Purpose:  To determine the relationship between ITC measured using AS-OCT and gonioscopy  Methods:  A retrospective chart review of gonioscopy and AS-OCT images (Casia SS-1000, Tomey, Nagoya, Japan) between September 2010 - August 2011. Eyes which had previous ocular surgery or intraocular injections were excluded. Age, sex, race, and Shaffer gonioscopy grade were recorded. 2D scan images were reviewed by 2 readers using proprietary software to determine the scleral spur location (SS) and the end of the angle opening (EAO) at…