What You Need To Know About Glasses || Complete Guide:

Jun 10, 2019 by

The view is one of the five senses thanks to which we perceive light and know the shape, color, distance, size, and movement of objects. More than 80% of the information that comes from outside, including sensations and emotions, comes to us through the eyes. For buying online quality glasses at cheap price, GlassesShop is the best platform. GlassesShop.com provides you the every type of glasses with discount.

The visual system acts like a video camera, capturing still or moving images, automatically focusing on the world around us. Binocular vision (seeing with both eyes) allows seeing in three dimensions, allowing the calculation of distances.

The glasses are composed of the frame (frame) and crystals (lenses) that, perfectly graduated, mounted and adapted to the face, allow to compensate the refractive errors: myopia, hyperopia, astigmatism, presbyopia…

In our country, there are approximately 10 million myopic, 6 million hyperopic and 16 million presbyopia (sight tired by age). All of them need some type of correction.

The glasses, in addition to providing good vision, are necessary for eye protection in certain jobs and activities, such as welders, turner, or sports such as diving, skiing, cycling…

The optometrist is the university professional in primary care of the vision sciences who helps and advises when it comes to solving visual problems, prescribing and facilitating the appropriate solution for each case.

1. – What types of crystals are there to make glasses?

There are mineral lenses, organic lenses, and polycarbonate lenses.

2. – What are mineral lenses?

The mineral lenses are made of a material intended for common graduations and for high graduations, since they allow maximum thickness reductions, thus achieving better aesthetics. They are characterized by being thinner, more resistant to scratching, heavier, break easily and not be recommended for children.

3. – And the organic lenses?

They are the present and the future of the lenses due to their technical and material characteristics. It is a lens of a hardened resin that belongs to the group of polyesters. They are intended for low and medium ametropic. Its most important advantages are being twice as resistant as the mineral matter, being able to adapt to any type of frame, being very light and almost unbreakable, since they meet the standards of impact resistance and/or incandescent particles, offering great safety, everything to children. The drawback is that they are easily scratched.

4. – What is the lens of the future?

The lenses with better perspectives for the future are polycarbonate lenses. The reasons are: to have the maximum resistance to impact, to be very fine thanks to its index 1.59, to be very light and provide great comfort and be manufactured with flat bases so that they improve the user’s aesthetics.

5. – What types of frames are there?

The most important are the metal frames and paste frames.

6. – How are the metal frames?

They are made with different materials, such as stainless steel or classic alloys (alpaca smelting). There are also frames made with gold, titanium (they will be the lightest, elastic and flexible) or double (it is an alpaca plating with gold).

They are presented with gold and silver tones, with lacquered colors and with different shapes, following the fashion trends. There are glasses mounted in the air – they are those in which the elements are held with screws to the mount – or with nylon threads at the bottom.

7. – And the pasta?

They are manufactured with cellulose acetates or milled, they allow a good quality and resistance in addition to being able to apply fashion colors with more than one color (sandwich). Those made with injected materials provide greater rigidity and brightness but only allow work with one color.

8. – What should be taken into account when choosing a frame for glasses?

We must always choose the shape of the glasses taking into account our type of face or the image we want to reflect. The face is the most visible and expressive part of the body, the eyes being the key point of fixation during a conversation. We will have to choose the amount with which we are identified and comfortable and that at the same time is comfortable and practical for every moment of the day. The glasses end up being a complement to our wardrobe, the variety that exists and the possibilities are almost endless as well as the situations throughout the days. It is not the same to go to the pool as to the supermarket, to go to the gym or to a gala dinner, every moment requires a different spectacle.

9. – What are refractive errors?

Refractive errors are the most frequent cause for which vision professionals are consulted. There are many symptomatic manifestations with which the patient comes to consultation, from habitual complaints about the loss of sharpness in distant or near vision to headaches or dizziness, passing through tearing, red eye or heavy eyelids.

10. – What does it mean to have an ametropic eye?

If the combination of all these factors causes that the image of an object is formed in the retina, we will say that we have an ametropic eye, that is, without graduation. But if the image of the object falls in front of or behind the retina it will be an ametropic eye, that is, with graduation.

11. Do we have to take special precautions in case of tired eyesight?

In the case of presbyopia (people with tired eyesight) we must make sure that the glasses are appropriate for the working distance. Thus the users of progressive lenses will not present problems when working with video terminals (if the screen is placed at the appropriate height), but they will be able to do it users of monofocal from afar or bifocal.

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1 Comment

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    Rizwan Ali

    I have eye disease called myopia. Can it be cured ?

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