Ocular hazards of tunable continuous-wave near-infrared laser sources

David J. Lund; Peter R. Edsall; Douglas F. Fuller; Stephen W. Hoxie

doi:10.1117/12.237518

1 April 1996 Ocular hazards of tunable continuous-wave near-infrared laser sources

David J. Lund, Peter R. Edsall, Douglas F. Fuller, Stephen W. Hoxie

Proceedings Volume 2674, Laser-Inflicted Eye Injuries: Epidemiology, Prevention, and Treatment; (1996) https://doi.org/10.1117/12.237518
Event: Photonics West '96, 1996, San Jose, CA, United States

Abstract

Retinal damage thresholds (ED₅₀s) were determined in Rhesus monkey eyes for 100 ms exposures to collimated radiation from a tunable Ti:Sapphire laser at several wavelengths from 700 nm to 900 nm. Prior research using 15 ns duration laser pulses showed a strong variability of ED₅₀ with wavelength for retinal exposure in Rhesus monkeys to laser radiation in the near infrared spectrum. Current studies with the Ti:Sapphire laser show similar variability of ED₅₀ with wavelength for 100 ms retinal exposures. Previously measured light transmission and absorption properties of ocular tissues do not provide a complete or obvious explanation for the significant variations of threshold with small changes in wavelength. Similar wavelength dependencies of ED₅₀ for the two exposure durations in the wavelength range of 750 nm to 830 nm suggest that linear absorption is a cause of the variability. However, differences in the ED₅₀ curves at other wavelengths show that nonlinear mechanisms also contribute.

Citation Download Citation

David J. Lund, Peter R. Edsall, Douglas F. Fuller, and Stephen W. Hoxie "Ocular hazards of tunable continuous-wave near-infrared laser sources", Proc. SPIE 2674, Laser-Inflicted Eye Injuries: Epidemiology, Prevention, and Treatment, (1 April 1996); https://doi.org/10.1117/12.237518

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