How to choose the right glasses for vision

Any of the human senses is extremely important for his life and, therefore, requires careful personal care. One of the least stable is vision, since today a huge proportion of all people suffer from any kind of eye diseases that impair the quality of vision. In this regard, glasses with diopters, which are designed to reduce the consequences of the disease, have forced popularity.

However, to purchase such devices, it is not enough to choose the option you like in appearance and cost. Therefore, many are interested in how to choose glasses for vision and what you need to know for this. Each model has its own characteristics, which are important to pay attention to. If you neglect this need, you can buy glasses that not only do not alleviate the disease, but also cause additional harm to the user's body.

Thus, it is difficult to argue with the level of importance of the procedure for choosing a suitable model. If you are interested in how to choose the right glasses for vision, then a comprehensive answer to this question can be found in our article.

The mechanism of work and structure of glasses for vision

First of all, we propose to consider the principles by which glasses for vision work. If you are interested in how to choose glasses for women or men, then you should know the general structure of these devices for a clearer understanding of the issue. The models under consideration are based on diopters. In other words, optical lenses with the power of light refraction are used as glasses. Therefore, the user's eyes see the image changed by the lenses.

Before choosing glasses for sight for a man or a woman, it is imperative to be examined by an appropriate doctor and get all the necessary advice. It is recommended to go to the store for glasses only after this procedure. Otherwise, you risk buying the wrong model. Wearing such glasses increases the risk of headaches, eye discomfort, overwork, lowering the user's performance level, and the quality of vision itself will also deteriorate over time. Therefore, it is recommended to take the consultation with your doctor very seriously.

It is worth noting that it is worth consulting with an ophthalmologist even if you have already been wearing glasses for some time and decided to change them. The fact is that vision and its quality change over time. These changes may require the use of different lenses.

As for the technical device of the considered devices, it does not differ from conventional models. Optical lenses are fixed with a frame. Before choosing a frame, it must be borne in mind that this component is responsible not only for the appearance, but also for the quality of fixing the lenses in front of the eyes. In this regard, the frame should install the device on the head as securely and correctly as possible.

The main components of the frame are temples and bridge for the bridge of the nose.The temples are necessary to ensure the correct position of the device on the face, and the bridge serves several functions at once. This includes the correct fit of the frame to the head, the connection of the two skylights, and the correct distribution of the load on both sides.

Before choosing glasses for eyesight for a woman or a man, it is recommended to wear the most suitable models for a while. The fact is that when first put on, high definition lenses can cause visual discomfort due to high sharpness. Therefore, it is necessary to check them for their intended purpose. Stores provide this opportunity. If the model does not fit, then it can be easily changed to another one.

Types of eyeglasses

Today, there are 2 main categories of glasses for vision. They differ in the materials from which the lenses are made. These can be either standard models with mineral lenses or polycarbonate (plastic) options. We propose to consider each of them in more detail.

Models with plastic lenses

Recently, it is plastic diopters that have become more and more popular, since they are more modern and safe for humans. The main feature of such models is a high level of impact resistance. Thus, they are primarily recommended for athletes, children and adolescents, as well as car lovers. At the same time, the mass of polycarbonate glasses is about a third lower than ordinary ones. Therefore, even with prolonged continuous use, they do not cause discomfort on the bridge of the nose.

Since these are more modern models, they offer users a wider range of different designs, different numbers of coating layers, and so on. However, it is worth noting the main drawback of this category. Polycarbonate lenses are inferior to glass in optical quality. Moreover, this parameter plays a key role in choosing the right glasses. Therefore, this view is not suitable for everyone.

Pros:

• Polycarbonate does an excellent job of protecting the user from UV rays;
• High level of safety, since the glasses are shockproof and difficult to break;
• Optical lenses can be aspherical;
• Light weight. Comfortable to wear even for a long period.

Minuses:

• Absorb moisture;
• Quite expensive compared to standard models;
• Short service life;
• Plastic is easy to scratch;
• Optical properties are significantly inferior to mineral lenses.

Glass lens models

The next category of glasses includes classic glass models. Their manufacturers use in their factories certain types of glass with enhanced optical properties. These types of glasses have additional properties that are great for glasses. Over time, these lenses do not grow cloudy and it is difficult to scratch their surface. At the same time, the cost of such models, as well as their final price tag in the store, is lower than that of polycarbonate options.

The main disadvantage of the glass lens models is the low safety level as they are quite fragile. Therefore, these glasses are not recommended for children and athletes. If the glasses break on the face, it could cause serious eye injury.

Pros:

• Acceptable cost;
• The glass surface is protected from scratches;
• Good transparency. At the same time, they do not grow cloudy over time.

Minuses:

• Low level of security;
• The mass is higher than that of plastic. With prolonged wear, the bridge of the nose gets tired;
• Quite fragile;
• Some frames do not allow the use of glass lenses. We are talking about rimless, semi-rim and similar options.

