Back To Top

Find a ZEISS Eye Doctor

Everything You Should Know about Your New ZEISS Precision Lenses

Contact

Get in touch with us.

Contact form
Customer Service

Features

No face is perfectly symmetrical, and no two people's eyes are the same distance apart

Only after the glasses frames have been precisely adjusted to the individual wearer can the lenses perform to their full potential.

As children we discover that the two sides of our faces are not same, i.e., they are not symmetrical. If you hold a mirror up vertically over the bridge of yournose and look at a mirror image of each of the two sides of your face, you can see how your face would look if it were symmetrical and how strange that would look. This will also show you how differently we see with our right and left eyes through our glasses. Thus, when the eye care professional adjusts eyeglass lenses to their frames, it is very important for him to know precisely how you look through your glasses. Only then can the lenses be ground properly for the particular frames.

No face is symmetrical, and no two people's eyes are the same distance apart

Only after the glasses frames have been precisely adjusted to the individual wearer can eyeglass lenses perform to their full potential.

Did you know that the even the best precision eyeglass lenses cannot perform to their highest potential if the centration, i.e., the adjustment of the lenses to the particular frames, the distance between your pupils, the proportions of your face and even your posture have not been measured properly? Up to 40% of valuable visual acuity can be lost this way. This is important for single vision lenses and especially important for the centration of progressive lenses. For progressive lenses, all three vision zones (distance, intermediate and near) have to be optimally adjusted. Ideally, with a normal posture, thewearer should be able to read comfortably while looking through the near zone, work at a computer through the intermediate zone and drive a car with the distance zone. The correct centration and, of course, the selected lens design plays a decisive role in determining the spontaneous tolerability of progressive lenses. A difference of a millimeter can be crucial.

No face is perfectly symmetrical, and no two people's eyes are the same distance apart

The i.Terminal®2 from ZEISS provides an objective image of the glasses wearer with the frames.

In the past, eye care professionals did the measurements for the centration of eyeglass lenses manually. The glasses wearer looked through the selected frames and the eye care professional used a felt pen on the lenses to mark where the pupils were and the distance between them.


Today, eye care professionals can work much more precisely – with an accuracy of a tenth of a millimeter. The i.Terminal®2 from ZEISS provides an objective image of the glasses wearer with the frames. With the selected frames, the customer stands in front of the centration device and centration is done with a high-quality photo, simply, quickly and extremely precisely. The benefit of this is that the adjustment procedure is more pleasant for you, since the eye care professional does not have to enter your personal space to do the measurement. You should stand as naturally as possible, and look through the glasses exactly as you would do in everyday life. The more precisely your eye care professional knows how you look through your new glasses, the better he or she is able to adjust the lenses. The i.Terminal®2 works with a high-tech camera and intelligent ZEISS software that with one click measures the centration data, saves it and makes the calculations for the production of the eyeglass lenses.

Our tip:

After the initial phase of getting accustomed to your new glasses, if you do not feel comfortable with them, the centration may not have been properly adjusted for you. Please speak with your eye care professional about this.

Related articles

Here's how glasses can improve your well-being
Progressive Lenses with a Difference
Can the wrong pair of glasses or bad light damage your eyes?
How many glasses do you need?
Better vision with a new pair of glasses.
 

We use cookies on this site. Cookies are small text files that are stored on your computer by websites. Cookies are widely used and help to optimize the pages that you view. By using this site, you agree to their use. more

OK