A - Human Necessities – 61 – F
Patent
A - Human Necessities
61
F
A61F 9/008 (2006.01) A61F 9/01 (2006.01) A61F 9/011 (2006.01) A61B 19/00 (2006.01)
Patent
CA 2485692
Systems (10) and methods apply pulsed laser energy to an eye with a pulsed laser system. The laser system (10) includes a pulsed laser (12), a laser beam delivery system (16) and at least one processor (22). The laser (12) makes a beam (14) of an ablative light energy. A dimension across the laser beam (14) varies during a treatment of the eye (E). A firing rate of the laser (12) varies as the dimension across the beam (14) varies during the treatment. The dimension across the beam and the firing rate of the laser (12) can be arranged so as to maintain a power of the beam (14) applied to the eye at a substantially constant level during at least a portion of the treatment. A firing rate of the laser (12) for each pulse may be listed in a treatment table (140).
L'invention porte sur des systèmes (10) et procédés d'application de l'énergie d'un laser pulsé à l'oeil. Un tel système (10) comporte un laser pulsé (12), un système (16) de guidage du faisceau laser, et au moins un processeur (22). Le laser (12) produit un faisceau (14) d'énergie lumineuse ablative dont une dimension transversale peut varier pendant le traitement de l'oeil (E). La cadence de tir du laser (12) peut également varier pendant le traitement. En modulant la dimension transversale du faisceau (14) et la cadence de tir du laser (12) on maintien à un niveau sensiblement constant la puissance du faisceau (14) appliquée à l'oeil pendant au moins une partie du traitement. La cadence de tir du laser (12) pour chaque impulsion peut être répertoriée dans une table (140) de traitement.
Fetherstonhaugh & Co.
Visx Incorporated
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