Test of QLS Device to Detect Early Cataracts

Launched by NATIONAL EYE INSTITUTE (NEI) · Dec 9, 2002

Keywords

ClinConnect Summary

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 potential in the detection of the earliest changes occurring in cataract, at the stage where anticataract treatment would theoretically be most effective in reversing, delaying or preventing cataracts. A new miniaturized version of this device has been developed by NASA using low energy lasers and offered for further development and testing at the NEI. We therefore propose to conduct a preliminar...

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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.