known to humanity 30 years ago. Thanks to their discovery, many myths have arisen regarding the dangers of wearing such products. Despite this, the new generation is still interested in multi-colored products and transforms their appearance with them, changing the shade of their eyes. This solution looks unique and catchy. But we must remember that a person who constantly uses the device not only changes his appearance, but also harms the retina. Let's consider the existing types of this invention, storage conditions, how unsafe it is and what is the shelf life of colored lenses.

Diopter lenses

Lenses are ordinary hemispherical products. They have an external pattern. Most often it resembles a natural iris. Lenses can either change eye color or enhance the existing shade. Previously, optics were produced only for people with vision problems. At that time, lenses could not change shade. Their task was to enhance the light color of the iris.

Over time, the range began to expand. Colored lenses for eyes with diopters appeared. That is, products that correct vision and change the shade of the iris. They are used not only for convenience and avoiding glasses, but also to change your appearance.

Before purchasing, you need to consult a doctor who will assess the health of the eyes and the body as a whole, and will be able to determine which lenses are suitable, based on the age and characteristics of the patient. He will also advise on expiration date, storage and use rules.

Advantages and disadvantages

Lenses are able to neutralize the sun's rays, as they contain substances that quickly absorb ultraviolet radiation. This feature is inherent in the dye. Buyers are interested in the question: “Are colored lenses harmful?” It is the dye that can cause harm to the eyes. Because of this, you cannot wear lenses for more than 8 hours. The fact is that the dye is not applied to the place where the pupil is located. Due to this, when used, if it goes beyond the unpainted area, the person stops seeing 100%.

Wearing expired lenses

When using contact lenses, it is necessary to comply with the expiration dates, operation, replacement schedule.

At the end of the expiration date indicated by the manufacturer on the packaging, the sterility and tightness of the products are lost. Their properties change, air permeability and moisture retention decrease, and the “film” deforms. Such CLs are unsuitable for use.

They do not perform their functions - changing eye color, reducing or eliminating defects, correcting vision and other pathologies.

It is much more dangerous to wear expired lenses that have expired. After opening and use, plaque forms on the “films” in the form of protein and fat deposits, and bacteria, viruses, and microorganisms settle.

Their vital activity leads to the following consequences and risks to human health:

• conjunctivitis of a bacterial or viral nature, blepharitis, ulcerative lesions of the cornea, keratitis;
• visual impairment;
• the occurrence of allergic manifestations, itching and dryness, discomfort, increased lacrimation, swelling of the cornea;
• injury to the ocular mucosa due to impaired lens properties;
• sensation of a foreign body in the eye, sand;
• soreness;
• redness of the sclera, worsening dry eye syndrome;
• due to impaired air permeability, the occurrence of corneal hypoxia, disruption of metabolic processes and blood circulation;
• hemorrhage;
• lens rejection, inability to further use a specific method of vision correction;
• allergy to the material used in the manufacture of CL.

Wearing expired lenses in different cases leads to mild, moderate or severe consequences. With single use, only redness and itching are possible. If the service life is regularly violated, a person risks losing vision and aggravating existing diagnoses.

Best before date

How long optics are worn directly depends on the type. For example, there are one-day colored lenses (we’ll talk about them in the article), which are used only for a day, after which they are thrown away. This type is the safest and most optimal for humans, the only disadvantage is that it is too expensive.

Long-term use lenses are available. Their shelf life ranges from 7 to 30 days. They are used by those people who do not have the opportunity to change lenses every day. This product will come in handy on a hike. Optics with diopters are used for about a year, depending on the model.

If worn inconsistently, will the shelf life increase?

Of course, in this case, the service life of the devices increases. After all, their damage occurs mainly during the process of putting on/taking off - the edges become jagged, the surface is scratched, etc. In general, lenses need to be properly cared for: avoid contact with hand cream, other cosmetics, deodorants, perfumes, cigarettes or any other smoke ( We have already discussed this last point in more detail in the article on smoking and contact lenses).

also undesirable to wear equipment where metal, stone, wood are processed, welding work is carried out , as well as procedures involving caustic and toxic substances . If you do not follow all these rules, then discomfort when wearing and, of course, the shelf life will not change for the better.

Video - Rules for wearing contact lenses

It also has its own classification, according to which the following options are distinguished:

• day models (marked DW) are worn during the day, always removed at night;
• with flexible wearing mode (FW), you can sometimes sleep in the devices, but no longer than three nights in a row;
• the extended mode involves continuous wearing for a week, after which it is necessary to take a short break;
• Continuous wearing mode allows you to wear lenses for 30 days in a row.

How long wear can last depends on a number of factors. Let's look at them in more detail.

