Canon Auto tonometer TX-F

Choose from either Full Auto, Auto, or Manual to match the situation. In Full Auto mode, you can set the TX-F to take 1 or 3 measurements for each eye, and it will perform alignment and measurement on both eyes after you press the Start button. Printout or data transfer can be automatic. In Auto mode, alignment and measurement are automatic, with only one measurement taken at a time.And in Manual mode, you have full control over alignment and focusing using the trackball and roller. Guides are marked on the central alignment ring to make it as easy as possible to align the two bright dotsreflecting on the patient's cornea.