Short duration pulse grid pattern laser treatment and methods

A system for providing a therapeutic treatment to a patient's eye, the system comprising:

• a treatment beam source configured to transmit a treatment beam along a treatment beam path;
• a scanning device disposed along the treatment beam path and configured to scan the treatment beam along ocular tissue of the patient's eye;
• and
• a processor operable with the scanning device and configured to:
• A) define a plurality of target positions relative to the ocular tissue for the treatment beam, the plurality of target positions comprising a first target position, a second target position, and a plurality of intermediate target positions;
• B) scan the treatment beam incrementally among the first target position, the second target position, and the plurality of intermediate target positions;
• C) deliver a pulse from the treatment beam to the ocular tissue at each of the first target position, the second target position, and the plurality of intermediate target positions as the treatment beam is scanned incrementally among the first target position, the second target position, and the plurality of intermediate target positions;
• D) return the treatment beam to the first target position;
• and
• E) repeat B) and C) to deliver at least one additional pulse from the treatment beam to the ocular tissue at each of the first target position, the second target position, and the plurality of intermediate target positions as the treatment beam is scanned incrementally among the first target position, the second target position, and the plurality of intermediate target positions;
• wherein:
• a duration of each pulse is between 50 and 1000 microseconds;
• a time interval between consecutive pulses delivered to the first target position is greater than 1900 microseconds;
• each pulse delivered to the second target position and the plurality of intermediate target positions is delivered during the time interval of 1900 microseconds;
• and
• a cumulative effect of the pulses delivered to the first target position, the second target position, and the plurality of intermediate target positions is sufficient to induce photoactivation that is effective to treat the retinal tissue at the respective target positions.

A system for providing a therapeutic treatment to a patient's eye, the system comprising:

• a treatment beam source configured to transmit a visible treatment beam along a treatment beam path;
• a scanning device disposed along the treatment beam path and configured to scan the treatment beam along ocular tissue of the patient's eye;
• and
• a processor operable with the scanning device and configured to:
• A) define a plurality of target positions relative to the ocular tissue for the treatment beam, the plurality of target positions comprising a first target position, a second target position, and a plurality of intermediate target positions;
• B) deliver a pulse from the treatment beam to the ocular tissue at each of the first target position, the second target position, and the plurality of intermediate target positions;
• C) scan the treatment beam incrementally among the first target position, the second target position, and the plurality of intermediate target positions during delivery of the pulses;
• and
• D) repeat B) and C) to deliver at least one additional pulse from the treatment beam to the ocular tissue at each of the first target position, the second target position, and the plurality of intermediate target positions;
• wherein:
• a duration of each pulse is between 50 and 1000 microseconds,
• a time interval between consecutive pulses delivered to the first target position is greater than 1900 microseconds,
• each pulse delivered to the second target position and the plurality of intermediate target positions is delivered during the time interval of 1900 microseconds between consecutive pukes delivered to the first target position;
• and
• a cumulative effect of the pukes delivered to the first target position, the second target position, and the plurality of intermediate target positions is sufficient to induce photoactivation that is effective to treat the retinal tissue at the respective target positions.