Qu J, Wang G, Tao Y, Lu F, Shi M, Li X, Ling Y
Department of Ophthalmology and Optometry, Wenzhou Medical College, China.
Yan Ke Xue Bao. 1993 Mar;9(1):45-8.
We perfected the narrow spectral band fundus photographic system using interference filters at the wavelengths of 417, 478, 500, 530, 547, 570, 589, 607, 628 and 648 nm. Tests about the light penetration of filters and exposure of various brand films were made on this system. Studies of the contrast of fundal tissues and structures under the different narrow spectral band light were made on 43 Chinese fellow eyes. The results indicates that the interference filters of 570 nm have the highest light penetration. Kodak and Gongyuan films (make in China) are the optimal ones. Narrow spectral band fundus photography can eliminate the chromatic aberration and therefore improve the documentation of fundal details, enhance the contrast of pictures as compared with routine white light fundus photography.
我们使用波长为417、478、500、530、547、570、589、607、628和648纳米的干涉滤光片完善了窄谱带眼底照相系统。在此系统上对滤光片的光穿透率和各种品牌胶片的曝光进行了测试。对43只中国人的对侧眼进行了不同窄谱带光下眼底组织和结构对比度的研究。结果表明，570纳米的干涉滤光片具有最高的光穿透率。柯达胶片和公元胶片（中国制造）是最佳选择。窄谱带眼底照相可以消除色差，从而改善眼底细节的记录，与常规白光眼底照相相比增强图像对比度。
