The Used Zeiss Humphrey FDT Visual Field Analyzer Features: Clinically Validated Glaucoma Asymmetry Test Video Eye Monitoring Welch Allyn Frequency Doubling Technology In-Office Glaucoma Screener 35 Second Supra-Threshold Testing Up to 69 Stimuli to Characterize Visual Field Defects LCD Color Display Storage for up to One Million Exams Ability to Print Results to External Color Printer Welch Allyn Frequency Doubling Technology Tools to Characterize and Manage Glaucoma