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The election this summer: polarized glasses? 

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Despite the fact that polarized glasses exist since many years ago, these glasses are considered as fashion since three years ago. But, if the sales of this sunglasses style keep going during so many years is not only because these are fashion, but because of their usefulness.

When we put on sunglasses, the pupil gets dilated. This means that without an adequate protection against ultraviolet rays (UV), the sun can affect more negatively on our eyes and can even lead to lesions. In this sense, the polarized glasses can also offer a UV protection of the 100%.

Which other advantages do they have?

  • These fight light from all angles: the sun light reaches our eyes from all possible directions. In fact, there are typical situations in summer time that multiply the angles where the light comes from: the reflection of the sea water, swimming pools and asphalt. The polarized glasses have a special filtre that avoids all reflections coming from horizontal surfaces.
  • Vision without reflections that improves the visibility.
  • The clarity and contrast of what we see is superior.
  • These glasses are adequate for people with high sensibility to light and also for children.
  • As any other lens, this diminishes the eye fatigue.
  • These glasses can be prescription glasses.
  • Needs to be mentioned the fact that, as disadvantage, in some cases the polarized glasses diminish the visibility of cell phones screens, GPS or other devices. Despite this, these are the most recommended, even more for those who spend lots of hours under the sun light and are exposed to situations where the light reflection multiplies, such as, for example, people fond of navigation, beach or those who drive during many hours.

The 5 advices to choose appropriate sunglasses

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Do you know that the sun overexposure can cause eye problems such as photokeratitis (corneal injury) or favour the development of cataracts or macular degeneration? The election of appropriate sunglasses is not only a  matter of fashion, but a matter of visual health. Biòptic provides you with 5 advices in order to get right with your choice:

1. UV protection glasses:

It is essential to check the UV, ultraviolet rays abbreviation, grade. The need of more or less protection will depend on the glasses usage. During the summer, it is necessary a protection grade between 81% and 92% of absorption, which is adequate for a medium and high sun brightness.

Glasses must be used at all hours, since the UV rays, even though they are imperceptible, these are also present when cloudy days. Generally this information is indicated on the glass sticker.

2. Which type of glass must be chosen?

Polarized: this is the glass that protects the most par excellence. All the residual reflections are avoided with the polarized filtre.

Sunsitive: these glasses are used by sportsmen that play activities where they move from direct light to shadow; the glass varies its tone depending on the quantity of light.

Degraded: the most chosen glasses because of aesthetics reasons; the tone of these glasses is more clear gradually. That is, the upper part is darker and the lower part is more clear. These are adequate to wear indoor and when it is not very sunny.

Uniform: the colour of the glass is uniform and this is the most usual way we find sunglasses.

3. A frame that protects the eyes from all angles:

–The large variety of frames makes us choose the best one according to our face shape in order not to leave any crack where the sun can get into and also that these suit us:

–Heart shape face (wide forehead and pronounced chin): the aviator style of glasses is recommended.

–Square face (wide forehead and jaw): the glasses that are recommended in order not to give too much protagonism to the forehead are the oval glasses or those that do not have the upper line straight.

Round face (wide forehead and voluminous cheeks): one must not choose round shapes and select rectangular ones, which are glasses that are wide in the upper part and narrow in the inferior one.

4. Children, the most vulnerable to sun:

Do you know that it is not until the age of 12 that the crystalline is completely formed and the retina is not yet protected? In the same way that we protect children’s skin from the sun, we must also protect their eyes. Special care must be taken into account when protecting their vision.

5. Optician’s as quality filtres:

The best way to choose sunglasses is consulting experts. That is why going to the optician’s to find the sunglasses for this summer means a secure purchase. Listen to experts’ advice.

Ortho-k contact lenses, your allied contact lenses this summer for 3 reasons

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The beach sand can easily get into your eyes, which can make the conventional contact lenses, those used during the day, leap. To suffer a blow in the swimming pool or a bycicle fall can also lead to the traditional contact lenses loss, which can even get broken. These are only three examples from a big list of summer holidays moments that prove that wearing glasses or conventional contact lenses is not always the most comfortable option. Can you imagine a type of contact lenses that one uses during the night and which allow one to have a clear vision during the day without wearing anything in the eye? The ortho-k contact lenses will turn out to be your best allied contact lenses during summer time for these main reasons: security, comfort and health.

 

  • The most secure option

Since these contact lenses are nocturnal, the vision is clear during the day without wearing any type of contact lense in the eye. This is possible because the Ortho-k contact lenses apply the Refractive Corneal Therapy (CRT), which modifies the corneal curve correcting the myopia. This is the most secure option, since it is impossible to harm our eyes, because we do not wear any contact lense. This is an absolutely secure treatment, since it has been approved by the United States FDA, which is the american health organization and also from the European Community.

 

  • The comfort of wearing no contact lenses

The fact of wearing neither contact lenses nor glasses, because the Ortho-k contact lenses correct the myopia during the night, makes the probability of irritation and inconveniences typical of the conventional contact lenses decrease. In a period where the sport, beach or swimming pool activities are more appropriate, the fact of wearing neither contact lenses nor glasses is a pleasure. Despite this, one must  not forget about the sunglasses, especially in the case of children.

 

  • A matter of health: to slow down the myopia

The therapy applied by means of the Ortho-k contact lenses, the Refractive Corneal Therapy, is the best one to slow down the myopia with significant results. These contact lenses become the unique choice to surgery, ill-advised in the case of children and young people with evolutionary myopia and in other particular cases.

Did not you know the Ortho-k contact lenses? Get in touch with us or fix an appointment for more information!