Most drivers are exposed to difficult driving conditions that impact their vision, including driving in rain, snow or fog, and of course driving at night. For most, this can be a major source of stress - in fact, over two thirds of adults report difficulty driving in these challenging visual conditions. Now there’s ZEISS DriveSafe, an all-day lens and coating solution designed for patients who need the most help with vision while driving. ZEISS DriveSafe’s unique technology addresses the most stressful visual challenges drivers face today.
ZEISS DriveSafe is available in both single vision and progressive lens types.
One pair of glasses for everyday use and safer driving:
For many drivers, the greatest visual problems come in low light situations (mesopic conditions like cloudy/rainy days and twilight). Eyeglasses have never been designed to account for the size of the pupil in these conditions. As a result, space perception and distance calculation can be especially difficult when driving.
ZEISS conducted intensive research into mesopic vision in developing Luminance Design Technology.* Standard lenses are designed using single-ray tracing, which does not account for pupil size. This can result in a lens that does not offer optimal clarity, especially when the pupil size is larger in low light conditions.
*For more information please refer to the ZEISS DriveSafe White Paper
DriveSafe lenses address this problem with Luminance Design Technology (LDT). LDT incorporates the pupil size for driving in mesopic conditions and optimizes the lens design accordingly. As a result, wearers have better vision all day, especially in low light conditions.
No light (darkness) = scotopic vision with large pupil
Small depth of focus, little to no peripheral vision
Low light = mesopic vision with varying pupil size
Challenging conditions due to variation in depth of focus and dimly lit peripheral vision
Glare describes the difficulty of seeing in bright light, such as direct sunlight or artificial light. Market research and scientific evidence both indicate that perceived glare in traffic is linked in particular to LED and Xenon HID light sources as used in modern car lighting technology. Intense glare can be a risk, as it reduces the visibility of objects and sensitivity of the eye to contrast. Glare also can be subjectively perceived as discomfort and irritation.
ZEISS vision science researchers carried out glare experiments. These formed the basis of internal studies** using different coating simulations. Scientific evidence shows that the blueish, high-energy part of the visible spectrum (in particular in the 440–470 nm range) using LED or Xenon H.I.D. (High Intensity Discharge) technology is linked to a glare effect perceived by drivers.
DuraVision DriveSafe coating reduces glare by reflecting the most harmful wavelengths from Xenon and LED headlights. ZEISS DriveSafe is preferred by patients for headlight glare reduction by more than 2 to 1.
**Compared to premium ZEISS coatings. With DuraVision DriveSafe 64% less test drivers reported issues with glare with the new coating than with other premium AR coatings.
Without DuraVision DriveSafe Coating
With DuraVision DriveSafe Coating: glare reduction preferred by more than 2 to 1.
Driving demands a high level of attention. Drivers need a wide, clear view of the road in order to evaluate traffic conditions, but they also need to shift rapidly from the road to the dashboard and mirrors. This can be especially challenging for progressive lens wearers.
ZEISS conducted an eye-tracking study with automotive research institute FKFS* at Germany’s University of Stuttgart. This study precisely mapped the actual visual behaviour of drivers to determine what areas of vision were needed the most.
*FKFS Research Institute of Automotive Engineering and Vehicle Engines Stuttgart is an independent foundation associated with the University of Stuttgart. Founded in 1930, FKFS has became one of the largest and leading research institutes in the field of automotive engineering, serving major automobile manufacturers and suppliers. For more information please refer to the ZEISS DriveSafe White Paper.
Using this data, ZEISS designed the DriveSafe Progressive with optimized distance and intermediate viewing zones, reducing the need for horizontal head movement.
Up to 43% larger** mid-distance zone for easier focus switching between dashboard and mirrors. And up to 14% larger** far-distance vision zone for a wider view of the road.
**Compared to ZEISS premium progressive lenses
||Clear / tinted