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

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ClinicalTrials.gov Identifier: NCT00406263
Recruitment Status : Completed
First Posted : December 4, 2006
Last Update Posted : July 27, 2016
Sponsor:
Information provided by (Responsible Party):
Rhonda Weeks, Barnes Retina Institute

November 30, 2006
December 4, 2006
July 27, 2016
November 2006
October 2010   (Final data collection date for primary outcome measure)
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Complete list of historical versions of study NCT00406263 on ClinicalTrials.gov Archive Site
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Comparison of Scheimpflug Photos of the Crystalline Lens in Patients Who Have Undergone Vitrectomy Surgery and Controls
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.
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.
Observational
Observational Model: Case-Only
Time Perspective: Prospective
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Non-Probability Sample
patients undergoing vitrectony surgery and controls
Nuclear Sclerotic Cataract
Procedure: Scheimpflug crystalline lens photographs
scheimpflug photographs
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*   Includes publications given by the data provider as well as publications identified by ClinicalTrials.gov Identifier (NCT Number) in Medline.
 
Completed
49
105
October 2010
October 2010   (Final data collection date for primary outcome measure)

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
Sexes Eligible for Study: All
18 Years and older   (Adult, Older Adult)
Yes
Contact information is only displayed when the study is recruiting subjects
United States
 
 
NCT00406263
06-1016
No
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Rhonda Weeks, Barnes Retina Institute
Barnes Retina Institute
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Principal Investigator: Nancy M Holekamp, MD Barnes Retina Institute
Barnes Retina Institute
July 2016