Labzee Auto Refractometer ensures fast, precise eye exams with vertex distances of 0.0, 12.0, 13.5, and 15.0 mm, spherical power from minus 25D to plus 22D, and cylindrical power from minus 10D to plus 10D. It features a 10.4-inch TFT touchscreen and a built-in thermal printer ideal for clinics and research. https://www.labzee.com/auto-refractometer/bzar-512