Polarized Glasses: Advantages and Disadvantages - Use in Pakistan

Polarized Sunglasses have become very fashionable in recent times. If you used to use them just to practice some sports, today it is common to use them in much more everyday situations. For this reason, we will explain the advantages and disadvantages of this type of accessories.

Protecting the eyes from sunlight is convenient to gain in visual and fundamental comfort to avoid suffering eye damage caused by constant exposure to solar radiation. Without a doubt, the best way to protect ourselves is by using good quality sunglasses that have the right filters for the most harmful UV radiation and polarized filters to avoid a rather annoying type of light.

Polarized Sunglasses

In a previous article, we made a series of recommendations to protect the eyes from the sun. In summary, ultraviolet rays are the cause of the damage to the eyes, so it is essential to create an adequate barrier (in this case by way of glasses) between sunlight and vision.

At the level of visual comfort, Polarized Sunglasses in Pakistan have become fashionable in recent years. Using this type of accessories has some advantages, but it is also necessary to know the small inconveniences of Polarized Glasses lenses before deciding to use them.

The Use of Quality Polarized Sunglasses Protects Eyesight and Improves Comfort

How Do Polarized Lenses Work?

The sunlight we receive vibrates in all directions, however, when it bounces on a horizontal surface, the light is partially polarized so that this horizontal component of the light is enhanced until it becomes a bright and annoying light: a reflection.

Polarized sunglasses have the characteristic of filtering the light that the lens receives from a specific direction. The most common is that the lenses are polarized vertically and thereby blocking this light that strikes horizontally. For example, when the sun reflects with a horizontal surface such as the sea, that characteristic glare that causes the king star in our eyes is filtered.

The polarizing filter of the lens is achieved by adding a thin sheet to the glass so the polarized glasses can be neutral or graduated for those who need them.

Advantages of Polarized Glasses

Polarized sunglasses are ideal for very specific situations in which the sun bounces against horizontal surfaces. Therefore, to practice certain sports or even to drive is usually a very successful option. In addition, by eliminating the reflection produced by the sun on surfaces such as water, they allow our view to go much further if we look towards the bottom of the sea or a river. For this reason, they are usually ideal for activities such as fishing, although, it should be borne in mind that polarized lenses are totally prohibited in competition because of the clear advantage they give to those who wear them by allowing them to see the fish more clearly.

To ski or do all kinds of water sports on days of luminosity and sun this type of protection, which performs polarized lenses, is the best alternative. Also, keep in mind that it is possible to choose to apply graduation to sunglasses.

Polarized Filters

In the technology that is applied to 3D cinema polarized lenses are used so that the viewer can perceive this effect. Of course, these glasses do not offer any type of sun protection. The operation of polarized lenses to watch 3D movies is as follows: polarized sheets are installed that are placed in different directions, so that the light that comes to us from the screen is polarized vertically or horizontally, depending on the characteristics of the picture.

Another advantage of polarized sunglasses is that in low light or shadow situations, the lenses do not get so dark and it is possible to achieve a much more pleasant view in this type of condition.

At present, polarized filters can be obtained from different degrees of protection and, in addition, it is possible to darken the crystals to a greater or lesser degree so that the person obtains the visual comfort he needs.

7 Characteristics of Polarized Sunglasses

1. They can be combined with visible and UV light filters so that they provide complete protection.
2. They provide a vision without reflections. At least those of horizontal light that is the most frequent.
3. Greater sharpness and better contrast.
4. Perception of more natural colors.
5. Reduce eyestrain.
6. Highly recommended for people with high sensitivity to light or photophobia.
7. The polarizing filter can be applied to graduated and even progressive lenses.

Inconvenient to Consider

There are not many disadvantages to polarized sunglasses. One of the most common disadvantages and that almost all users of these lenses notice are that when looking at LCD screens the images usually arrive in a distorted and dark way. This happens when, for example, we try to see an image or read a text on the mobile phone screen.

Another of the disadvantages of this type of polarized crystals is that they do not offer protection for any glare, so if we bow our heads, horizontal light reflections are likely to come to us so that the vision does not become optimal.

Limitations of Polarized Glasses

• The polarized version of certain glasses is not always possible. There are limitations on some types of lens and graduation.
• It should be borne in mind that polarized glasses avoid horizontal reflections so that other types of vertical reflections, much less frequent, can continue to dazzle (the reflection in the glass of a building).
• Most likely we will not see LCD screens (computer, tablet or mobile) well because this type of screen uses polarized light to form the images. We will see the screen turned off and the colors altered.
• Certain reflections can provide useful information. In the case of skiers, they can be used to detect ice sheets in the snow that generate a characteristic reflex.

How to Distinguish Polarized Lenses

Generally, polarized glasses include a badge printed on the inside of one of their [Polarized] pins and the lenses themselves also have a print [P] on their inner face to distinguish them. In case of not finding these signals, it can be checked manually by placing the glasses in front of a light source such as an LCD monitor and by rotating the glasses and looking through one of the lenses we should check that the image of the monitor is dimmed at certain angles of rotation. This is because the lens is polarizing the monitor light and lets it pass, or not, depending on the angle of polarization.

Do You Know How to Distinguish Polarized Glasses From Those That Are Not?