Status:
COMPLETED
Test of QLS Device to Detect Early Cataracts
Lead Sponsor:
National Eye Institute (NEI)
Conditions:
Cataract
Healthy
Eligibility:
All Genders
Brief Summary
This study will test the reliability of an instrument called the Quasi Elastic Laser Scattering Device (QLS) in detecting early changes in cataract formation. Surgery is currently the only treatment ...
Detailed Description
Recently, a device has been created to determine molecular interactions that occur in the nucleus of the lens, called Quasi Elastic Laser Scattering Device (QLS). Preliminary studies have shown its po...
Eligibility Criteria
Patients 18 years or older will be admitted to this study. There will be no gender or sex bias in the recruitment.
Three subjects who are normal volunteers below age 40 and three subjects who are normal volunteers above age 40 will be recruited. These normal volunteers should have clear lenses with LOCS II clinical score for nuclear opalescence of 0.5 or less.
In addition, 3 subjects who have early nuclear cataract (LOCS II/Nuclear opalescence -2) will also be recruited for the study.
QLS data will be obtained on each eye of the normal and cataractous subjects in the nuclear region.
No patients who have uveitis, glaucoma and who are thought to be at risk for an adverse reaction to pupil dilation, or have a history of allergic reaction to one of the dilating agents that will be used.
Key Trial Info
Start Date :
September 1 1997
Trial Type :
OBSERVATIONAL
End Date :
August 1 2000
Estimated Enrollment :
10 Patients enrolled
Trial Details
Trial ID
NCT00001617
Start Date
September 1 1997
End Date
August 1 2000
Last Update
March 4 2008
Active Locations (1)
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1
National Eye Institute (NEI)
Bethesda, Maryland, United States, 20892