Method for the surgical treatment of the eye
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United States of America Patent
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-
Jul 5, 1983
Grant Date -
N/A
app pub date -
Nov 28, 1980
filing date -
Nov 28, 1979
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
The invention relates to a method for the surgical treatment of the eye by perforation, by laser radiation, of a tissue or inner wall of the eyeball having a resistance to the free circulation of the aqueous humour. A laser radiation burst comprising at least one pulse of duration d comprised between 10 and 60 ns and of radiated energy comprised between 30 and 300 millijoules is produced and focussed at a determined distance p inside the wall. The radiation is focussed according to a solid angle .OMEGA. determining a density of radiated energy causing ionization of the propagation medium. A shock wave is also produced due to this ionization close to the mean direction of propagation of the radiated, thereby allowing the tissue or inner wall to be perforated.
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