Posterior Assisted Levitation of Dropped Nucleus (PAL)

The safety and scientific validity of this study is the responsibility of the study sponsor and investigators. Listing a study does not mean it has been evaluated by the U.S. Federal Government. Read our disclaimer for details. Identifier: NCT00974844
Recruitment Status : Completed
First Posted : September 10, 2009
Last Update Posted : August 24, 2011
Information provided by (Responsible Party):
Jamshed Ahmed, Dow University of Health Sciences

Brief Summary:
Dropping of nucleus is a common complication during cataract extraction by phacoemulsification. The investigators describe a new technique to retrieve the dropped nucleus by using an instrument called Pars Plana Levitator (ASICO-LLC, USA).

Condition or disease

Detailed Description:
Upon recognition of posterior capsular rupture and dropping of nucleus phaco prob will be withdrawn, status of the nucleus will be visualized by posterior segment non contact lens and if the nucleus found floating, pars plana levitator will be introduced through temporal pars plana, its prongs will be opened and nucleus will be grasped between prongs. Nucleus will be lifted up till the anterior chamber where phacoemulsification will be performed in a usual manner and a posterior chamber intraocular lens will be implanted if possible in the remaining bag.

Study Type : Observational
Estimated Enrollment : 14 participants
Observational Model: Case-Only
Time Perspective: Prospective
Official Title: Posterior Assisted Levitation by Pars-Plana Levitator
Study Start Date : January 2009
Actual Primary Completion Date : March 2011
Actual Study Completion Date : March 2011

Resource links provided by the National Library of Medicine

MedlinePlus related topics: Cataract
U.S. FDA Resources

Information from the National Library of Medicine

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Ages Eligible for Study:   30 Years to 90 Years   (Adult, Senior)
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   No
Sampling Method:   Non-Probability Sample
Study Population
Patients who had dropped nucleus during phacoemulsification

Inclusion Criteria:

  • Patients during cataract surgery whose nucleus will be dropped during phacoemulsification

Exclusion Criteria:

  • Completely dropped nucleus touching the posterior pole

Information from the National Library of Medicine

To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.

Please refer to this study by its identifier (NCT number): NCT00974844

Eye Unit III, Lyari General Hospital , Dow university of Health Sciences
Karachi, Sindh, Pakistan, 74200
Sponsors and Collaborators
Dow University of Health Sciences
Principal Investigator: Shahid Wahab, FCPS Dow University of Health Sciences

Responsible Party: Jamshed Ahmed, Assistant Professor, Dow University of Health Sciences Identifier: NCT00974844     History of Changes
Other Study ID Numbers: DUHS-SWJA
First Posted: September 10, 2009    Key Record Dates
Last Update Posted: August 24, 2011
Last Verified: September 2009

Keywords provided by Jamshed Ahmed, Dow University of Health Sciences:
posterior assisted levitation
Pars Plana
Dropped nucleus
complication of

Additional relevant MeSH terms:
Lens Diseases
Eye Diseases