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lenses spherical and cylindrical

Lenses are a special kind of tool that improve our vision by focusing and bending the light. They bring also an important factor to how we perceive the world around us. Lenses are available in different types but some of the most prominent ones are spherical lenses and cylindrical lenses. These lenses correct vision problems that a lot of people have, but they do so in slightly different ways.

A lens is generally spherical (curved from all directions around like a ball). They are very handy and are used to correct most of the vision problems such as nearsightedness, farsightedness, and astigmatism, etc. Spherical lenses bend light in a way that will allow the light passing through them to focus properly on the retina, a part of the eye. The retina matters because it transmits signals to our brain to construct the images we observe. When the light does not meet correctly, we struggle to see the items obviously.

How Spherical Lenses Refract Light

Cylindrical lenses are slightly different. They only bend in one direction, as would a cylinder. These lenses are designed specifically to correct a condition known as astigmatism, which can cause images to become blurry and unclear. Astigmatism occurs when the cornea, the clear outer part of our eye, is shaped unevenly. This makes light bend nonuniformly, and results in distorted images. Cylindrical lenses correct for this because they focus light more in one direction than the other, bringing images into greater clarity and focus.

There are primarily two spherical lens types, namely concave lens & convex lens. Concave lenses refers to a lens that is thinner in the middle than at the edges. They refract light outward, which can correct some vision problems. Conversely, convex lenses are thicker in the center than at the edges. These lenses enable to bend the light inward and thus able to focus it better. With a combination of both concave and convex lenses, people are able to see much clearer.

Why choose NOAIDA lenses spherical and cylindrical?

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