Types of lenses

Colored lenses help to add something new to the usual look of any person. They are able to hide flaws and highlight advantages. If you choose the appropriate model, it can correct your vision. One-day colored lenses have become very popular. They differ from each other in purpose:

• Indicative. These lenses have a light shade of green or blue. This solution allows you to easily find the optics in the shipping container. Their peculiarity is that they do not change the shade of their eyes, although they are called colored.
• Tinted. These are the ones you should use if you want to emphasize your natural iris color. When it is a dark shade, the lenses will enhance it, since the color of them themselves is dim.
• Cosmetic. They completely change eye color. The assortment includes a large number of different shades.
• Carnival. Such lenses are distinguished by a pattern applied to the surface of the optics.

In addition to the listed types, colored products can be two- and three-tone. The latter are made in such a way that they have a black rim around the edges and inclusions in the center. This allows you to achieve a radiant effect.

Advantages of daily lenses

Daily disposable lenses do not cause any harm when worn. Due to the short period of their use, various deposits do not accumulate on the eye, and the paint does not have time to begin to affect the retina. Additional benefits include the ability to change the look and color of your eyes every day. You need to understand that such luxury is not a cheap option. When using them, there is no dryness or discomfort. Daily colored lenses for eyes can be either cosmetic or vision correcting. They can also be used by people who are particularly sensitive to such products.

Differences for different types of CL

There are many differences between soft and hard lenses. This also applies to SG. It depends on the material from which the optics are made, as well as on the packaging in which the CL is stored before it is used.

Soft

CLs are made from hydrogel, silicone hydrogel polymers and need to be stored in a special solution. Before using them, the container must be sealed to maintain the sterility of the contents of the blister.

On average, storage time is about four years . However, depending on the manufacturer, it may differ. Therefore, you should always be careful when purchasing a contact vision correction item.

Sometimes manufacturers take into account the inattention of buyers and indicate this period is shorter than it actually is, which allows the lenses to be stored for some more time. However, this does not always happen and it is still better not to experiment.

Hard

Such contact correction products are made from silicone-based polymers, which provide high gas permeability. Each CL is made individually and is selected specifically for the eyes of a particular patient. Such CLs are delivered dry and there is no risk of breaking the seal of their packaging, so they are indefinite .

ARTICLES ON THE TOPIC:

• How to change eye color
• Lenses for changing eye color
• Lenses that change eye color

Peculiarities

Doctors do not recommend using lenses for a maximum period (24 hours). The optimal wearing time is a period not exceeding 10 hours, even if the shelf life of colored lenses is much longer. What is this connected with? Due to the fact that colored lenses have virtually no oxygen permeability, unpleasant symptoms can begin quite quickly. In the dark and in rooms with insufficient lighting, a person wearing daily lenses will see everything blurry.

You can perform work that requires maximum visual concentration only by first removing the products. Driving in them is also dangerous. They cannot be worn if diseases such as strabismus, glaucoma, blepharitis, and so on are present.

Specifics of wearing

There are lenses with different service life. One-day ones, from a medical point of view, are considered the most successful and optimal. This type of optics does the least harm. A new pair of products for every day is a safe method of changing your natural eye color. But even with this advantage, some nuances must be taken into account.

If discomfort of any kind occurs, the lenses should be removed immediately. When your eyes dry out, you can use special drops. You need to choose them together with your doctor, and not on your own. In order to monitor the condition of your vision, you should regularly visit an ophthalmologist after wearing optics. If you ignore the expiration date of colored lenses, various harmful substances may begin to accumulate and hypoxia may appear. If your eyes constantly experience any discomfort, you need to pay attention to the curvature and diameter of the product - they are chosen incorrectly.

Every year there are more and more people using contact lenses. The lenses are easy to use, they minimize the risk of eye injury, they are easy to use

store, use and take with you. In this regard, there is a need to know not only how to choose the right lenses in order to maintain eye health, but also how to monitor the shelf life of the product and replace it with a new one in a timely manner. We will talk about the useful life of contact lenses and the unsafety of using an expired product in this article.

Unfortunately, many people believe that lenses do not have an expiration date, and the product can serve us indefinitely, exactly until we ourselves see changes in vision when wearing them. Some people prefer to change lenses only when they no longer notice any visible effect from their use. But relying only on your own feelings is wrong. Any lenses have their own expiration date, after which their use becomes unsafe for the eyes. The standard service life of lenses is four years from the date of production, if the packaging is unopened. Until the expiration date, the manufacturer guarantees the safety of the product. The expiration date in the “year/month” format is printed on the foil cover of the product. It is also worth mentioning here that as soon as you open the package with a sterile saline solution, it ceases to be such, and accordingly, you cannot put the lenses back and store them again.

