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Wavelength dependence of ocular damage thresholds in the near-ir to far-ir transition region: proposed revisions to MPES.
Health Phys 2007; 92(1):15-23HP

Abstract

This report summarizes the results of a series of infrared (IR) laser-induced ocular damage studies conducted over the past decade. The studies examined retinal, lens, and corneal effects of laser exposures in the near-IR to far-IR transition region (wavelengths from 1.3-1.4 mum with exposure durations ranging from Q-switched to continuous wave). The corneal and retinal damage thresholds are tabulated for all pulsewidth regimes, and the wavelength dependence of the IR thresholds is discussed and contrasted to laser safety standard maximum permissible exposure limits. The analysis suggests that the current maximum permissible exposure limits could be beneficially revised to (1) relax the IR limits over wavelength ranges where unusually high safety margins may unintentionally hinder applications of recently developed military and telecommunications laser systems; (2) replace step-function discontinuities in the IR limits by continuously varying analytical functions of wavelength and pulsewidth which more closely follow the trends of the experimental retinal (for point-source laser exposures) and corneal ED50 threshold data; and (3) result in an overall simplification of the permissible exposure limits over the wavelength range from 1.2-2.6 mum. A specific proposal for amending the IR maximum permissible exposure limits over this wavelength range is presented.

Authors+Show Affiliations

Northrop Grumman Information Technology, 4241 Woodcock Drive, Suite B-100, San Antonio, TX 78228-1330, USA. joe.zuclich.ctr@brooks.af.milNo affiliation info availableNo affiliation info available

Pub Type(s)

Journal Article
Research Support, U.S. Gov't, Non-P.H.S.

Language

eng

PubMed ID

17164595

Citation

Zuclich, Joseph A., et al. "Wavelength Dependence of Ocular Damage Thresholds in the Near-ir to Far-ir Transition Region: Proposed Revisions to MPES." Health Physics, vol. 92, no. 1, 2007, pp. 15-23.
Zuclich JA, Lund DJ, Stuck BE. Wavelength dependence of ocular damage thresholds in the near-ir to far-ir transition region: proposed revisions to MPES. Health Phys. 2007;92(1):15-23.
Zuclich, J. A., Lund, D. J., & Stuck, B. E. (2007). Wavelength dependence of ocular damage thresholds in the near-ir to far-ir transition region: proposed revisions to MPES. Health Physics, 92(1), pp. 15-23.
Zuclich JA, Lund DJ, Stuck BE. Wavelength Dependence of Ocular Damage Thresholds in the Near-ir to Far-ir Transition Region: Proposed Revisions to MPES. Health Phys. 2007;92(1):15-23. PubMed PMID: 17164595.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Wavelength dependence of ocular damage thresholds in the near-ir to far-ir transition region: proposed revisions to MPES. AU - Zuclich,Joseph A, AU - Lund,David J, AU - Stuck,Bruce E, PY - 2006/12/14/pubmed PY - 2007/1/12/medline PY - 2006/12/14/entrez SP - 15 EP - 23 JF - Health physics JO - Health Phys VL - 92 IS - 1 N2 - This report summarizes the results of a series of infrared (IR) laser-induced ocular damage studies conducted over the past decade. The studies examined retinal, lens, and corneal effects of laser exposures in the near-IR to far-IR transition region (wavelengths from 1.3-1.4 mum with exposure durations ranging from Q-switched to continuous wave). The corneal and retinal damage thresholds are tabulated for all pulsewidth regimes, and the wavelength dependence of the IR thresholds is discussed and contrasted to laser safety standard maximum permissible exposure limits. The analysis suggests that the current maximum permissible exposure limits could be beneficially revised to (1) relax the IR limits over wavelength ranges where unusually high safety margins may unintentionally hinder applications of recently developed military and telecommunications laser systems; (2) replace step-function discontinuities in the IR limits by continuously varying analytical functions of wavelength and pulsewidth which more closely follow the trends of the experimental retinal (for point-source laser exposures) and corneal ED50 threshold data; and (3) result in an overall simplification of the permissible exposure limits over the wavelength range from 1.2-2.6 mum. A specific proposal for amending the IR maximum permissible exposure limits over this wavelength range is presented. SN - 0017-9078 UR - https://www.unboundmedicine.com/medline/citation/17164595/Wavelength_dependence_of_ocular_damage_thresholds_in_the_near_ir_to_far_ir_transition_region:_proposed_revisions_to_MPES_ L2 - http://Insights.ovid.com/pubmed?pmid=17164595 DB - PRIME DP - Unbound Medicine ER -