Details

The ClearChart 4P Polarized Digital Acuity System features a new polarized 24 inch, high resolution, LED backlit display, is lightweight, cool running, and long-lasting. The intuitive user interface, whether controlled from the easy-to-use infrared remote or via the Phoroptor® VRx Digital Refraction System, provides the best user experience of any digital acuity chart. The ClearChart 4P has additional features such as stereo testing, color vision testing, ETDRS testing, patient education images, and ability to import images and video. All ClearCharts are made in the USA. ClearChart 4P Optotypes: Standard: 17 Letter Set 8 Letter Set Sloan Tumbling E Landolt C O Landolt C HOTV Numbers Cyrillic Childrens: Kolt Children's Shapes Allen Pigassou (Hearing Impaired Chart) Osterberg Sheridan-Gardiner Lower Case Presentation: Single Line Double/ Same Double/ Decreasing Triple Same Triple Decreasing Quadruple Same Quadruple Decreasing Single Letter Column Column Uneven Other: Xcyl Crowding Dots Astigmatic "Wheel" T Fixation Dot Horizontal Disperity Vertical Disperity Worth 4 Dot Crowding Bar Suppression Red Green Filter EDTRS Contrast Sensitivity Patient Education Slides License Plate Color Vision testing (Color Blindness) Schober (color balance) Grid Maddox LED Light Inverse Black & White Polarized Charts: MKH Phoria Cyclophoria Test Vertical Coincidence Test Stereo Tests Stereo Balance Tests Polarized Muscle Tests Polarized Binocular Balance Tests Mallet Test Horizontal and Vertical Coincidence Test