In addition to the expiration date, the following characteristics are indicated on the foil cover of the product:

• lens diameter;
• base curvature;
• optical power of the lens;
• the material from which the product is made;
• manufacturer's name and lens brand.

To avoid unpleasant situations when purchasing lenses, be sure to pay attention to the expiration date of the product. Then, after opening the manufacturer's packaging, you can store the lenses in a special container, adding saline solution.

Using lenses for a longer period than specified by the manufacturer may result in the development of various eye diseases. Microbes and bacteria that appear in expired material directly interact with the mucous membrane of the eye, which causes irritation, redness, tearing and burning. If you do not pay attention to these unpleasant symptoms in time, irritation develops into inflammation of the eyes, discharge of pus and the appearance of swelling. To prevent this from happening, we advise you to take care of yourself, monitor the expiration dates of products and related products, and systematically seek advice from a specialist.

How to choose the right lenses?

Before purchasing, you should immediately look at the picture. It will help determine the lens size. This question is quite important, since not all eyes have standard sizes. If you are in doubt about what color to choose, then you should choose a shade that allows you to deepen the natural tone. When the choice falls on daily lenses, and the future owner has light eyes, preference should be given to tinted options. Products that imitate the pattern of the iris will look beautiful. When choosing colored lenses for your eyes, you need to think about and pay attention to diameter, material, curvature, thickness, permeability, water content, optical power. If you have doubts about the second one, then it is better to prefer hydrogel. The fact is that it is soft and contains little water. However, this material is not suitable if a person has severe vision problems.

Lens care

Due to the short lifespan of daily lenses, they are easy to care for. The wearing mode is also standard. Features of lens care and their observance allow you to put on the products with minimal effort and without harm. This must be done in such a way as not to deform the optics. If scratches appear on the surface, then there is no talk of using them. Such lenses will only bring discomfort. Don't forget about hygiene products. Before putting on or taking off your lenses, wash your hands and dry them. These precautions will help prevent infections easily. Current question: “How to store colored lenses?” If the optics have been in a dusty and dirty room, they should be thrown away immediately. Wearing is not recommended. To avoid even the slightest discomfort and dryness, you need to periodically use eye drops.

Types of soft contact lenses

Visual impairments are different, and accordingly, they are corrected differently. The shape of the optical surface depends on the type of pathology.

Contact lenses also differ in wearing mode:

• one-day ones - remove them in the evening and throw them away;
• prolonged (weekly, two-week, monthly) - wear it during the day, put it in the solution at night, and throw it away when the period expires;
• continuous - manufacturers offer lenses that can be worn from 1 week to a month.

For beginners, it is better to start with a minimum amount of time of use. The eyes need to adapt to the presence of foreign bodies. Over time, you can try other options for ophthalmic products.

Use at night

Doctors have long come to the conclusion that colored lenses without diopters will be useful only during the daytime. At night they cause harm. However, there are cases when a person needs to use the product after sunset. For example, older adults and children who have vision problems sometimes need to wear special lenses to put on and take off clothes. Sometimes people work at night. Also, if a person is on a hike or in nature, he does not always have the opportunity to change lenses. In order not to harm yourself or cause discomfort, it is best to consult an ophthalmologist.

Terms of wearing lenses

Contact lenses are an excellent solution for people with vision problems. They are practical and convenient compared to glasses, which can fog up and collect drops on themselves during rain or snow. However, it is important to remember that the lenses are in direct contact with the eyes, and therefore require careful care and compliance with a number of rules.

The first and most important rule is the timing of wearing and replacement. Let's look at this important question - how long do you wear contact lenses? This period mainly depends on the type of lenses:

• Daytime lenses - ophthalmologists recommend wearing these models no more than 8-10 hours a day, as after them discomfort and irritation may begin due to insufficient oxygen supply to the eye.
• Extended wear lenses – these models, due to the peculiarities of their structure, can be worn for up to a week without removing them even at night.
• Continuous wear - such lenses are especially good at transmitting oxygen to the eyeball, and therefore can be worn for up to thirty days in a row.

It is important to remember that wearing lenses during the day and removing them at night is still safer for the eyes, and therefore, if you want to purchase lenses for extended or continuous wear, be sure to consult with a specialist before doing so. Before purchasing them, you need to make sure that you have no contraindications that could only worsen under the influence of continuous wearing of contact lenses.

You should also remember that from time to time the lenses need to be replaced with others. How long can you wear contact lenses? The answer to this question depends on what kind of lenses you wear.

