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A volunteer subject with no known significant health problems who participates in research to test a new drug, device or intervention. These volunteers are recruited to serve as controls for patient groups. Healthy volunteers receive the same test, procedure, or drug the patient group receives.

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During the early phases (phases 1 and 2), researchers assess safety, side effects, optimal dosages and risks/benefits. In the later phase (phase 3), researchers study whether the treatment works better than the current standard therapy. They also compare the safety of the new treatment with that of current treatments. Phase 3 trials include large numbers of people to make sure that the result is valid. There are also less common very early (phase 0) and later (phase 4) phases. Phase 0 trials are small trials that help researchers decide if a new agent should be tested in a phase 1 trial. Phase 4 trials look at long-term safety and effectiveness, after a new treatment has been approved and is on the market.

Search Results 1-6 of 6 for Cataracts

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  1. Outcome Measures for Clinical Trials in Pediatric Eye Care and Strabismus

    Rochester, MN

  2. Artisan Aphakia Lens for the Correction of Aphakia in Children

    Rochester, MN

  3. Post Approval Study of the CyPass System in Patients with Primary Glaucoma Undergoing Cataract Surgery

    Jacksonville, FL

  4. Does The Dosage of Midazolam and Fentanyl Impact Patient Satisfaction after Cataract Surgery with Nurse Sedation?

    Jacksonville, FL

  5. Can Satisfaction with Conscious Sedation Validly Be Measured Immediately After Cataract Surgery?

    Jacksonville, FL

  6. Assessing Patient Satisfaction after Cataract Surgery with Monitored Anesthesia Care versus Nurse Sedation using the Iowa Satisfaction with Anesthesia Scale (ISAS)

    Jacksonville, FL

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