High Tech for Super-Sharp Customized Vision

Revolutionary technology yields further improvement in lenses

Even sharper, even better contrasts, even more brilliant – it sounds like a commercial for a high-end TV set. Yet we are talking about something very different. In fact, we are describing a revolutionary process that improves the quality of lenses. The new i.Profiler® system is the first of its kind that can analyze individual eye data never used before in the correction of vision problems. This data can now be used to manufacture optimal lenses - i.Scription® lenses. 

Revolutionary technology yields further improvement of lenses

Revolutionary technology yields further improvement of lenses

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:


  • Sharpness of vision (visual acuity)
  • Spatial vision
  • Eye interaction

i.Scription® lenses improve human vision

All of these aspects are considered in the calculation of lens values. For the patient this has a huge benefit: The performance of the eye can be analyzed by the eye care professional down to a one hundredth of a percent. This translates into a boost in accuracy compared to conventional methods by a factor of 25. Vision problems that were ignored until now are now part of the customized lens calculation. Customers receive lenses that not only give them sharper vision with improved contrast, but that also deliver much more brilliant color over the entire spectrum.

How is this possible? An example

Many people who wear glasses have no vision problems during the day. However, once it gets dark, it becomes very hard for them to see. Excessive glare and diffused light irritates their eyes severely. Driving a car becomes a bigger safety risk. This could be the result of lenses that have not been optimally adjusted. The conventional vision test known by ophthalmologists and eye care professionals as “subjective refraction” – the traditional letter recognition test – is not capable of detecting all vision problems. One of the tools used is a measuring device and the other essential ingredient is the cooperation of the customer. Those who have participated in this exam know how difficult it can be to detect the obvious differences.

Many people who wear glasses have problems with night vision

Many people who wear glasses have problems with night vision

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.

Fast and precise: Lens alignment with the i.Profiler®

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:


  • The eye exam with i.Profiler®
  • The conventional eye exam
  • Calculation of lens values using a new mathematical method
  • Lens production with maximum precision


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.