Corneal injury thresholds for exposures to 1.54 μm radiation

Russell L. McCally; Jennifer Bonney-Ray; C. Brent Bargeron

doi:10.1117/12.479760

Corneal injury thresholds for exposures to 1.54 μm radiation

Russell L. McCally, Jennifer Bonney-Ray, C. Brent Bargeron

School of Medicine

Research output: Contribution to journal › Conference article › peer-review

5 Scopus citations

Abstract

Corneal epithelial injury thresholds have been determined for exposures to 1.54 μm infrared radiation having durations from 1 to 100 sec and beam diameters from 0.5 to 7 mm. For 1 sec exposures, measured thresholds range from 12 W/cm² (5 mm diameter beam) to 67 W/cm² (0.5 mm diameter). For 2 sec exposures, they range from 9 W/cm² (7 mm diameter) to 57 W/cm² (0.5 mm diameter). For 10 sec exposures, they range from 3.7 W/cm² (7 mm diameter) to 33 W/cm² (0.5 mm diameter). For 100 sec exposures, they are 1.4 W/cm² (7 mm diameter) and 3.7 W/cm² (2 mm diameter). The dependence of the measured thresholds on laser beam diameter provides strong evidence supporting a critical temperature damage model. These measured thresholds are greater than 10 times the maximum permissible exposure (MPE) in ANSI Z-136.5-2000.

Original language	English (US)
Pages (from-to)	107-112
Number of pages	6
Journal	Proceedings of SPIE - The International Society for Optical Engineering
Volume	4953
DOIs	https://doi.org/10.1117/12.479760
State	Published - Sep 29 2003
Event	Laser and Noncoherent Light Ocular Effects: Epidemiology, Prevention, and Treatment III - San Jose,CA, United States Duration: Jan 26 2003 → Jan 27 2003

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics
Computer Science Applications
Applied Mathematics
Electrical and Electronic Engineering

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title = "Corneal injury thresholds for exposures to 1.54 μm radiation",

abstract = "Corneal epithelial injury thresholds have been determined for exposures to 1.54 μm infrared radiation having durations from 1 to 100 sec and beam diameters from 0.5 to 7 mm. For 1 sec exposures, measured thresholds range from 12 W/cm2 (5 mm diameter beam) to 67 W/cm2 (0.5 mm diameter). For 2 sec exposures, they range from 9 W/cm2 (7 mm diameter) to 57 W/cm2 (0.5 mm diameter). For 10 sec exposures, they range from 3.7 W/cm2 (7 mm diameter) to 33 W/cm2 (0.5 mm diameter). For 100 sec exposures, they are 1.4 W/cm2 (7 mm diameter) and 3.7 W/cm2 (2 mm diameter). The dependence of the measured thresholds on laser beam diameter provides strong evidence supporting a critical temperature damage model. These measured thresholds are greater than 10 times the maximum permissible exposure (MPE) in ANSI Z-136.5-2000.",

author = "McCally, {Russell L.} and Jennifer Bonney-Ray and {Brent Bargeron}, C.",

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note = "Laser and Noncoherent Light Ocular Effects: Epidemiology, Prevention, and Treatment III ; Conference date: 26-01-2003 Through 27-01-2003",

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T1 - Corneal injury thresholds for exposures to 1.54 μm radiation

AU - McCally, Russell L.

AU - Bonney-Ray, Jennifer

AU - Brent Bargeron, C.

PY - 2003/9/29

Y1 - 2003/9/29

N2 - Corneal epithelial injury thresholds have been determined for exposures to 1.54 μm infrared radiation having durations from 1 to 100 sec and beam diameters from 0.5 to 7 mm. For 1 sec exposures, measured thresholds range from 12 W/cm2 (5 mm diameter beam) to 67 W/cm2 (0.5 mm diameter). For 2 sec exposures, they range from 9 W/cm2 (7 mm diameter) to 57 W/cm2 (0.5 mm diameter). For 10 sec exposures, they range from 3.7 W/cm2 (7 mm diameter) to 33 W/cm2 (0.5 mm diameter). For 100 sec exposures, they are 1.4 W/cm2 (7 mm diameter) and 3.7 W/cm2 (2 mm diameter). The dependence of the measured thresholds on laser beam diameter provides strong evidence supporting a critical temperature damage model. These measured thresholds are greater than 10 times the maximum permissible exposure (MPE) in ANSI Z-136.5-2000.

AB - Corneal epithelial injury thresholds have been determined for exposures to 1.54 μm infrared radiation having durations from 1 to 100 sec and beam diameters from 0.5 to 7 mm. For 1 sec exposures, measured thresholds range from 12 W/cm2 (5 mm diameter beam) to 67 W/cm2 (0.5 mm diameter). For 2 sec exposures, they range from 9 W/cm2 (7 mm diameter) to 57 W/cm2 (0.5 mm diameter). For 10 sec exposures, they range from 3.7 W/cm2 (7 mm diameter) to 33 W/cm2 (0.5 mm diameter). For 100 sec exposures, they are 1.4 W/cm2 (7 mm diameter) and 3.7 W/cm2 (2 mm diameter). The dependence of the measured thresholds on laser beam diameter provides strong evidence supporting a critical temperature damage model. These measured thresholds are greater than 10 times the maximum permissible exposure (MPE) in ANSI Z-136.5-2000.

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JO - Proceedings of SPIE - The International Society for Optical Engineering

JF - Proceedings of SPIE - The International Society for Optical Engineering

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Y2 - 26 January 2003 through 27 January 2003

ER -

Corneal injury thresholds for exposures to 1.54 μm radiation

Abstract

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