The dual lens system for presbyopia correction

Treat presbyopia individually, flexibly and sustainably with a unique degree of freedom.

Smart system, combined benefits

Flexible due to reversibility

State-of-the-art and non-traumatically reversible implantation thanks to trifocal AddOn IOLs.

Upgrade for consignment inventory

Optimized availability of presbyopia solutions in your consignment inventory.

Economically attractive

A single price for spectacle independence – regardless of optics and refractive power values. (only available in Germany)

Safe and flexible: The Liberty² dual lens system combines two artificial lenses in one eye. The smart combination of a monofocal (or toric) basis lens in the capsular bag and a trifocal AddOn lens in the sulcus allows for state-of-the-art and non-traumatically reversible presbyopia correction during refractive lens exchange (RLE) or cataract surgery. In the process, Liberty² offers freedom in two respects: spectacle independence for presbyopic patients and therapeutic freedom for operating ophthalmologists.

IOL combinations for all needs

What Liberty2 users are saying

“I am impressed that Liberty² gives the surgeon a wide range of individual options for the optical treatment of their discerning clients and that the optical quality of the multifocal AddOn has been further improved.. Patients report significantly reduced halos and glare. This is the right way.”

Dr. Michael Stade visualeins MVZ GmbH, Osnabrück

“I prefer the Liberty² system from 1stQ for my multifocal lens operations because it works perfectly, is highly variable and absolutely reversible.”

Dr. Martin Schimkat Argus Augen MVZ GmbH, Karlsruhe

“I have used Liberty² from the outset and patients are still thrilled with the dual lens system. It gives us maximum flexibility in presbyopia correction. Thanks to this system’s diverse combination options, we can offer our patients highly individualized and sustainable care. As a surgeon, Liberty² offers me a degree of freedom that I have always wished for.

Dr. Detlef Bludau Clinic for ophthalmology, Lünen

“The Liberty², basis IOL and AddOn are implanted in a single procedure without a problem and the centration of the AddOn in the sulcus is really good. The 1stQ dual lens system is now permanently included in pre-operative patient information at our practice.”

Dr. Ulrich Berens Karlsruhe

“In the summer of 2019, we became the first center in Munich to start using Liberty² and the results are excellent. I am glad to have a back door in case a patient subsequently opts for a multifocal IOL. Liberty² allows me to work in an individual manner with the various additions for near vision and the reversibility is reassuring in case of possible changes in the visual status of a patient’s eyesight.”

Prof. Dr. Michael Koss Eyecenter Nymphenburger Höfe, Munich

“With Liberty², we can offer our patients highly individualized and sustainable treatment. The various near vision options can be perfectly matched to peoples’ needs. Subsequent adjustments according to changes in the eye can be easily carried out – to me, this makes Liberty² unique.”

Dr. Erik Domeier Eye Clinic, Lübeck

“Today, I implant a toric basis lens together with a trifocal AddOn; tomorrow, I am the patient’s hero. Thanks for the innovation. The Liberty² system is brilliant.”

Dr. Tobias Neuhann Ophthalmologikum, Munich

“The Liberty² optics with the trifocal array is just great. The combination options of the two lenses provide a high degree of adaptability to refractive situations. The handling and safety of the system are convincing.”

Prof. Dr. Gangolf Sauder Chief Physician at the Charlottenklinik for Ophthalmology, Stuttgart

“At the David J Apple Laboratory at the Heidelberg University Hospital, Department of Ophthalmology, we examined the Liberty² optics on the optical bench. In so doing, we found that there are no compromises in terms of optical quality due to the additional interfaces in comparison with conventional MIOLs. The advantage of the Liberty² optics is that the multifocality is always reversible and can be individually adapted to the needs of the patient.”

Prof. Dr. Ramin Khoramnia Heidelberg University Hospital – Department of Ophthalmology

“On the one hand, I see the major benefits of the Liberty² system in the possibility to also use slightly different additions for near vision in each eye in order to achieve an enlarged field of sharp near vision, such as for individual distances from the computer and closer reading material. On the other, besides being reversible at any time, this system also offers the new option of adapting the additional near vision correction again at a later point in time.”

Dr. Peter Bäumges Ophthalmologists at Zentralplatz, Koblenz

“We performed an implantation on an ophthalmologist colleague with the Liberty². I can say that the system works very well, is individualized and reversible and patients are highly satisfied. It will be a key addition to our portfolio of premium IOLs moving forward.”

Dr. Christoph Binder Schwarzwald Eye Clinic, Schramberg

“Particularly noteworthy are the wide range and the option to combine additions for near vision of less than 3.0 or 3.5 diopters, meaning that corrections can be made to the patient’s satisfaction depending on the desired distance from their various displays. Reversibility is an aid for the surgeon in determining the indication for MIOLs. The combination options offer new possibilities for problem solving.”

Dr. Martin Dörner Clinic Bocholt – Center for Ophthalmic Surgery

“The concept convinced me. With Liberty², I am able to provide my patients with the best trifocal function currently available. The crucial advantage is that an exchange or upgrade is possible at any time in case of any kind of incompatibility or a future improvement in technology.”

