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ASPHERIC CONTACT LENSES

Practitioners have utilized aspheric contact lenses for an extensive time to augment the depth of focal point of the eye (multifocals). More newly, makers have intended "aspheric" to right for sphere-shaped irregularity (SA) of the lens and/or the eye.

Additionally to their sphere refractive power, every spherically surfaced aspheric contact lenses set up SA in direct proportion to their sphere power (Dietze and Cox 2003). as well, human eyes have their personal SA . In premise, we can accurate either or both of these SAs by making an exact, very symmetric aspheric in the lens refracting surface. One reason of our study was to utilize wave front aberrometry to appraise the capability of clinically accessible aspheric contact lenses to accurate SA.

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