Any of a person’s sense organs is extremely important for his life and, therefore, requires careful self-care. One of the least stable is vision, since today a huge proportion of all people suffer from some kind of eye diseases that worsen the quality of vision. In this regard, glasses with diopters, which are designed to reduce the consequences of the disease, are forced to become popular.
However, to purchase such devices, it is not enough to choose the option you like in terms of 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 that are important to pay attention to. If you neglect this need, you can purchase 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 selecting 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.
Mechanism of operation and structure of vision glasses
First of all, we propose to consider the principles by which vision glasses work. If you are interested in how to choose vision glasses for women or men, then it is worth knowing 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 that have the power of refraction of light are used as glasses. Therefore, the user's eyes see an image modified by the lenses.
Before choosing glasses for vision for a man or woman, be sure to undergo an examination with an appropriate doctor and receive all the necessary consultations. It is recommended to go to the store for glasses only after this procedure. Otherwise, you risk buying the wrong model. If you wear such glasses, then the risk of headaches, eye discomfort, fatigue, decreased level of user performance increases, and the quality of vision itself will also deteriorate over time. Therefore, it is recommended that you take your consultation with your doctor seriously.
It is worth noting that you should consult an ophthalmologist even if you have been wearing glasses for some time and decide to change them. The fact is that over time, vision and its quality changes. These changes may require the use of different lenses.
As for the technical structure of the devices in question, it does not differ from conventional models. Optical lenses are fixed using a frame. Before choosing a frame, it is necessary to take into account that this component is responsible not only for the appearance, but also for the quality of fixation of the lenses in front of the eyes. In this regard, the frame must install the device on the head as securely and correctly as possible.
The main components of the frame are the temples and the 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 performs several functions at once. This includes the desired level of fit of the frame to the head, the connection of two light openings, as well as the correct distribution of the load on both sides.
Before choosing glasses for a woman or a man, it is recommended to wear the most suitable models for some time. The fact is that when you first put on high-definition lenses, they can cause visual discomfort due to their 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.
Types of vision glasses
Today, there are 2 main categories of vision glasses. 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, plastic diopters have become increasingly popular, since they are more modern and safer for humans. The main feature of such models is their high level of impact resistance. Thus, they are primarily recommended for athletes, children and teenagers, as well as car enthusiasts. At the same time, the weight of polycarbonate glasses is about a third lower than regular 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 design options, 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 lenses in terms of optical quality. Moreover, this parameter plays a key role in choosing the right glasses. Therefore, this type is not suitable for everyone.
Pros:
- Polycarbonate does an excellent job of protecting the user from ultraviolet rays;
- High level of safety, since the glasses are impact-resistant and difficult to break;
- Optical lenses can be aspherical in shape;
- Small mass. Comfortable to wear even for long periods.
Minuses:
- Absorb moisture;
- Quite expensive, relative to standard models;
- Short service life;
- Plastic is easy to scratch;
- The optical properties are significantly inferior to mineral lenses.
Models with glass lenses
The next category of glasses includes classic glass models. Their manufacturers use certain types of glass at their enterprises that have enhanced optical properties. These types of glass have additional properties that are great for glasses. Over time, such lenses do not become cloudy and their surface is difficult to scratch. 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 models with glass lenses is the low level of safety, since they are quite fragile. Therefore, such glasses are not recommended for children and athletes. If glasses break on your face, it can cause serious eye injury.
Pros:
- Reasonable cost;
- The surface of the glass is protected from scratches;
- Good transparency. At the same time, they do not become cloudy over time.
Minuses:
- Low level of security;
- The weight is higher than that of plastic ones. When worn for a long time, the bridge of the nose becomes tired;
- Quite fragile;
- Some frames do not allow the use of glass lenses. We are talking about rimless, semi-rimless and similar options.
Glasses prescription
So, the vision test has been carried out, the diagnostic results have been received. The doctor needs to fill out a prescription for glasses. The recipe must reflect the following parameters:
- optical power of cylindrical or spherical lenses;
- interpupillary distance;
- the reason for selecting glasses.
The patient just has to go to a specialized optical salon and order glasses, which will be made to order (according to the prescription!).
