ELECTRONIC VISION SCREENER APPLICATION: EXAMINING EYE FUNCTIONS, EMERGENCY ROOM MANUFACTURER / REFERENCE KEYSTONE VIEW: 1155 VS-V STANDARD VISION SCREENER ADDITIONAL FEATURES: TYPE: ELECTRONIC; PHYSICAL CHARACTERISTICS: PORTABLE; POWER: 110/220VCA; FREQUENCY: 60 HZ; CAPACITY: BINOCULAR; DISPLACEMENT: HORIZONTAL/VERTICAL; ADJUSTED RANGE: FOR CHILDREN: 20/30, 20/40, 20/50; ADJUSTED RANGE FOR ADULTS: 20/200, 20/70, 20/50, 20/40, 20/30, 20/20; PERIMETER FUNCTION AND COLOR PERCEPTION; DISTANCE OPTION: FAR AND NEAR; ACCESSORIES: HIGH VISUAL PRECISION BLADE WITH SIX EXAMS; MICRO-DIGITAL REMOTE CONTROL; PROTECTIVE COVER; SPARE TISSUES FOR FRONT SUPPORT; TISSUES FOR CLEANING LENSES; SPARE LAMP