Retinal effects of copper vapor laser exposure

Journal Article · Fri Apr 01 04:00:00 EST 1988 · Invest. Ophthalmol. Visual Sci.; (United States)

OSTI ID:7194389

Gabay, S; Kremer, I; Ben-Sira, I; Sagie, D; Weinberger, D; Erez, G

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.

• Research Organization: Beilinson Medical Center, Petah Tiqva (Israel)
• OSTI ID: 7194389
• Journal Information: Invest. Ophthalmol. Visual Sci.; (United States), Journal Name: Invest. Ophthalmol. Visual Sci.; (United States) Vol. 29:4; ISSN IOVSD
• Country of Publication: United States
• Language: English

Related Subjects

550600 -- Medicine
560400* -- Other Environmental Pollutant Effects
62 RADIOLOGY AND NUCLEAR MEDICINE
63 RADIATION, THERMAL, AND OTHER ENVIRON. POLLUTANT EFFECTS ON LIVING ORGS. AND BIOL. MAT.
ANIMALS
BIOLOGICAL EFFECTS
BODY
BODY AREAS
COPPER
ELECTROMAGNETIC RADIATION
ELEMENTS
EYES
FACE
HEAD
LASER RADIATION
LASERS
MAMMALS
MEDICINE
METALS
OPHTHALMOLOGY
ORGANS
RABBITS
RADIATIONS
RETINA
SENSE ORGANS
SURGERY
TRANSITION ELEMENTS
VERTEBRATES
WAVELENGTHS