This is what a prescription for glasses looks like:
Of course, you can choose ready-made glasses, but this option is recommended for patients who have minor vision problems.
How to choose a glasses shape
Do not forget that vision glasses perform not only a practical task. They are fixed in the most visible place of a person, and therefore are part of the person’s image and should fit perfectly with his face shape. Therefore, when choosing a model that is 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 the appropriate form 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 it. 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 go well with elongated faces;
- Square face type. It is recommended to buy more rounded and oval frame shapes;
- Heart-shaped face type. As with the oval style, the heart style 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.
Determination of interpupillary distance
After the selection of optical lenses is completed, the doctor must measure the interpupillary distance. He does this using a pupillometer or a classic ruler.
The measurement procedure is performed to ensure correct alignment of the lenses in the frame. This will help avoid deterioration in overall well-being due to additional visual stress. The following indicator is considered optimal for glasses: 2 mm higher at distance than near.
Do not forget to inform your doctor about the specific purposes for which you need glasses: working at a computer monitor, reading books, or driving a personal vehicle. It is very important! The doctor will take this information into account when writing a prescription for glasses.
Options for choosing vision glasses
We offer a detailed analysis of the most important parameters that you should pay attention to when choosing vision glasses.
General recommendations
First of all, let's look at the general recommendations. These should be followed first:
- If you choose a model with a too low rise, the nose will appear too short;
- The bottom 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 large;
- You need to choose the 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 farsightedness, then it is worth considering that on the reverse side, for other people, the eyes are visually enlarged. In this case, wrinkles stand out. Therefore, it is recommended to buy aspherical lenses with a low level of tint.
Lens type and number of optical zones
Today there are 7 main types of lenses, which have their own properties and number of optical zones:
- Single vision spherical. This is a classic option that is inherent in most modern models;
- Lenticular spherical. Such models have reduced weight and thickness. An excellent option for large positive diopters;
- Aspherical Such optics have their own geometric features. The lens turns out to be thinner and more attractive. At the same time, the clarity of the image is not distorted;
- Monofocal. They differ in the presence of one optical zone. Thus, the entire surface of the lens has the same diopter;
- Bifocal. Great for people who need to use two pairs of glasses (one for farsightedness, one for nearsightedness). Bifocal lenses are divided into 2 parts using a distinct stripe. The upper part is intended for farsightedness, and the lower part, respectively, for nearsightedness.
- Progressive. This is an advanced form of bifocal lens that does not have a distinct separation band. As for appearance, such glasses are practically no different from single-vision glasses.
- Trifocal. They are similar to bifocal shapes, but here a third level is added for medium distances. It is located between the upper and lower. It is worth noting that such glasses cannot be used on the street or while driving. They are only suitable for home or office use.
Frame material
Typically, eyeglass frames are made of metal 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 impact resistant. At the same time, she has a strict style and does not particularly stand out on her face. In most cases, manufacturers use titanium, aluminum, stainless steel, as well as an alloy of copper and nickel. If you need a hypoallergenic model, it is recommended to buy glasses made of titanium or stainless steel.
As for plastic models, they have a small mass and stand out more strongly on a person’s face. However, their strength is significantly inferior to a 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 transmittance
Based on light transmittance, all lenses are divided into 3 categories:
- Classic lenses with maximum transparency. Let all the light through;
- 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 cause additional harm to vision.
- Colored. These lenses are permanently colored by the manufacturer during manufacturing. They can have any shade and are used not only as vision glasses, but also as sunglasses. It is worth noting that wearing such glasses on a regular basis is not recommended, since over time they begin to overstrain the eyes. The models under consideration are recommended for motorists, athletes, hunters, fishermen and people with similar types of activities.
Special top lens coating
Some vision glasses have an additional top coating that performs some kind of protective function. The most common types of coating are:
- Anti-glare coating. As the name implies, it is intended to protect the user from glare of light when reflected from a surface;
- Reinforcing coating. Increases the overall service life of glasses, as well as impact resistance;
- Water and dirt repellent coating. Prevents drops of water, dust, dirt and other debris from sticking to the surface of the lenses;
- Multifunctional coating. It is made in several layers and contains the functions of all other coatings.
[Total: 50 Average: 5/5]
