Any age restriction for Ortho-k?

No, both adults and children can wear Ortho-K lenses. The youngest patient we have was 6 years old, her mother worked with her every night and after 2 months, this cute girl was able to insert and remove the lenses by herself under her mom’s supervision. Also, we have few people in their 40’s and 50’s who love the freedom that Ortho-K brings to them. One eye was corrected for distance vision and the other for reading, this is known as “monovision”.

How quickly is my vision to improve with Ortho-K?

Your vision will improve after the first night and it will improve further and stabilise over the next two weeks of Ortho-K wear because your eye shape remodel with the treatment. For higher degrees of short-sightedness and astigmatism will take longer time to achieve optimum vision.

What prescriptions are suitable for Ortho-K?

Ortho-K typically works best for myopia (short-sightedness) between -1.00 to -6.00. The amount of astigmatism reduction depends on the type of astigmatism and amount. The upper limits for astigmatism reduction are 1.50 diopters of “with-the-rule” corneal astigmatism and 0.75 diopters of “against-the-rule” corneal astigmatism. Ortho-K will not have an effect on the internal astigmatism.

CARL ZEISS DRIVE SAFE

Many people feel insecure, uncomfortable and stressed when driving, especially in difficult light and weather conditions such as rain and mist, or at dusk or night.

On average 83% of spectacle lens wearers also drive. Driving can be a real challenge for everybody , no matter how long the distance, and good vision is vital for safety.

Glaring light from the opposite car.

Make it 3 blinding stars.

And during that heavy downpour.

You know how confusing and radiating it is.

And how worst it can be when you even have problems with the dashboard.

Even when driving in the speed tunnel.

In low light condition.

The pupil reacts to light intensity from its surroundings, specifically the light that directly strikes the eye. In daylight conditions, the pupil diameter is small, whereas it is large at night.

In low light, so-called mesopic conditions, i.e. twilight, rainfall, dark days or night driving, the pupil diameter is in-between small and large. Space perception, as well as distance assessment, becomes more difficult for the driver.

ZEISS DriveSafe Lenses is specifically designed to meet the vision needs of people who want to feel safer and more comfortable when driving with their everyday lenses. ZEISS DriveSafe Lenses are available in both single vision and progressive lens types.

It went through rigorous testing and research.

Benefits:

Better vision in low light conditions for safer and more comfortable driving.
Reduced glare at night from oncoming cars or street lights.
Accurate vision of the road, dashboard, rear-view mirror and side mirrors.

After intensive research in the field of mesopic vision*, the rationale for the development of ZEISS Luminance Design™ Technology was identified and verified during wearer trials. In a nutshell: there is bright light (photopic vision), no light (scotopic vision) and in-between low light (mesopic vision). In mesopic conditions, the light intensity, and thus the pupil size changes: a challenge for visual performance.

Advised by the automotive lighting experts at L-LAB* who provided state-of-the-art lighting equipment, ZEISS vision science researchers carried out glare experiments. These formed the basis of internal studies** using different coating simulations. The blue light spectrum of car headlights (in particular in the 400–450 nm range) using Xenon H.I.D. (High Intensity Discharge) or LED technology produces a glare effect perceived by drivers.

Driving demands a high level of concentration from drivers. Most of the time they need a broad view of the road in order to evaluate traffic conditions. The situation becomes challenging, especially for progressive lens wearers, when they need to switch their focus between the road, dashboard and mirrors. That is when dynamic vision becomes essential.