Method for the surgical treatment of the eye

Details Method for the surgical treatment of the eye Method for the surgical treatment of the eye

1980-11-28

1983-07-05

Howell, Kyle L.

Surgery

Truss

Pad

128362, A61B 1736

Patent

active

043912753

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.

REFERENCES:
patent: 4164222 (1979-08-01), Prokhorov et al.
patent: 4185633 (1980-01-01), Prozorov et al.
patent: 4215694 (1980-08-01), Isakov et al.
patent: 4266549 (1981-05-01), Kimura
patent: 4270845 (1981-06-01), Takizawa et al.
patent: 4273535 (1981-06-01), Yamamoto et al.
patent: 4309998 (1982-01-01), Aron et al.

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