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Sunglasses - page 127

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Sunglasses - page 127

Quality sunglasses do not only serve as a stylish accessory to your outfit. When choosing them, it is not enough to think only about whether they will suit you. Protect your eyesight and avoid possible problems. We recommend that you buy sunglasses only in specialized stores and opticians.

Pay attention to the quality of the sunglasses

Cheap glasses from street stalls do not have 100% protection against harmful UV radiation. Sunglasses with the best protection are called polarized. You can easily test whether they have this function using special cards or on some types of phones. When you look at the phone while wearing polarized sunglasses, the display should go completely dark at a certain angle.

The material also plays a role in the selection of sunglasses

Cheaper sunglasses are usually made of plastic materials that break more easily. With glasses, it often happens that they fall off or you sit on them. And that's why it's worth investing in quality materials that will last you for several years. An optician can customize your glasses.

What types of frames are there?

The material from which the sunglasses are made plays an important role in the selection. The main types of sunglasses frames include acetate, metal and plastic. However, you also have a choice of aluminum, nylon, propionate and steel. Low-quality metal frames contain a larger amount of nickel or chromium, which may pose a risk of allergy.

What is the difference between plastic and glass glasses?

The biggest advantage of glass lenses is that they are more resistant to scratches. At the same time, they prevent the penetration of infrared radiation. However, they break more easily. Plastic glasses are more durable, but they can be scratched and also do not protect against infrared radiation.

Why does the color of sunglasses matter?

Different color variations of glasses serve as a great accessory for different occasions. At the same time, however, they are suitable for other situations. For example, gray and brown glasses are recommended for driving, as they do not distort primary colors. This makes your ride safer. The polarizing effect prevents glare. Green glasses are universal and for every situation. They also prevent distortion. Yellow and orange are mainly chosen by athletes, but also by people who often move in poor conditions, for example in fog. Other colors will not significantly affect your activities.

Face shape guide

What is your face type?

Good to know
If you think you have a face type similar to any of the ones listed and at least 2 main characteristics match, you’ve found a match!

Square shape

Square jaw
The face has sharp edges
Forehead, cheekbones and jaw are almost equally wide
Face length is similar to its height

Heart shape

Widow’s peak hairline in the middle of the forehead
Pointier chin
The forehead and cheekbones are the widest
Narrow jaw

Round shape

Face length is similar to its height
The jaw has no distinctive features, it is very rounded
Cheekbones are the widest on the face

Oval shape

The face is longer rather than wider
Cheekbones are more prominent
The forehead and jaw are rounded
No sharp/distinct features

Contact lenses guide

Diopter/Sphere (D/dpt./PWR)

Diopter/Sphere (D/dpt./PWR)

This value determines the power of the contact lens. Generally, spherical power is given in plus (+) values for farsightedness and minus (-) for nearsightedness. ATTENTION - the number of diopters of contact lenses may not match the diopters of your glasses.

Curvature (BC)

Curvature (BC)

The curvature of the contact lens indicates the curvature of the eye in millimeters and thus also how closely the lens adheres to the eye. Usually this dimension is between 8-10 mm. Lower curvature, e.g. 8.40, means that the lens is more curved and will “fit“ more tightly on the eye. A higher curvature value, e.g. 8.70 means that the lens is more flat.

Diameter (DIA)

Diameter (DIA)

This value indicates the diameter (or size) of the lens. Soft contact lenses have a wider diameter than hard contact lenses.

Cylinder (CYL)

Cylinder (CYL)

The cylinder value is important for making contact lenses for astigmatism. It describes the strength of astigmatism and has a minus value increasing in 0.25 increments that compensates for the curvature of the cornea.

Cylinder axis (AX)

Cylinder axis (AX)

The axis is the second important parameter in astigmatism. It indicates the exact position of curvature on the cornea in the range of 0° - 180°.

Addition (ADD)

Addition (ADD)

Addition is the value given if you suffer from presbyopia. It is the difference between the dioptric value for distance and the dioptric value for near. Values up to 1.25 are considered low (also referred to as “low“), up to 2.00 as average (“medium“) and until 3.00 for high (“high“).