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Discover 20,904 clinical trials near Philadelphia, Pennsylvania. Find research studies in your area.
Showing 20741-20760 of 20,904 trials
NCT00000148
To assess the long-range outcomes of sequences of interventions involving trabeculectomy and argon laser trabeculoplasty in eyes that have failed initial medical treatment for glaucoma.
NCT00000147
To assess the beneficial and adverse effects of corticosteroid treatment for optic neuritis. To determine the natural history of vision in patients who suffer optic neuritis. To identify risk factors for the development of multiple sclerosis in patients with optic neuritis.