High tech for higher order aberrations: ZEISS lenses with i.Scription®
In the field of optometry, the refractive errors of sphere (defocus) and cylinder (astigmatism) comprise aberrations of up to the second order. These aberrations can be corrected by spectacle lenses. Higher order aberrations of the eye - such as coma or trefoil - cannot be corrected with eyeglass lenses, as they are dependent on the pupil aperture and therefore to a major extent on the viewing eye. However, they have a major influence on the quality of the retinal image: higher-order aberrations are the cause of reduced visual contrast or poor vision in night or twilight conditions.
With i.Scription®, Carl Zeiss has now developed an optimisation algorithm that takes into account higher order aberrations in order to optimise the corrective power of the lens.
i.Profiler® data become i.Scription®.
The most important component is the data calculation with the computer system at Carl Zeiss Vision –the result of many years of intensive research. Thanks to the extensive experience gained by ZEISS in refractive surgery, this technology can now be utilized in the field of eyeglasses.
To order i.Scription® lenses, send the values determined with i.Profiler® to Carl Zeiss Vision, in addition to the standard values. Here, all of the data is first processed with the optimisation algorithm and then converted into precise production data. The result: i.Scription® lenses specially tailored to the personal needs of each individual person.
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