Koch F H, Schmidt H P, Mönks T, Blumenröder S H, Haller A, Steinmetz R L
Department of Ophthalmology, University of Bonn, Germany.
Am J Ophthalmol. 1993 Oct 15;116(4):489-96. doi: 10.1016/s0002-9394(14)71410-2.
The multiport illumination system was developed as a fiberoptically illuminated pars plana cannula system for vitreous surgery. The retinal irradiance of the multiport illumination system and several other commonly used endoilluminators (light pipes) measured at 5 mm are comparable, ranging from 94 to 256 mW/cm2. In the actual surgical setting, however, the retinal irradiance of the multiport illumination system is far less (56 mW/cm2) because the end of the fiberoptic cables are fixated in the pars plana 16.5 mm away from the retinal surface. A reduction in the maximal intensity (100%) to 50% reduces the retinal irradiance by approximately two thirds to 3.7 mW/cm2. The light emitted by the multiport illumination system used in conjunction with a long-wave pass filter with a cutoff wavelength of 420 nm reduces the amount of short-wavelength light by one third to about 4% of the overall irradiance.
多端口照明系统是作为一种用于玻璃体手术的光纤照明的扁平部套管系统而开发的。多端口照明系统以及其他几种常用的眼内照明器（光导纤维）在5毫米处测得的视网膜辐照度相当，范围为94至256毫瓦/平方厘米。然而，在实际手术环境中，多端口照明系统的视网膜辐照度要低得多（56毫瓦/平方厘米），因为光纤电缆的末端固定在距视网膜表面16.5毫米的扁平部。将最大强度从100%降低到50%可使视网膜辐照度降低约三分之二，降至3.7毫瓦/平方厘米。与截止波长为420纳米的长波通滤光片结合使用的多端口照明系统发出的光，可将短波长光的量减少三分之一，降至总辐照度的约4%。
