Well over 700 years ago, man discovered a way to improve human vision with a visual aid. Eyeglasses as we know them today were first developed around 1850. A lot has happened since then. The latest milestone is a technology that facilitates a highly precise examination of your eyes.
Why is this discovery so important? Because no two eyes are the same. Eyes are just as unique as fingerprints. The i.Profiler® by Carl Zeiss Vision now makes it possible to measure eyes more accurately than ever before. The solution is based on wavefront technology. In addition to the standard methods eye care professionals use, which usually involve testing the strength of vision only in daylight with high contrasts, this system also takes into accountchanges in light conditions, reflections, colors and changing contrasts. This means that the performance of the eye is also checked objectively under a variety of light conditions and contrasts. Consequently, factors that are unique to each person can be analyzed with maximum precision. This includes:
Subjective refraction tests will still have to be performed – for instance to analyze spatial vision. The new objective measuring system by Carl Zeiss Vision is used in addition to the conventional method. As a result, the potential errors or limits of the previous lens calculation system can now be avoided or compensated, including tired eyes and the restriction to the evaluation of daytime vision performance.
The i.Profiler® analyzes each of your eyes independently and when the pupils are dilated, like they would be at night. Moreover, it is the first system that registers what are known as “higher-order aberrations of the eye.” While this term sounds scary, higher-order problems pertain to difficulties involving the dilation of the pupils of your eyes. Dilation problems cause light rays to be refracted more intensely on the outside edges of the lens than in the center, which results in reduced contrast perception. Another higher-order problem is the asymmetry problem, which occurs when light rays are refracted in such a manner that one sees something reminiscent of a fiery tail at the edges. Both phenomena are responsible for bad vision at dusk or at night.
These measuring results provide the basis for i.Scription® lens optimization, which Carl Zeiss Vision now offers as an add-on option for lenses. The system includes four components:
Patients who already have the new i.Scription® lenses are very enthusiastic about them. They enjoy greatly improved night vision and feel safer in their cars when they drive. They also perceive colors more intensively, and see everything with much sharper clarity and greatly improved contrast.
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