Trends in Retinal Damage Thresholds From 100-millisecond Near-Infrared Laser Radiation Exposures: A Study at 1,110, 1,130, 1,150, and 1,319 nm

被引：23

作者：

Vincelette, Rebecca L. ^{[1
]}

Rockwell, Benjamin A. ^{[2
]}

Oliver, Jeff W. ^{[2
]}

Kumru, Semih S. ^{[2
]}

Thomas, Robert J. ^{[2
]}

Schuster, Kurt J. ^{[3
]}

Noojin, Gary D. ^{[3
]}

Shingledecker, Aurora D. ^{[3
]}

Stolarski, Dave J. ^{[3
]}

Welch, Ashley J. ^{[1
]}

机构：

[1] Univ Texas Austin, Dept Biomed Engn, Cockrell Sch Engn, Austin, TX 78712 USA

[2] USAF, Res Lab, Opt Radiat Branch, Brooks City Base, TX 78231 USA

[3] Northrop Grumman, San Antonio, TX 78228 USA

来源：

LASERS IN SURGERY AND MEDICINE | 2009年 / 41卷 / 05期

关键词：

eye safe; laser safety; laser tissue interaction; non-ionizing radiation; ocular hazard;

D O I：

10.1002/lsm.20772

中图分类号：

R75 [皮肤病学与性病学];

学科分类号：

100206 ;

摘要：

Background and Objectives: Retinal damage thresholds from 100-millisecond exposures to laser radiation for wavelengths between 1,100 and 1,350 nm have never previously been established. We sought to determine the retinal damage threshold for 100-millisecond exposures of near-infrared (NIR) laser radiation wavelengths at 1,110, 1,130, 1,150, and 1,319 nm. These data were then used to create trends for retinal damage thresholds over the 1, 100-1,350 nm NIR region based upon linear absorption of laser radiation in ocular media and chromatic dispersion of the eye. Materials and Methods: The paramacula and macula areas of the retina in Macaca mulatta (rhesus) subjects were exposed for 100 milliseconds to NIR laser radiation wavelengths using a Coherent OPO laser for 1,110, 1,130, and 1,150 nm and a Lee laser for 1,319 nm. Probit analysis was used to establish the estimated damage threshold in the retina for 50% of exposures (ED50). Using trends of transmitted energy to the retina, refractive error of the eye and linear absorption of the retina, a scaling factor (SF) method was created to fit the experimental data, predicting retinal damage thresholds over the 1,100-1,350 nm region. Results: The experimental retinal damage threshold, ED50, for 100-millisecond exposures for laser radiation wavelengths at 1,110, 1,130, and 1,319 nm were determined to be 193, 270, and 13,713 mW of power delivered to the cornea, respectively. The retinal damage threshold for the 1, 150 nm wavelength was statistically undetermined due to laser-power limitations, but was achieved in one out of three subjects tested. Conclusion: The SF predicts the experimental 100-millisecond NIR ED50 value for wavelengths between 1, 100 and 1,350 nm. Lasers Surg. Med. 41:382-390, 2009. (C) 2009 Wiley-Liss, Inc.

引用

页码：382 / 390

页数：9