Auto Ref-Keratometer with High Resolution Touch Screen PRK-6000 by Potec   Refraction & Keratometry Measurement   The PRK-6000 provides and extensive dioptric meaurement range (-25D to +22D), and the radius of curvature for keratometry is 5.0mm to 10.2mm. Easy alignment and friendly operation allows you to measure the refraction and keratometry in sequence, and the results can be validated immediately. Due to its easy alignment and friendly operation you can measure the refraction and keratometry in a sequence and the results can be checked all at once.      Peripheral Karatometry   Peripheral corneal curvatures can be measured by having the examinee look at the peripheral eye fixation lamps. Measuring the corneal periphery will help you examine irregular astigmatism, and also determine a better fitting for a contact lens.   Introduction of various meaurement systems of the PRK-6000 enables location of even minor eye disorders.      Intutive Diameter Meaurement   Using the freeze function, measurement of the diameter of the cornea, pupil or hard contact lenses worn by the patient can be per-formed. By simply touching and dragging the screen with your finger measurements are exactly calculated.      TFT-LCD with Touch Screen   By adopting high resolution VGA TFT-LCD with Touch Screen function, we virtually removed all input keys except the measurement button on the Joystick and Chinrest control switches. Tests are preformed rapidly and conveniently by simply pressing a button or the icon indicated on the screen.      Instant Display Data   By simply touching the icon on the screen results of up to 10 measurements stored in memory can be viewed or printed b ythe built in thermal auto cut-off printer.      Ineractive SETUP Change   Simply touch the icon on the screen and changed setting can be seen. The touch screen supports the interactive settings changes quickly and conveinently saving user time innovatively.      IOL Measurement   When refraction results in an error reading due to an intraocular lens or cataract the mesurement can be performed with the IOL icon switched 'ON'        Motorized Chinrest The chinrest is motorized with the use of a switch conveniently positioned for the operator. This makes for simple adjustment of the chinrest from patient to patient.      Printerwith Auto Cutter Function   Simply touch the "PRINT" icon on the screen and the PRK-6000 will immediately provide a complete printout of the measurement results. An Auto Cutter is provided for convenience.      Data Transfer   Data can be transferred to external devices (personal computer, etc.) via an RS-232 interface. A USB interface is also provided for future compatibility.     Specification Measurement Modes     K/R Mode Continuous Keratometry and Refractometry REF Mode Refractometry KER Mode Keratometry CLBC Contact Lens Base Curve Measurement K (P) Peripheral Keratometry     Refractometry     Vertex Distance (VD) 0.0, 12.0, 13.5, 15.0 Sphere (SPH) -25.00 ~ +22.00D (when VD=12mm) (Increments : 0.12 and 0.25D) Cylinder (CYL) 0.00 ~ +/- 10.00D (Increments : 0.12 and 0.25D) Axis (AX) 1 ~ 180° (increments : 1°) Cylinder Form -, +, MIX Pupil Distance (PD) 10 ~ 85 mm Minimum Pupil Distance Ø 2.0mm     Keratometry         Radius of Curvature 5.0 ~ 10.2mm (Increments : 0.01mm) Corneal Power 33.00 ~ 67.50D (when cornea equivalent refractive index is 1.3375) (Increments : 0.05/0.12/0.25D) Corneal Astigmatism 0.00 ~ -15.00D (Increments : 0.05/0.12/0.25D) Axis 1 ~ 180° (Increments : 1°)     Others     Corneal Diameter 2.0 ~ 12.0mm (Increments : 0.1mm) Memory of Data 10 measurements for each eye Internal Printer Thermal line printer with Auto-Cutter function Monitor 16.25 cm(6.4 inch) TFT-LCD (640 x 480 pixels, Touch-Screen function) Power Supply AC100-240V, 50/60Hz (Free Voltage, Free Frequency) Dimensions Approx. 300 (W) x 500 (D) x 430 (H) mm Weight Approx 20kg