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Polarized lenses for sunglasses

Polarized lenses have a special coating that increases visibility by filtering out intense reflected light, and thereby reducing glare. These lenses are specially designed to reduce glare from…

Sclera

The sclera, also known as the white of the eye, is the opaque, fibrous, protective, outer layer of the eye containing collagen and elastic fiber. In humans the whole sclera is white, contrasting…

Scleral contact lenses

The diameter of the lens (LID) is up to 25 mm – compared with the corneal contact lenses. It is the first type of contact lens that has been…

Semi-scleral contact lens

These contact lenses have an overall diameter in the range of 12.5 – 15.5 mm. It also includes soft contact lens – they are…

Shortsightedness (Myopia)

Shortsightedness, or myopia, is an optical defect of vision (refractive defect) resulting from the eye being too long or the refractive power of the…

Slit lamp

This is a biomicroscope with an optical system used to exam the anterior segment and posterior segment of the eye. With its help various…

Solutions for contact lenses

This is the most widely used method of contact lens care. This group includes all the non-peroxide solutions on the market. To reduce the risk of reactions to the preservative component is…

Spherical contact lenses

The spherical lenses are the safest lenses that replicate the spherical surface of the eye. They correct myopia and farsightedness…

Stenopeic contact lenses

Stenopeic contact lenses have a totally transparent substrate and only a small hole through which concentrates the sun's rays and which can be seen. These contact lenses can help in…

Strabismus

Strabismus or squint. This is a condition where the eyes do not look parallel as one deviates from the normal direction. Contact lenses can correct strabismus, but it is necessary…

Striae

For users of soft contact lenses corneal edema manifests as a formation of stretch marks in the rear part of the stroma. They have a white-gray color…

Sunglasses Bridge Size

Bridge or bridge width or bridge size is the area that arches up between the lenses over the nose and supports the majority of the weight of the glasses. The bridge measurement is the distance…

Sunglasses Nose pads

Nose pads are soft plastic pieces that are attached directly to the frame or to the pad arms. They help to keep the frame in its proper position on your face, while ensuring that the shades fit…

Swelling of contact lenses

Swelling of the material of contact lenses is increased by the compound MHP – 3– methoxy-2-hydroxypropyl methacrylate. Swelling is important for hydrogel contact lenses, where the…

UV protection and filter categories for sunglasses (UV400 Filter)

Many people who wear sunglasses believe that the darker the colour of the lenses, the safer it may be for the eyes. Here's the truth. The…

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