不同激发光下陈旧性眼底出血自身荧光的观察

目的 观察不同波长光线激发的陈旧性眼底出血的自身荧光现象。 方法 23例陈旧性眼底出血患者23只眼，使用Topcon 50IA 眼底血管造影机以荧光素眼底血管造影（FFA）状态的蓝光为激发光，分别采集4例陈旧性眼底出血患者自身荧光的黑白图片和16例患者自身荧光的彩色图像。分别使用海德堡视网膜血管造影机（HRA 2）488 nm和795 nm扫描激光作为激发光，观察3例陈旧性眼底出血患者的自身荧光。 结果 Topcon 50IA 眼底血管造影机蓝光激发下使用黑白方式记录4例陈旧性眼底出血患者眼底自身荧光，可发现自身荧光较强；彩色方式纪录16例患者自身荧光显示自身荧光为红色。3例陈旧性眼底出血患者眼底经蓝色激光（488 nm）和近红外激光（795 nm）激发，也可出现自身荧光，但是其范围和强度有所不同。 结论 陈旧性眼底出血的成份复杂，不同波长的光线可以激发陈旧性眼底出血产生出不同波长的自身荧光。

Autofluorescence of dated ocular fundus hemorrhage excited by different excitation light

Objective To observe the autofluorescence of dated fundus hemorrhage excited by the excitaton light with different wavelength. Methods A total of 23 patients (23 eyes) with dated fundus hemorrhage were observed. The blue light under the fundus fluorescence angiography (FFA) mode of Topcon 50IA fundus camera was the excitation light, and the white and black images of 4 patients and colorized images of 16 patients were collected, respectively. The autofluorescence of dated fundus hemorrhage in other 3 patients was observed by excitation of scanning laser with the wavelength of 488 nm and 795 nm emitted from Heidelberg retina angiography apparatus (HRA 2). Results The black and white images showed the strong red autofuorescence of dated fundus hemorrhage in 4 patients, while the colorized ones revealed the red autofluorescence in 16 patients. The hemorrhage autofluorescence could be also excited by blue laser (488 nm) and infrared laser (795 nm) using HRA 2, but with different extent and intensity. Conclusions Due to the complex composition of dated fundus hemorrhage, different excitation light can excite the autofuorescence with different wavelength.