non-contact tonometer

The non-contact tonometer (NCT) is gradually recognized and accepted by more and more patients because of its simple operation, rapid measurement, automatic printing of test results, no direct contact with the eyeball, no surface anesthesia, and no pain for the patient. Before the test starts, open the protective cover on the detection nozzle, then turn on the power switch and NCT work button to put the NCT into the standby state. Basic Information Specialist Category: Ophthalmic Examination Category: Other Inspections Applicable gender: whether men and women apply fasting: not fasting Tips: Emotions should not be nervous. Normal value When the 3 intraocular pressure values ​​differ by >3 mmHg or the measured intraocular pressure value has "[]", it should be re-measured. If the patient has no vision, he can look at the front in nature. If the patient's pupil moves up or down, he or she looks slightly downward or upward. Clinical significance Abnormal results can cause nervous fear because they don't understand their methods. The nervous fear can cause neuromodulation disorders, ciliary muscle spasm, ciliary body and iris vascular congestion, which increase the intraocular pressure and affect the authenticity of intraocular pressure. Need to check the eyes of people with problems. Precautions Taboo before check: Emotions should not be nervous. Requirements for inspection: cooperate with the doctor. Inspection process 1. Before the test starts, open the protective cover on the detection nozzle, then turn on the power switch and NCT work button to put the NCT into the standby state. 2, instruct the patient to sit on the tonometer, the two eyes are naturally flat, the lower jaw is fixed on the lower bracket, the forehead is closely attached to the bracket plate, the height of the bracket is adjusted, the eye is at the same height as the NCT nozzle, and the eye to be inspected is debugged at the same time The focal length, according to the need to choose NCT automatic or manual function key switch, 嘱 patients concentrated, try to open the eyes to detect the red highlights in the nozzle. The nurse turns the joystick. When the focal length of the tonometer overlaps with the bright spot of the pupil and is clear, the NCT automatically ejects the air. The measured value is displayed on the display, and the average is measured three times. Then follow the above procedure to complete the test for the other eye. Not suitable for the crowd Inappropriate crowd: no special instructions.