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CataractZ8_CCINCT04082273

Comparison of Femto-laser and Manually Created Clear Corneal Incisions During Cataract Surgery

A study testing Femtosecond Laser for Cataract Surgery and Conventional Cataract Surgery in people with Cataract, run by Ziemer Ophthalmic Systems AG at 1 site in Switzerland.

Completed

Finished. The study has ended and is not enrolling. Results may be posted on the official record.

Official record
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Trial summary

The aim of this study is to test the hypothesis, that in terms of Surgically Induced corneal Astigmatism (SIA), Higher-order Aberrations (HOA), and wound geometry the femtosecond clear corneal incisions (CCIs) created during cataract surgery are not inferior when compared to manual CCIs. Read more about this study

Who is it for?
Ages 40 years and older
Conditions the study is for
Cataract
What is being tested?
Femtosecond Laser for Cataract Surgery and Conventional Cataract Surgery
Type of treatment
Medical device
Could I receive a placebo?
No, everyone receives an active treatment
How many people
80 participants
Where
1 siteSwitzerland
Study dates
26 Aug 2019to 15 Jul 2024
Phase
Interventional
Are there results?
None posted in the registry

Key requirements

Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.

  • Ages 40 years and older
  • All sexes
  • No healthy volunteers
  • Adult, Older adult

Who may be able to join

  • Eligible to undergo cataract extraction by phacoemulsification with primary intraocular lens implantation
  • Able to co-operate with the docking system for the femtosecond laser
  • Clear corneal media
  • 40 years of age or older
  • Willing and able to return for scheduled follow-up examinations

Who cannot join

  • Minimal and maximal K-values of the central 3mm zone that differ by more than 5D on a keratometric map of the cornea
  • Maximum K-value that exceeds 58.D
  • Minimal K-value of less than 37.D
  • Corneal disease or pathology, such as corneal scaring or opacity, that precludes transmission of laser wavelength or that distorts laser light
  • Poorly dilating pupil or other defect of the pupil that prevents the iris from adequate retraction peripherally
  • Manifest Glaucoma+OHT (ocular hypertension), pseudoexfoliation
Show all 15Show fewer
  • Previous intraocular or corneal surgery of any kind, including any type of surgery for either refractive or therapeutic purposes in either eye
  • Known sensitivity to planned concomitant medications
  • History of lens or zonular instability
  • Keratoconus or keratectasia
  • Immune compromised or diagnosis of connective tissue disease, clinically significant atopic disease, insulin dependent diabetes mellitus, autoimmune diseases, ocular herpes zoster or simplex, endocrine diseases, lupus, RA, collagenosis and other acute or chronic illnesses that increases the risk to the subject or confounds the outcomes of this study, in the opinion of the study Pl.
  • Anterior chamber depth (ACD) < 1.5 mm or ACD > 4.8 mm as measured from the corneal endothelium.
  • Extensive corneal scarring, pterygium
  • Developmental disability or cognitive impairment (would preclude adequate comprehension of the IC form and/or the ability to record the study measurements)
  • Concurrent participation in another ophthalmological clinical study

Trial locations and contacts

1 site in 1 country.

Switzerland1 site
  • Augenklinik ORASIS AG

    Reinach, Canton of Aargau, 5734

Other trials in Switzerland

About this study

Official title: A Single Center, Randomized Control Study to Compare Efficacy and Safety of Femto-laser Created Clear Corneal Incisions with Manually Created Clear Corneal Incisions During Cataract Surgery

The aim of this study is to test the hypothesis, that in terms of Surgically Induced corneal Astigmatism (SIA), Higher-order Aberrations (HOA), and wound geometry the femtosecond clear corneal incisions (CCIs) created during cataract surgery are not inferior when compared to manual CCIs.

The potential risks associated with application of the femtosecond laser in this study are no greater or in most cases less than those associated with the standard manual cataract surgical procedure, and the potential benefits (such as precision and reproducibility) are greater than with the standard manual cataract surgery. Therefore, the risk-to-benefit ratio is very low, such that the potential benefits for a subject participating in this study exceed the potential risks

Conditions
Cataract
Being tested
Femtosecond Laser for Cataract Surgery, Conventional Cataract Surgery
Keywords
Induced corneal Astigmatism, Clear corneal incisions, Femto-laser
Medical subject headings
Cataract

What participants receive

What participants receive. In a randomised study each person is assigned to one group by chance.