Dr. Thomas Kohm Argus Ophthalmology Clinic, Karlsruhe

Trifocality in the sulcus through elevated phase shift

Liberty2 uses innovative EPS technology. This means: optimized image quality, minimized glistening and outstanding trifocal performance.(1)

Schematic drawing showing the utilization of constructive interferences for creating an intermediate peak through EPS technology

What the system offers

Both you as the surgeon and your patients benefit from the diverse optical combinations of two lenses. Liberty2 offers a wide range of highly customizable sphere and cylinder values as well as additions for near vision.

  • Sphere of -10 to +45 D
  • Cylinder of +1 to + 11 D
  • 3 additions to the AddOn
    EDOF (low addition)
    Trifocal (+2.25 D; +3.0 D)

With this comprehensive system performance, the optimum refractive solution can be found for virtually any patient, while achieving the desired level of spectacle independence.

Rüdiger Dworschak, a graduate engineer, founder and CEO of 1stQ, developed the dual lens system. He had the Liberty² implanted and has enjoyed a spectacle-free life ever since.

Who is Liberty2 suitable for?

Liberty² is implanted in refractive lens exchange (RLE) or cataract surgery. The dual lens system is suitable for people with advanced presbyopia from around 45 years of age who suffer greatly from an age-related deterioration in vision.

In particular, Liberty² is an appropriate and sustainable solution if patients find wearing varifocals burdensome or generally want to live much more independently of visual aids. Constantly fiddling with reading glasses or varifocals is a thing of the past after the implantation of the dual lens system. Affected individuals no longer have to deal with the annoyance of pressure points, fogged lenses or spectacles slipping during sporting activity. Aesthetic reasons can also play a role in the desire for spectacle independence. Presbyopes who feel limited by their visual aids get an opportunity to significantly improve their vision comfort and experience daily life largely independent of spectacles again.

What Liberty2 patients are saying

“I can finally pursue my hobbies freely again and enjoy my regained quality of life.”

Harald Sieder 66, restaurant owner

“I see better than I did before with my spectacles.”

Dr. Ute Grimm-Müller 62, dentist

“I am now completely independent of spectacles, which gives me back a quality of life that I had lost long ago.”

Peer Brämer 54, sales manager

“Everything comes together in razor-sharp vision completely without spectacles – brilliant!”

Thomas Vetter 58, graduate physicist

“The gain in quality of life is immense.”

Melanie Ostermaier 44, self-employed

“I could not have imagined it any better.”

Michael Heinold 56, tax advisor

Bright prospects for patients with Liberty2

Download further materials on Liberty2

Doctors brochure – Liberty²
Brochure for Doctors
Publication – Dual Lens Procedure
Is reversibility the future of trifocal IOLs?

Literature and references

(1) Palomino-Bautista C, Sánchez-Jean R, Carmona Gonzales D, Romero Domínguez M, Castillo Gómez A. Spectacle independence for pseudophakic patients – Experience with a trifocal supplementary add-on intraocular lens. Clin Ophthalmol. 2020; 14:1043–1054. (2) Gundersen KG, Potvin R. A review of results after implantation of a secondary intraocular lens to correct residual refractive error after cataract surgery. Clin Ophthalmol. 2017 Oct 3; 11: 1791-1796. doi: 10.2147/OPTH.S144675. eCollection 2017. (3) Gundersen KG, Potvin R. Refractive and visual outcomes after implantation of a secondary toric sulcus intraocular lenses. Clin Ophthalmol. 2020; 14:1337-1342. (4) McLintock C, McKelvie J, Apel A. Outcomes of 1stQ toric supplementary intraocular lenses for residual astigmatic refractive error in pseudophakic eyes. Presented at the RANZCO Congress in 2019, Sydney, Australia. Clin Exp Opthalmol. 2019; 47:Suppl. 1:46. (5) Harrisberg B. Comparison of refractive and visual outcomes in cataract patients implanted with either premium primary IOLs or with dual implantation approach. Presented in the RANZCO NSW Congress in 2020, Newcastle, NSW, Australia. (6) Hassenstein A, Niemeck F, Giannakakis K, Klemm M. [Toric addon intraocular lenses for correction of high astigmatism after pseudophakic keratoplasty]. Ophthalmologe. 2017 Jun;114(6):549-555. (7) Reiter N, Werner L, Guan J, Li J, Tsaousis KT, Mamalis N, Srinivasan S. Assessment of a new hydrophilic acrylic supplementary IOL for sulcus fixation in pseudophakic cadaver eyes. Eye (Lond). 2017 May;31(5):802-809. doi: 10.1038/eye.2016.310. Epub 2017 Jan 20. (8) McLintock CA, McKelvie J, Gatzioufas Z, Wilson JJ, Stephensen DC, Apel AJG. Outcomes of toric supplementary intraocular lenses for residual astigmatic refractive error in pseudophakic eyes. Int Ophthalmol. 2019;39(9):1965‐1972. (9) Labuz G, Auffarth GU, Knorz MC, Son H-S, Yildirim TM, Khoramnia R. Trifocality Achieved Through Polypseudophakia: Optical Quality and Light Loss Compared With a Single Trifocal Intraocular Lens. (David J. Apple Center for Vision Research, Department of Ophthalmology, University Hospital Heidelberg, Heidelberg, Germany and Medical Faculty Mannheim of the University of Heidelberg, Mannheim, Germany) J Refract Surg. 2020;36(9):570-577. (10) Presbyopia Correcting IOLs for Phakic & Pseudophakic Eyes. EPS Technology: A Special Concept with Multiple Applications. Eurotimes Suppl. February 2020.