作者设计了一种透明的Pupicon仪器(见示图),能迅速以毫米测量瞳孔的大小。某些疾病早期可引起瞳孔变化,其测量有助于疾病的诊断和预后。在急性头部外伤时,所有医务人员都能很容易使用这种仪器。对诊测量比用手指更精确,并可在任何地方进行。瞳孔的病理改变常常出现于血压和脉搏等体征改变之前。瞳孔轻度扩大或反应迟钝,必要时要做眼底镜、视网膜血管血压计、多普勒(Doppler)扫描和动脉造影检查。测量时要使仪器上圆的大小与 The authors designed a transparent Pupicon instrument (see illustration) that quickly measures the pupil size in millimeters. Some diseases early can cause pupil changes, the measurement contributes to the diagnosis and prognosis of the disease. This instrument is easily accessible to all medical personnel in the case of acute head injury. Diagnostic measurements are more accurate than with your fingers and can be done anywhere. Pathological changes of the pupil often appear before the signs of blood pressure and pulse changes. Pupil mildly enlarged or unresponsive, if necessary, to do ophthalmoscope, retinal vascular sphygmomanometer, Doppler (Doppler) scan and arteriography. Measure the size of the circle on the instrument