  • Femtosecond Laser for Cataract SurgeryDevice

    Cataract Surgery on study eye according to conventional procedure, with the exception of three steps (Capsulotomy, Lens Fragmentation and Clear Corneal Incisions) which are performed with a Femtosecond Laser in the laser treatment group. Equipment uesd for measurements is the same for both groups and in line with the normal equipment used for the conventional cataract treatment

  • Conventional Cataract SurgeryOther

    Cataract surgery will be performed conventionally, this means the clear corneal incisions will be performed manually by a blade, the capsulorhexis will be performed manually by a hook, and the lens extraction will be done by phacoemulsification

Study groups in NCT04082273
Study groupRoleWhat they receive
Femtosecond Laser for Cataract SurgeryExperimentalCapsulotomy, lens fragmentation and Clear Corneal Incisions with FEMTO LDV Z8, followed by ultrasound phacoemulsification and IOL implantation.
Receives: Device: Femtosecond Laser for Cataract Surgery
Conventional Cataract SurgeryActive comparatorClear Corneal Incisions, conventional capsulorhexis and ultrasound phacoemulsification and IOL implantation. Control treatment where the clear corneal incisions and capsulorhexis are performed manually and the lens fragmentation is performed with the phacoemulsification device.
Receives: Other: Conventional Cataract Surgery

What is being measured

The primary outcome is the main question the study is designed to answer.

  1. Change from baseline (pre-operative) Surgically Induced corneal Astigmatism (SIA) measured by means of corneal topography Galilei G2

    Measured: Baseline = Pre-operative, Follow-up = 12 days, 4 weeks and 6 weeks after surgery

Secondary outcomes (8)
  1. Change from baseline (pre-operative) Higher-order aberrations (HOAs) by means of aberrometry using Galilei G2

    Measured: Baseline = Pre-operative, Follow-up = 12 days, 4 weeks and 6 weeks after surgery

  2. Central corneal thickness (CCT)

    Measured: Baseline = Pre-operative, Follow-up = 1 day, 12 days, 4 weeks and 6 weeks after surgery

  3. Endothelial cell density (ECD)

    Measured: Baseline = Pre-operative, Follow-up = 1 day, 12 days, 4 weeks and 6 weeks after surgery

  4. Effective Phacoemulsification Time (EPT)

    Measured: Baseline = Treatment day

  5. Ultrasound total time (US)

    Measured: Baseline = Treatment day

  6. Achieved CCI architecture

    Presence of Descemet membrane detachment, posterior and anterior wound gape, if present size) will be analyzed on OCT images

    Measured: 1 day postoperative and 12 days postoperative

  7. Intra- and post-operative CCI related complications rate

    Measured: Baseline = Treatment day, Follow-up = 1 day, 12 days, 4 weeks and 6 weeks after surgery

  8. FEMTO LDV Z8 OCT auto - detection accuracy

    Analyzed on intra-operative Z8 OCT images

    Measured: Baseline = Treatment day

Timeline

From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.

  1. First posted9 Sep 2019
  2. Study start26 Aug 2019
  3. Primary completion15 Jul 2024
  4. Study completion15 Jul 2024

Resources

More details

For doctors and researchers: how the study is designed, who runs it, and its registry IDs.

Study design
Study type
Interventional
Phase
Phase N/A
Primary purpose
Treatment
Allocation
Randomised
Intervention model
Parallel groups
Masking
None (open label)
Enrolment
80 participants (actual)
IDs, dates and publications
ClinicalTrials.gov ID
NCT04082273
Sponsor's protocol ID
CPFEM-0005-CH
Acronym
Z8_CCI
Status last verified
Jul 2021
First submitted
2 Sep 2019
Last updated
4 Nov 2024
Results posted
No
Data monitoring committee
No
FDA-regulated drug
No
FDA-regulated device
No
Individual data sharing
No

Publications

  • Brian G, Taylor H. Cataract blindness--challenges for the 21st century. Bull World Health Organ. 2001;79(3):249-56. Epub 2003 Jul 7.

    PubMed 11285671
  • Nagy Z, Takacs A, Filkorn T, Sarayba M. Initial clinical evaluation of an intraocular femtosecond laser in cataract surgery. J Refract Surg. 2009 Dec;25(12):1053-60. doi: 10.3928/1081597X-20091117-04.

    PubMed 20000286
  • He L, Sheehy K, Culbertson W. Femtosecond laser-assisted cataract surgery. Curr Opin Ophthalmol. 2011 Jan;22(1):43-52. doi: 10.1097/ICU.0b013e3283414f76.

    PubMed 21150606
  • Trikha S, Turnbull AM, Morris RJ, Anderson DF, Hossain P. The journey to femtosecond laser-assisted cataract surgery: new beginnings or a false dawn? Eye (Lond). 2013 Apr;27(4):461-73. doi: 10.1038/eye.2012.293. Epub 2013 Feb 1.

    PubMed 23370418
  • Chang JS, Chen IN, Chan WM, Ng JC, Chan VK, Law AK. Initial evaluation of a femtosecond laser system in cataract surgery. J Cataract Refract Surg. 2014 Jan;40(1):29-36. doi: 10.1016/j.jcrs.2013.08.045. Epub 2013 Nov 22.

