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Buy Cheap Spherical Lenses Online
Spherical contact lenses are the number one choice for correcting near vision (myopia) and distance vision (hyperopia). This type of lens is rotationally symmetric, that is, it has the same shape all around. The name of the lens is derived from the term sphere, which describes the diopter value needed to correct the visual defect: in myopia the diopter value is negative, in hyperopia it is positive.
What are the benefits of spherical contact lenses?
Spherical contact lens models are the most commonly used. Indeed, spherical lenses allow nearsighted and farsighted people to clearly recognize objects, even without glasses. Spherical contact lenses refract light so that the person with defective vision can see clearly again. It does not matter whether the spherical lenses are soft or dimensionally stable, whether monthly or daily lenses.
What is the difference between spherical and aspherical lenses?
Spherical aberration is unique to the basic shape of a spherical surface and independent of misalignment or manufacturing defects. This means that a perfectly designed and manufactured spherical contact lens will always exhibit spherical aberration in nature. To compensate for this spherical aberration, another type of lens is needed. Aspherical contact lenses focus the light onto a small point and thus do not produce blurring and improve image quality. They are the perfect choice for people with astigmatism.Lenses are medical device. Read the instructions for use before use.