Try our beta test site
IMPORTANT: Listing of a study on this site does not reflect endorsement by the National Institutes of Health. Talk with a trusted healthcare professional before volunteering for a study. Read more...

Trying a New Device for Performing Capsulorhexis in Cataract Surgery Surgery

The recruitment status of this study is unknown. The completion date has passed and the status has not been verified in more than two years.
Verified August 2011 by Ziv Hospital.
Recruitment status was:  Enrolling by invitation
Information provided by:
Ziv Hospital Identifier:
First received: July 13, 2011
Last updated: August 2, 2011
Last verified: August 2011

During cataract operations a capsulorhexis is being performed. This is done in order to enable the removal of lens material while keeping the capsule intact in order to put inside the lens capsule an artificial intra ocular lens.

The capsulorhexis must be round and with regular edge and no tears. While performing a cataract surgery we use phako emulsification machine that sends an ultrasonic wave that creaks the lens nucleus and at the same time irrigates the anterior chamber of the eye and sucks the fluid and the lens material of the creaked lens.

The round shape and the regularity of the capsulorhexis are a must in these surgeries since the lens capsule must stay intact and stable in order to enable the phacoemulsification and the implant of the artificial lens.

Today capsulorhexis are done with a bent needle or with special forceps; the act of capsulorhexis is delicate, sometime un predicted and difficult to teach. The learning curve is relatively long and difficult.

The proposed device enables a capsulorhexis which is round and has regular edges, done almost automatically and is predicted. The learning curve is short and easy. The capsulorhexis is done through the original operating wound with no need to widen it.

Condition Intervention Phase
Eye Disease
Device: surgery
Phase 1

Study Type: Interventional
Study Design: Intervention Model: Single Group Assignment
Masking: Open Label
Official Title: The Efficiency of a New Device for Performing Capsulorhexis in Cataract Surgery

Resource links provided by NLM:

Further study details as provided by Ziv Hospital:

Primary Outcome Measures:
  • capsulorhexis must be round and with regular edge and no tears [ Time Frame: Post operative follow up will be done as usually, one day, one week, 3 weeks and six weeks after operation ]
    As the title of this experiment:"The trying a new device for performing capsulorhexis in cataract surgery".Becuase we are not changing the protocol of Cataract surgery,the outcome measure of this experiment is the efficiency of this device, the safety and the simplicity of the use the device inorder to give a simple and safe solution for capsulorhexis.Therefor the outcome measure will be IOL stability, the shape of capsulorexis and intra ocular post operative inflammation if will occur. The trail is not comparative.

Estimated Enrollment: 20
Study Start Date: July 2011
Estimated Study Completion Date: December 2011
Estimated Primary Completion Date: December 2011 (Final data collection date for primary outcome measure)
Intervention Details:
    Device: surgery
    cataract surgery
    Other Name: V.R.hexis-1
Detailed Description:

Planed Procedure

20 patients will be tested in this trail.

Consecutive patients that have senile cataract will be examined preoperatively as is done usually and the data of the examination will be collected/ a special attention will be given to the type of cataract and lens stability.

Systemic diseases will not be considered as exclusion criteria.

Patients with dens or mature cataract will be excluded.

Patients will be explained about the new device and those who will agree will sign a consent form.

During the cataract surgery all steps will be done as usually except of the capsulorhexis which will be done by using the new device.

The capsulorhexis will be photographed for further evaluation by a microscope camera.

After the operation the surgeon will record his impression about the convenience of using the new device, the shape and form of the capsulorhexis and its stability and any other relevant information.

Post operative follow up will be done as usually, one day, one week, 3 weeks and six weeks after operation. The results of those examinations will be recorded and collected with special attention of IOL stability, the shape of capsulorhexis and intra ocular post operative inflammation if will occur.

The data, including the surgeons' comments, shape and form of capsulorhexis IOL stability and the rest will be collected and processed.

In case in which the use of the device will not perform a round and regular capsulorhexis, or instability of the capsule will occur or a un predicted intraocular inflammation will be seen the trail will be stopped immediately


Ages Eligible for Study:   20 Years to 90 Years   (Adult, Senior)
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   Yes

Inclusion Criteria:

  • senile cataract

Exclusion Criteria:

  • dens or mature cataract trauma congenital instability of the lens(phacodonesis,TXF)
  Contacts and Locations
Choosing to participate in a study is an important personal decision. Talk with your doctor and family members or friends about deciding to join a study. To learn more about this study, you or your doctor may contact the study research staff using the Contacts provided below. For general information, see Learn About Clinical Studies.

Please refer to this study by its identifier: NCT01396967

Ziv Medical Center
Zefat, Israel
Sponsors and Collaborators
Ziv Hospital
Principal Investigator: Joseph Pikkel, Md Ziv Medical Center Sefat Israel
  More Information

Responsible Party: Joseph Pikkel MD, Ziv Hospital Identifier: NCT01396967     History of Changes
Other Study ID Numbers: ZIV-0065-10
Study First Received: July 13, 2011
Last Updated: August 2, 2011

Keywords provided by Ziv Hospital:

Additional relevant MeSH terms:
Eye Diseases
Lens Diseases processed this record on May 25, 2017