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Evidence-based medicine (EBM) has markedly promoted the development of ophthalmology.Glaucoma clinical trials have been developed rapidly. Clinical trial papers have been tremendously increasing in the decade, but unhealthy tendency deviating from the nature of EBM---"conscientious, explicit and judicious" has come into notice by the medical society. It is the time to develop patient based medicine, combining with experience-based, experiment-based, ethics-based, economy-based medicine. Only face up to the fundamental problems can we avoid misleading clinicians and provide better health care of affordable, accessible, accountable medical service for patients. This is the intrinsic value of evidence-based medicine.