    PubMed 24269139
  • Grewal DS, Basti S. Comparison of morphologic features of clear corneal incisions created with a femtosecond laser or a keratome. J Cataract Refract Surg. 2014 Apr;40(4):521-30. doi: 10.1016/j.jcrs.2013.11.028. Epub 2014 Feb 22.

    PubMed 24568722
  • Baig NB, Cheng GP, Lam JK, Jhanji V, Chong KK, Woo VC, Tham CC. Intraocular pressure profiles during femtosecond laser-assisted cataract surgery. J Cataract Refract Surg. 2014 Nov;40(11):1784-9. doi: 10.1016/j.jcrs.2014.04.026. Epub 2014 Sep 24.

    PubMed 25261391
  • Reddy KP, Kandulla J, Auffarth GU. Effectiveness and safety of femtosecond laser-assisted lens fragmentation and anterior capsulotomy versus the manual technique in cataract surgery. J Cataract Refract Surg. 2013 Sep;39(9):1297-306. doi: 10.1016/j.jcrs.2013.05.035.

    PubMed 23988242
  • Nagy ZZ, Kranitz K, Takacs AI, Mihaltz K, Kovacs I, Knorz MC. Comparison of intraocular lens decentration parameters after femtosecond and manual capsulotomies. J Refract Surg. 2011 Aug;27(8):564-9. doi: 10.3928/1081597X-20110607-01. Epub 2011 Jun 20.

    PubMed 21688765
  • Friedman NJ, Palanker DV, Schuele G, Andersen D, Marcellino G, Seibel BS, Batlle J, Feliz R, Talamo JH, Blumenkranz MS, Culbertson WW. Femtosecond laser capsulotomy. J Cataract Refract Surg. 2011 Jul;37(7):1189-98. doi: 10.1016/j.jcrs.2011.04.022.

    PubMed 21700099
  • Palanker DV, Blumenkranz MS, Andersen D, Wiltberger M, Marcellino G, Gooding P, Angeley D, Schuele G, Woodley B, Simoneau M, Friedman NJ, Seibel B, Batlle J, Feliz R, Talamo J, Culbertson W. Femtosecond laser-assisted cataract surgery with integrated optical coherence tomography. Sci Transl Med. 2010 Nov 17;2(58):58ra85. doi: 10.1126/scitranslmed.3001305.

    PubMed 21084720
  • Pajic B, Vastardis I, Gatzioufas Z, Pajic-Eggspuehler B. First experience with the new high-frequency femtosecond laser system (LDV Z8) for cataract surgery. Clin Ophthalmol. 2014 Dec 8;8:2485-9. doi: 10.2147/OPTH.S72983. eCollection 2014.

    PubMed 25525326
  • Abell RG, Kerr NM, Vote BJ. Femtosecond laser-assisted cataract surgery compared with conventional cataract surgery. Clin Exp Ophthalmol. 2013 Jul;41(5):455-62. doi: 10.1111/ceo.12025. Epub 2012 Dec 10.

    PubMed 23078347
  • Ferreira TB, Ribeiro FJ, Pinheiro J, Ribeiro P, O'Neill JG. Comparison of Surgically Induced Astigmatism and Morphologic Features Resulting From Femtosecond Laser and Manual Clear Corneal Incisions for Cataract Surgery. J Refract Surg. 2018 May 1;34(5):322-329. doi: 10.3928/1081597X-20180301-01.

    PubMed 29738588
  • Liu YC, Wilkins M, Kim T, Malyugin B, Mehta JS. Cataracts. Lancet. 2017 Aug 5;390(10094):600-612. doi: 10.1016/S0140-6736(17)30544-5. Epub 2017 Feb 25.

    PubMed 28242111

Questions about this trial

What is this clinical trial studying?

A study testing Femtosecond Laser for Cataract Surgery and Conventional Cataract Surgery in people with Cataract, run by Ziemer Ophthalmic Systems AG at 1 site in Switzerland.

The full registered description is in the About this study section and the official record.

Who may be eligible to take part?

The sponsor lists 5 inclusion and 15 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.

Is this clinical trial currently recruiting?

The record says: finished, as of the sponsor's last update on 4 Nov 2024. Status can change between updates, so confirm with the study contact before making plans.

Where is the study taking place?

The record lists 1 site in Switzerland. Whether a site is taking part right now should be confirmed with that site. See every site.

What are the possible benefits and risks?

They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.

Are results available for this study?

The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.

How can a doctor refer a patient or contact the research team?

The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.

What does the primary outcome measure?

Change from baseline (pre-operative) Surgically Induced corneal Astigmatism (SIA) measured by means of corneal topography Galilei G2 (time frame: Baseline = Pre-operative, Follow-up = 12 days, 4 weeks and 6 weeks after surgery). It is what the study was designed to measure, not a finding.

Where can I read the original study information?

On the ClinicalTrials.gov record for NCT04082273, which also lists 16 linked publications.

Does a listing mean the treatment is approved or proven to work?

No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.

How often is this information updated?

AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 4 Nov 2024.

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