April 1988
Volume 29, Issue 4
Free
Articles  |   April 1988
The retinal effects of copper vapor laser exposure.
Author Affiliations
  • S Gabay
    Department of Ophthalmology, Beilinson Medical Center, Petah Tiqva, Israel.
  • I Kremer
    Department of Ophthalmology, Beilinson Medical Center, Petah Tiqva, Israel.
  • I Ben-Sira
    Department of Ophthalmology, Beilinson Medical Center, Petah Tiqva, Israel.
  • D Sagie
    Department of Ophthalmology, Beilinson Medical Center, Petah Tiqva, Israel.
  • D Weinberger
    Department of Ophthalmology, Beilinson Medical Center, Petah Tiqva, Israel.
  • G Erez
    Department of Ophthalmology, Beilinson Medical Center, Petah Tiqva, Israel.
Investigative Ophthalmology & Visual Science April 1988, Vol.29, 528-533. doi:
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    • Get Citation

      S Gabay, I Kremer, I Ben-Sira, D Sagie, D Weinberger, G Erez; The retinal effects of copper vapor laser exposure.. Invest. Ophthalmol. Vis. Sci. 1988;29(4):528-533.

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      © ARVO (1962-2015); The Authors (2016-present)

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Abstract

The copper vapor laser is a pulsed gas laser which emits energy in two wavelengths simultaneously: 510.6 nm (green) and 578.2 nm (yellow). Each pulse has a duration of 15 nsec, maximal energy of 3 mJ and a peak power of more than 100 kW. It is a variably high repetition rate laser, in the range between 1 kHz and more than 20 kHz. We studied its interaction with the rabbit retina, while using two different repetition rates, 4 kHz and 18 kHz. The histological analysis of the lesion produced by 4 kHz repetition rate showed undesired retinal effects, similar to those caused by other pulsed lasers. On the other hand, the histological examination of the lesion produced by the 18 kHz repetition rate showed a desired coagulation effect, limited to the outer retinal layers, and comparable to a lesion produced by a continuous wave (CW) laser.

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