VIDEO EyeLT

The Revolution of the Individual Progressive Lens

Rodenstock presents an absolute world premier at the opti 2011 – EyeLT, the innovation for better vision. The pioneer of individual lenses has taken that which was considered technically infeasible so far and now made it possible through intensive research and development work: two different cylindrical refraction values for distance and near vision in one individual progressive lens.
Hence, Rodenstock underscores its role as an innovation leader once again and makes it possible for astigmatic people who wear spectacles with progressive lenses to have perfect correction in the distance and close up for the first time.
 

1-For the distant vision, the eyes fix in the same direction, as described in the Linsting law.
2-fronts of wave of the cylindrical lens produce the ideal correction.

Technical Limits Overcome
Even now, Rodenstock is the world's market leader in individual, high-end progressive lenses and, thanks to Individual Lens Technology (ILT), it is the only manufacturer to make it possible for opticians to freely vary the design of the lens according to the personal visual habits of the person wearing the spectacles. And now Rodenstock is going one step further – and thereby ringing in a new era. By launching the EyeModel, Rodenstock is expanding the ILT into the EyeLT and supplementing its unique technological pillars with the precise physiological description of the vision process during the transition from distance to near vision.
From an optometric and physiological perspective, there has been a desire for a long time to realise the astigmatic close-up effect independently of the distance correction in a progressive lens. With EyeLT, Listing's Law for close range, the adjustment astigmatism and, on request, the individual, measured near refraction will be taken into consideration in the individual progressive lenses from Rodenstock. What the textbooks considered to be technically infeasible is now possible. The future of the next generation of individual progressive lenses has started with the EyeLT.

3-When we look at an object a near, the direction of eyes and their movements are not any more parallel. The lack of respect of the Listing Law at near, gives for the person wearing glasses, an imperfect vision.
4-Le fronts of wave created by the cylindrical glasses do not produce the ideal correction for near vision.

Making the Impossible Possible
With the new EyeLT, Rodenstock is presenting a one-of-a-kind world premiere. For the first time, different cylinder strengths and axial positions for the distance and close up can be implemented in one progressive lens.
As a forerunner in the field of individually calculated and online-optimised progressive lenses, thanks to the unique optimization method, Rodenstock has once again decisively improved and refined its optimisation process for this. In combination with the high-precision 3D freeform technology, these complex progressive lens surfaces can now be calculated and manufactured for the first time. Taking Listing's Law into consideration for the near range – the change of the axis through the torsional movement of the eye during convergence – as well as the adjustment astigmatism in one progressive lens opens up completely new possibilities in caring for astigmatic persons who wear spectacles with progressive lenses. Hence, Rodenstock has disproved the textbook opinion that has applied thus far and set another milestone in the history of lens development.
 

EyeModel makes possible the impossible for a perfect vision at near, with the correct cylindrical value, 5-preservation of the Law of Listing  and 6-the adaptation of the cylindrical powers for near vision.

In three steps to success: from ILT to EyeLT
As soon as March 2011, individual progressive lenses from the Impression® product family will be calculated based on EyeModel Step 1: In addition to the data acquired from the distance refraction, individual parameters, visual habits and addition, the adjustment astigmatism and Listing's Law for the close range will also be taken into consideration and used in the calculation of the physiologically correct near refraction values. Nothing changes in the optician's work procedure and there is no additional time involved. However, the customer will get considerably improved and larger visual areas up close through the improved and physiologically correct calculation and optimisation of the intermediate and near ranges. Performance increases of up to 25% in the near range are thereby achievable.
 

In the next step, EyeModel step 2, an individually measured near refraction can be specified as well if need be. The near refraction values are communicated to Rodenstock together with the classical refraction data, individual parameters, design data for Impression FreeSign®, and the centring data.
The best-possible and largest near vision ranges are made possible by taking into consideration the individually determined near refraction values. The clearer the difference between the values of the distance refraction and those of the near refraction, the greater the effect on the visual areas in the near range. Here, the performance in near vision can be increased once again by up to an impressive 40%.

In a third step, Rodenstock will also offer a method for high-precision measurement of the eye with an appropriate measuring device. The measured values of the eye will then be fed into the calculation and optimisation of individual lenses in a completely new way.
This comprehensive concept for better vision will become the benchmark for the best optometric care for spectacles wearers.

EyeModel Step 1 will be launched in March 2011 worldwide for Impression® progressive and near comfort lenses. EyeModel Step 2 will be added in 2011 for markets with a high affinity for high end lens designs. The third step will be available in the markets with high optometric potential as of 2012.

Decoding Near Vision:
Pioneer work in the best sense of the word
"Our claim is to help people get the best-possible vision with individual solutions – and to help our customers to get the best products in the market. We have succeeded at doing so with this development," says Gregor Esser (Manager Basic Research Optics), who is the responsible project manager for the development of the Rodenstock EyeLT. The benefits are obvious to opticians. Their core competence, i.e. the subjective refraction, is strengthened so that they can sell higher quality lenses without a great deal of additional effort. Their customers will be much more satisfied at the same time. This is because it is possible for the first time for a person who wears spectacles with progressive lenses to also have complete correction in the near range, thanks to the EyeModel. The visual areas in the near range will become noticeably larger. The result will be significantly better for almost one-quarter of the spectacles wearers. Therefore, EyeLT quite simply means: See better.

The revolution of the Individual Progressive Lens Rodenstock overcomes technical limits with EyeLT