• One-day lenses - as the name suggests, these lenses can be worn for no more than a day, after which they should be thrown away. The main advantage of these models is that they do not require any maintenance or the purchase of a special solution, since the next day you will be wearing a new pair.
• Planned replacement - today lenses are produced for a wide range of wearing periods - from two weeks to six months. When purchasing models for a long period of wear, it is especially important not to forget about replacement periods. These lenses are removed at night (except for continuous or extended wear models) and cleaned with a special solution in the container.

Many people face the problem of getting used to the routine of wearing and replacing contact lenses. To not forget about such an important thing, you can use online reminders or notes. It also works well to maintain a special discipline when lenses are purchased on the same day of the week and at the same time.

Take care of your eyes and properly care for your lenses!

Model Acuvue Moist

This optics is one-day use. It can be used by those who have reduced vision or increased sensitivity. Due to the fact that these colored lenses without prescriptions are well moisturized, the problem of dryness should not be present.

In order to protect the owner's eyes, the manufacturer installed an ultraviolet filter. However, due to the fact that the lenses are not able to cover the entire eye (this is their feature), in strong sunlight you need to use special protective glasses. The products are also suitable for those who have allergies.

Application

In order for your eyes to quickly get used to the lenses, you need to start using them for 1 hour a day, over time increasing the period of use by at least half an hour. If discomfort begins to appear earlier, you should remove them. The fact is that each person has his own perception of such a product, so all deadlines are individual. Cheap eye lenses (colored) are in great demand, but it is better not to stop your choice on them.

How can you tell if your lenses have been worn for too long? If, after removing them, a gray haze appears that does not go away for 30 minutes, then the duration of use should be reduced. If after 5 hours there are no sensations or discomfort, then everything is fine. If a person has conjunctivitis or another infection, they should avoid using lenses.

Care and use of Korean lenses

Korean lenses require special care. They also need to be used correctly in order to avoid (or prevent) various problems:

• It is forbidden to wear daily lenses a second time; it can cause an infection.
• If Korean lenses (colored) are used after their expiration date, they can stretch the retina and damage vision.
• Wearing magnifying optics for more than 8 hours a day is prohibited. The eye quickly gets tired of the foreign substance, oxygen does not reach it, so the retina needs to rest from the product more often.
• Sleeping in lenses is strictly prohibited. Ideally, when you get home, it is best to remove them and place them in a special container with liquid.
• If the whites of the eyes are red, there is itching or discomfort, then this model is unsuccessful. You need to change your lenses. Doctors advise contacting an ophthalmologist, who can accurately suggest which option should be used.

Features of the lenses we offer

We guarantee the safety and comfort of our products. When choosing products, you should take into account the instructions for use. The main qualitative characteristics of extended and long-term wear lenses that we sell are:

• Air Optix Night & Day Aqua can be used for a month. The material for the manufacture of products is silicone hydrogel material, which increases oxygen permeability to the cornea. This stabilizes the clarity of vision and the comfort of using the products;
• Biofinity also retains its quality properties for a month. When using this model continuously, you can wear it for 7 days. The manufacturing material also allows oxygen to pass well to the eye and saturates it with a sufficient amount of moisture;
• Air Optix Aqua is suitable for beginners using lenses. You can wear them without taking them off for a week, after which you can change them to a new model. Due to increased oxygen permeability and saturation of the eyes with moisture, you can feel comfortable in them day and night;
• Air Optix Plus HydraGlyde is new to our store for extended use (up to 6 days). The latest manufacturing technology provides an increased level of eye protection from cosmetic deposits;
• Pure Vision 2 HD are long-acting optical products; they can be worn without taking them off for more than 7 days, and if removed at night - up to 30 days. The thinnest protective layer ensures unhindered access to oxygen and moisture from the first seconds of wearing;
• Acuvue Oasys is an excellent choice for people who frequently work at a computer. When worn continuously, they retain their quality properties for up to 14 days.

Today, lenses are an excellent alternative to wearing glasses. Since their quality characteristics not only improve visual acuity, but also perform a cosmetic function, more and more people are inclined to purchase them. Once you get rid of glasses, you will be able to freely engage in sports, your favorite hobbies, and work at the computer. By contacting us, you get access to a wide range of quality products from trusted manufacturers. Do not put off your purchase until tomorrow, we are waiting for your call right now and you will receive a quality certified product.

Results

With daily colored lenses, you can change your eye color every day or enhance the radiance of your shade. This product will help change the iris beyond recognition; there is an option to use a non-natural tone. Optics can also help change the shape of a person's pupil. Everyone is allowed to use daily products, even those with allergies. Before asking the question “Which colored lenses are best?”, you need to go to an ophthalmologist, conduct tests and only after consultation visit the store. If you choose on your own (especially for the first time), you may end up with the wrong optics; it will not only constantly cause discomfort, but will also damage your vision.