A prescription can vary due to pupil dilation or contraction. i.Profiler®plus measures how light rays travel through the optical system of your eye at up to 1,500 points and determines a vision profile of your optical performance with an accuracy of 1/100th of a dioptre. As your prescription can vary during the day and night due to contraction or dilation of your pupils, i.Scription® by ZEISS technology can take this variation into account: it uses the measurements from the i.Profiler®plus and a patented algorithm to provide you with an optimized prescription and customized lenses for better vision both day and night – and all with enhanced colour vision, too.
Night and twilight vision presents our eyes with a special challenge. Driving at night confronts our eyes with more glare, from oncoming traffic for example. Many people find this problematic and even try to avoid driving in the dark. It is true that our visual performance may differ during the day and at night. But not every eye test takes our night vision into account. Leading-edge technology from ZEISS, the i.Profiler®plus, can reveal differences in the performance of our eyes from day to night. ZEISS i.Scription® lens technology can incorporate these measurements in the lens design to provide enhanced daytime and night vision – and greater safety, too.
Subjective refraction, the procedure performed by your optician to determine your prescription, is conducted in daylight. Patients must play an active role and describe what they see with the various test lenses. Their pupils are contracted due to the daylight conditions. In other words, only the patient's daytime vision is taken into account during the measurement.
However, the measurement performed with the i.Profiler®plus is objective. The patient looks into the measuring system for a very short time only. In a matter of seconds, the wavefront technology analyzes 1,500 measurement points. And that is not all: the two eye profiles also show how well the eyes perform with dilated pupils, i.e. how well they see at night. Visual defects which the experts call "higher-order aberrations" and which can impair our vision are also detected and analyzed.
Up to 1,500 measurement points are incorporated in the production of the lens along with the values measured during the subjective refraction. In this way, individualised lenses featuring i.Scription® technology are produced which considerably improve our night vision, and may improve perception of contrast and color.
My favorite i.Scription moment had to be the first time I put the glasses on my own eyes. So I was pretty impressed how right away I could see so clear in the distance. So that was kind of an eye opener and then my receptionist got her‘s before I did and she said the same thing.
Dr. Jeffrey Frank,
Eye Care Professional
As one of the inventors of i.Scription®, I’m always delighted when a customer writes to thank us for the better quality of life he is now enjoying.
ZEISS Product Management
Improved night vision: Many people who wear these spectacles would never want to give them up again. They have decided to go with ZEISS precision lenses featuring i.Scription® technology. Carl Zeiss Vision’s i.Scription® is a technology developed by the leader in optometry lenses that analyses the individual profile of each eye and takes the information gathered into account in both, the computation and production of the spectacle lenses.
The developments of i.Scription® and the i.Profiler® marked the latest innovation milestones in the production of lenses. i.Scription® aims at delivering a new quality of vision. In this article, we will take a look behind the scenes at Carl Zeiss Vision in this interview with Lars Mendel, the i.Scription® Project Manager.
Vision problems can be solved in more individualised ways than ever before and measurement methods are constantly becoming more precise. But what are the latest developments and trends in the ophthalmic optics area? To find out, BETTER VISION asked two lecturers who teach in the Ophthalmic Optics course offered at Aalen University in Germany.