Comparison of Scheimpflug Photos of the Crystalline Lens in Patients Who Have Undergone Vitrectomy Surgery and Controls

July 25, 2016 updated by: Rhonda Weeks, Barnes Retina Institute

Comparison of Scheimpflug Photos of the Crystalline Lens in Patients Who Have Undergone Vitrectony Surgery and Controls

Progression of nuclear sclerotic cataract after pars plana vitrectomy has been recognized for many years The mechanism for the rapid progression of nuclear sclerotic cataract remains unclear. The objective of this trial is to evaluate and compare the level and progression of cataract advancement in controls versus eyes that have undergone 20-gauge pars plana vitrectomy and 25-gauge pars plana vitrectomy.

Study Overview

Status

Completed

Conditions

Intervention / Treatment

Detailed Description

Approximately 105 patients will be recruited to obtain 35 control eyes that have not had pars plana vitrectomy and 35 eyes who will have undergone 20-gauge pars plana vitrectomy and 35 eyes will have undergone 25-gauge pars plana vitrectomy. Scheimpflug crystalline lens photographs will be taken for evaluation of level and progression of cataract development.

Study Type

Observational

Enrollment (Actual)

49

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Locations

  • United States
    • Missouri
      • St. Louis, Missouri, United States, 63110
        • Barnes Retina Institute

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Ages Eligible for Study

18 years and older (Adult, Older Adult)

Accepts Healthy Volunteers

No

Genders Eligible for Study

All

Sampling Method

Non-Probability Sample

Study Population

patients undergoing vitrectony surgery and controls

Description

Inclusion Criteria:

  • phakic eyes of patients that are scheduled to undergo pars plana vitrectomy,
  • controls will be phakic eyes of patients that have not undergone andy kind of intraocular surgery,
  • age 18 and older

Exclusion Criteria:

  • any eye that is pseudophakic,
  • has had previous vitreoretinal surgery,
  • has had previous intravitreal injection,
  • previous intraocular inflammatory condition such as uveitis,
  • previous irradiation,
  • any patient with a history of ocular malignancy,
  • history of infectious intraocular condition

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

  • Observational Models: Case-Only
  • Time Perspectives: Prospective

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

Barnes Retina Institute

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start

November 1, 2006

Primary Completion (Actual)

October 1, 2010

Study Completion (Actual)

October 1, 2010

Study Registration Dates

First Submitted

November 30, 2006

First Submitted That Met QC Criteria

November 30, 2006

First Posted (Estimate)

December 4, 2006

Study Record Updates

Last Update Posted (Estimate)

July 27, 2016

Last Update Submitted That Met QC Criteria

July 25, 2016

Last Verified

July 1, 2016

More Information

Terms related to this study

Keywords

Additional Relevant MeSH Terms

Other Study ID Numbers

  • 06-1016

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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