Did you know …

… that headache and eyestrain can be caused by improperly fitting glasses?

Part 13: Did you know …

… that headache and eyestrain can be caused by improperly fitting glasses?

Achieving the best vision possible for your eyes involves more than just an accurate prescription. It’s also influenced by how your lenses are situated within your frames and how the spectacles are positioned on your face in front of your eyes. Correct lens positioning minimizes headaches, incorrect body posture and eye strain. With the i.Terminal® 2 – the digital centration device from ZEISS – we are able to capture your personal facial parameters, along with those of your selected frame to an accuracy of 1/10 mm. This reduces lens fitting errors, which can account for 40% of loss in visual performance, ultimately providing you with the best vision possible.  

The refraction process has been completed, the right lenses have been chosen for your personal needs and you have selected your preferred frame. Is this the end of the process? Far from it! An extremely important part in the process required to configure your new spectacles has still to come: centration.

Precision is of the essence – there's no such thing as standard dimensions here. After all, every face is different and asymmetrical, the distance between the two eyes differs from one person to another, and of course not every frame has the same tilt and size.

For relaxed, comfortable vision with your new spectacles, the perfect interplay between your anatomy, the lens design and the frame is of paramount importance.

This is the only way in which full use can be made of your visual potential. This is particularly important for progressive lenses! The defined zones for near, far and middle distance vision in the lens design must be optimally positioned in front of your eyes. This considerably enhances wearer tolerance, therefore preventing problems such as headache or strain that may result from an unnatural posture or visual stress.

 

How your lenses are centred

In the past, your optician performed the centration manually and used his or her own visual discretion to assess where your eyes would look through the new frame. That's all a thing of the past. Many opticians now use the ZEISS i.Terminal® 2. This method guarantees optimum measurement, and a fast and pleasant procedure for the wearer.

The measurement is completed in just 60 seconds. All you have to do is stand with a relaxed posture in front of the i.Terminal 2 and look into the system's integrated camera. During this process you wear your selected frame, to which a precision calibration tool has been attached. Two photos are then taken, one from the front and one from the side.

The i.Terminal 2 works with a high-tech camera and intelligent ZEISS software that determines the centration data, saves it and makes the calculations for the production of the lenses – all with a single click.

Brand-new

Thanks to state-of-the art technology, mobile centration is possible with the i.Terminal mobile. Mobile centration is the new technique for measuring individual wearer parameters using ZEISS high-precision technology. It may perhaps be seen as the most convenient and comfortable form of exact centration via iPad.
 

Centration with the i.Terminal 2 from ZEISS

Centration with the i.Terminal 2 from ZEISS

i.Terminal mobile from ZEISS

i.Terminal mobile from ZEISS

These dimensions are needed:

Analysis of right eye

Analysis of right eye

Selection of frame type, fitting height and auto correction

Selection of frame type, fitting height and auto correction

Analysis of left eye and frame tracing

Analysis of left eye and frame tracing

Analysis in the side view

Analysis in the side view

Learn more about centration with the i.Terminal 2 from ZEISS

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“I need the latest technologies to completely satisfy my patients.

That’s why I use ZEISS i.Terminal.”

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Our patients are completely satisfied, they really believe in the products and ZEISS lenses - thanks to i.Terminal. i.Terminal is an instrument that represents everything that ZEISS should be - that is to be at the forefront of measuring technology and ophthalmic lens design. That's why I like it.

Dra. Nasly Pineda,
Eye Care Professional, Colombia

Learn more about Dispensing Tools & Instruments by ZEISS

Optometry in the 21st Century

The development and evolution of technology has greatly improved our lives. From booking a ticket to online banking, technology has made everything easier, faster and more convenient. These innovations have equally impacted the field of eye care.

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