Nasolacrimal Duct Obstruction — Amniotic Membrane for Dacryocystorhinostomy
Citation(s)
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Miranda Anta S, Blanco Mateos G, Valverde Collar C [Dacryocystorhinostomy in adolescents and young adults]. Arch Soc Esp Oftalmol. 2011 Aug;86(8):243-6. doi: 10.1016/j.oftal.2010.12.014. Epub 2011 Jun 15. Spanish.
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Amniotic Membrane for External Dacryocystorhinostomy and Comparison of Success Rate With Conventional Surgery for Patients With Nasolacrimal Duct Obstruction
Interventional studies are often prospective and are specifically tailored to evaluate direct impacts of treatment or preventive measures on disease.
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Phase 4: Studies are done after the drug or treatment has been marketed to gather information on the drug's effect in various populations and any side effects associated with long-term use.
