目的:改进数码改装的传统胶片眼底血管造影机的使用方法,使造影能在正常光线下进行,并能快速对焦,得到清晰的图片。同时使医生工作更轻松,患者配合更容易。方法:传统的胶片眼底血管造影机经过数码改装,普遍应用于临床。这些造影机存在CCD对焦困难,清晰度稍差;对焦点用指示点在照片上成像;没有零时刻,需要照一张照片进行计算;照相机快门时间较长等缺点。我们对这种造影机的使用方法予以改进,包括根据照明光在角膜上的反光确定相机前后位置;根据患者眼球位置确定图像位置,参考CCD上的瞬时图像;将微调旋钮加上刻度,正视眼为零;开始造影注药的同时拍零时刻照片。提前3s按下快门,减少等待时间。结果:我们可以在正常光线下就可以做造影,彩色照片时调节好微调旋钮,造影过程中不需要再进行调节。最后照得的照片清楚,对焦点简单,患者配合良好。结论:角膜反光对焦结合设定微调旋钮刻度的方法有较强的实用性,可供广大基层医生借鉴。基层医院医生要学会充分利用现有条件加以利用。

AIM:To improve the usage of digital-modified fundus angiography with traditional film for fast focusing and clear pictures with normal light.METHODS:The modified fundus angiography with traditional film was widely used in clinical application,but it had the following defects:it’s difficult to focus on CCD and result in poor clarity;imaging is focused by measured point;a photograph is needed for calculation because of no zero point;time of camera shutter is a little long,and etc.We modified the usage of this kind of imaging machine including:camera’s position is determined according to the reflection of illuminate light on cornea;the image position is based on eye position and refer to the instantaneous image on CCD;the fine-tuning knob is equipped with scale;photos are taken as soon as injection started,and shutter is pressed 3 seconds ahead for reducing waiting time.RESULTS:FFA can be finished under normal light,and the imaging process does not require further adjustment after regulation of fine-adjustment knob.The quality of photos is quite good as well as patient compliance.CONCLUSION:It is effective to do FFA by corneal reflex focusing and scales on fine-tuning knob.Doctors in primary hospital should learn to take full use of the current conditions during daily work.

R816.97