Endoillumination during vitrectomy and phototoxicity thresholds

被引:86
作者
van den Biesen, PR
Berenschot, T
Verdaasdonk, RM
van Weelden, H
van Norren, D
机构
[1] Univ Utrecht Hosp, FC Donders Inst Ophthalmol, Dept Biomed Engn, NL-3508 GA Utrecht, Netherlands
[2] Univ Utrecht Hosp, Inst Dermatol, NL-3508 GA Utrecht, Netherlands
关键词
D O I
10.1136/bjo.84.12.1372
中图分类号
R77 [眼科学];
学科分类号
100212 ;
摘要
Aim-To assess the retinal phototoxicity hazards of and to provide safety margins for endoillumination during vitrectomy. Methods-The absolute power and spectral distribution from various light sources and filter combinations that are commercially available for vitreous surgery were measured. The maximal exposure times based on the ICNIRP safety guidelines for photochemical and thermal injury of the aphakic eye were calculated. Additionally, the effect of various measures that reduce the risk of phototoxicity was evaluated. Results-Measurements of the spectrum and energy indicated that the ICNIRP safety guidelines for photochemical retinal damage are exceeded within 1 minute for nine out of 10 combinations tested. With an additional 475 nm long pass filter, light levels below 10 mW, and a distance from light probe to retina of at least 10 mm, the allowable exposure time can be increased up to 13 minutes. Thermal damage can be anticipated when the light probe touches the retina. Conclusion-Commercially available Light sources for endoillumination during vitrectomy are not safe with respect to photochemical retinal damage. Even with maximal precautions macular phototoxic damage remains a factual danger during vitrectomy.
引用
收藏
页码:1372 / 1375
页数:4
相关论文
共 9 条
[1]  
[Anonymous], 1997, HEALTH PHYS, V73, P539
[2]   Vision-threatening complications of surgery for full-thickness macular holes [J].
Banker, AS ;
Freeman, WR ;
Kim, JW ;
Munguia, D ;
Azen, SP ;
Lai, MY ;
Abrams, G ;
Dosick, W ;
Feldman, ST ;
Ochabski, R ;
Fine, SL ;
Bailey, I ;
Aaberg, T ;
Berger, B ;
Blankenship, GW ;
Brucker, AJ ;
deBustros, S ;
Yoshida, A ;
Gilbert, H ;
Han, DP ;
Kokame, G ;
McCuen, B ;
Frambach, DA ;
Sipperley, JO ;
Teeters, VW ;
Wood, W .
OPHTHALMOLOGY, 1997, 104 (09) :1442-1452
[3]  
GORGELS TGMF, 1995, INVEST OPHTH VIS SCI, V36, P851
[4]   SENSITIVITY OF THE RETINA TO RADIATION-DAMAGE AS A FUNCTION OF WAVELENGTH [J].
HAM, WT ;
MUELLER, HA ;
RUFFOLO, JJ ;
CLARKE, AM .
PHOTOCHEMISTRY AND PHOTOBIOLOGY, 1979, 29 (04) :735-743
[5]  
*HLTH COUNC NETH C, 1993, 19930998 HLTH COUNC
[6]  
MCDONALD HR, 1986, OPHTHALMOLOGY, V93, P978
[7]   MACULAR PHOTOTOXICITY CAUSED BY FIBEROPTIC ENDOILLUMINATION DURING PARS-PLANA VITRECTOMY [J].
MICHELS, M ;
LEWIS, H ;
ABRAMS, GW ;
HAN, DP ;
MIELER, WF ;
NEITZ, J .
AMERICAN JOURNAL OF OPHTHALMOLOGY, 1992, 114 (03) :287-296
[8]  
POLINER LS, 1992, OPHTHALMOLOGY, V99, P1671
[9]   Long-term follow-up of iatrogenic phototoxicity [J].
Postel, EA ;
Pulido, JS ;
Byrnes, GA ;
Heier, J ;
Waterhouse, W ;
Han, DP ;
Mieler, WF ;
Guse, C ;
Wipplinger, W .
ARCHIVES OF OPHTHALMOLOGY, 1998, 116 (06) :753-757