National Guideline Clearinghouse (NGC) is a public database of evidence-based clinical practice guidelines and related documents. The NGC currently houses over 2700 clinical practice guidelines. It is maintained as a public resource by the Agency for Healthcare Research and Quality (AHRQ) of the U.S. Department of Health and Human Services. The NGC aims to provide health professionals, health care providers, health plans, integrated delivery systems, purchasers and others an accessible mechanism for obtaining objective, detailed information on clinical practice guidelines and to further their dissemination, implementation and use. The database is updated weekly with new and revised guidelines. The currency of all guidelines is verified annually through NGC's Annual Verification process.
The current criteria for inclusion of clinical practice guidelines in NGC are in effect through May 2014. New inclusion criteria, based on standards released by the Institute of Medicine (IOM) in 2011, go into effect June 2014.
The AOA Evidence-Based Optometry Committee has begun the diligent work of revising the 20 optometric clinical practice guidelines to adhere to IOM standards, and thereby meet the inclusion criteria of the NGC.