How to choose the shape of glasses

Do not forget that eyeglasses do more than just a practical task. They are fixed in the most conspicuous place of the person, and therefore they are part of the person's image and should be perfectly combined with his face shape.Therefore, when choosing a model suitable for yourself, it is recommended to take into account not only the optical parameters, but also the structure of your face to select the correct lens shape.

For each type of face, you can choose the most suitable lens shape. Today, there are 5 main types, for each of which you can choose a suitable shape of glasses. It is recommended to adhere to the following tips:

• Oval face type. The most common human face shape. Almost all types of frames are suitable for her. However, it is not recommended to buy too massive models;
• Elongated face type. In this case, on the contrary, it is not recommended to buy glasses that are too small. Bulky models with large lenses and frames are perfectly combined with elongated faces;
• Square face type. It is recommended to buy more rounded and oval-shaped frames;
• Heart-shaped face type. As with the oval type, the heart-shaped is quite versatile and will fit most frames. However, you should not pay attention to models that have unnecessary decorative elements;
• Round face type. It is recommended to purchase square glasses. In this case, you should choose more saturated and strict frame colors.

Options for choosing glasses for vision

We propose to analyze in detail the most important parameters that you should pay attention to when choosing glasses for vision.

General recommendations

First of all, we will consider general recommendations. They should be followed in the first place:

• If you choose a model with a too low fit, then the nose will seem too short;
• The lower part of the frame should not touch the face other than the bridge of the nose. And the distance between the frame and the eyebrows should not be too great;
• You need to choose a frame that best suits your face size;
• The side edges of the model should be in line with the user's face;
• If you use glasses for hyperopia, then it should be borne in mind that on the back side for other people, the eyes visually increase. In this case, wrinkles stand out. Therefore, it is recommended to buy low-tinted aspherical lenses.

Lens type and number of optical zones

Today there are 7 main types of lenses, which have their own properties and the number of optical zones:

1. Single vision spherical. This is a classic option that is inherent in most modern models;
2. Lenticular spherical. These models have reduced weight and thickness. An excellent option for large positive diopters;
3. Aspherical Such optics have their own geometric features. The lens is thinner and more attractive. In this case, the clarity of the image is not distorted;
4. Monofocal. They differ in the presence of one optical zone. Thus, the entire surface of the lens has the same diopter value;
5. Bifocal. Great for people who have to use two pairs of glasses (one for hyperopia, the other for nearsightedness). Bifocal lenses are divided into 2 parts with a distinct stripe. The upper part is designed for hyperopia, and the lower, respectively, for short-sightedness.
6. Progressive. This is an improved bifocal lens shape that does not have a distinct separation band. As for the appearance, such glasses practically do not differ from single-vision glasses.
7. Trifocal. They are similar to bifocal shapes, but here a third level is added for medium distances. It is located between the top and bottom. It should be noted that such glasses cannot be used outdoors or while driving. They are only suitable for home or office use.

Frame material

Typically, eyeglass frames are made of metallic materials. However, you can also find plastic models, as well as options with a combination of these options. The metal frame is more reliable and shockproof. Moreover, she has a strict style and does not particularly stand out on her face.In most cases, manufacturers use titanium, aluminum, stainless steel, and copper and nickel alloys. If you need a hypoallergenic model, it is recommended to buy glasses made of titanium or stainless steel.

As for the plastic models, they have a small mass and stand out more on a person's face. However, their strength is significantly inferior to the metal frame. It is also worth noting that over time, the color of the plastic begins to fade due to ultraviolet rays.

Combined models use the best aspects of both materials.

Light transmission coefficient

According to the coefficient of light transmission, all lenses are divided into 3 categories:

• Classic lenses with maximum transparency. Let in all the light;
• Photochromic (chameleons). These glasses automatically change the transparency of the lens depending on the amount of sunlight. The main advantage of such models is their versatility, since they independently adapt to the environment, increasing user comfort. At the same time, the darkening process is performed as smoothly and without jerks as possible, which does not bring additional harm to vision.
• Colored. These lenses are permanently stained by the manufacturer during manufacture. They can have any shade and are used not only as eye glasses, but also as sunglasses. It is worth noting that wearing such glasses on a permanent basis is not recommended, since over time they begin to overstrain the eyes. The models under consideration are recommended for motorists, sportsmen, hunters, fishermen and people with similar activities.

Special lens top coat

Some eyeglasses have an extra top coat to provide some kind of protective function. The most common types of coverage are:

• Anti-reflective coating. As the name implies, it is intended to protect the user from light glare when reflected from a surface;
• Reinforcing coating. Increases the overall lifespan of the glasses as well as impact resistance;
• Water and dirt-repellent coating. Prevents drops of water, dust, dirt and other debris from sticking to the lens surface;
• Multifunctional coating. It is carried out in several layers and contains the functions of all other coatings.