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Discover 20,428 clinical trials near North Carolina. Find research studies in your area.
Showing 19921-19940 of 20,428 trials
NCT00349440
The purpose of this study is to evaluate the effect of topical cyclosporine ophthalmic solution 0.05% (Restasis, Allergan) on the signs and symptoms of dry eye in patients undergoing LASIK or photorefractive keratectomy (PRK).
NCT00603707
Our null hypothesis states that the two techniques (Sitzmarks radioopaque markers and SmartPill) are equivalent and is demonstrated if the study population shows a correlation of 0.7 or higher.
NCT00001132
The purpose of this study is to see if adding 1 drug to an anti-HIV drug combination early in treatment against HIV can lower the viral load (amount of HIV in the blood) to a level so low that it cannot be measured (undetectable). The drug that will be added to a treatment is abacavir (ABC). Many patients who take 3 anti-HIV drugs together are able to achieve very low viral loads, for example, viral loads below 50 copies/ml. However, some patients taking only 3 drugs are not able to achieve a viral load this low. Doctors hope that, by adding the drug ABC to a current treatment, a viral load below 50 copies/ml can be achieved. Doctors would like to find out if it is effective to start patients on 3 drugs and then add another drug (treatment intensification) if the treatment is not working as well as hoped.