Laser methods and systems for addressing, mitigating and reversing presbyopia
Systems and methods for performing laser operations to improve the accommodative amplitude of an eye. Systems, methods and laser delivery patterns and operations for structural pillars in the lens of the eye to permit deformation of laser effected areas of the lens that are adjacent to the pillars.
1. A laser system for performing a laser operation to increase an amplitude of accommodation of a lens of an eye, the laser system comprising:
a. a laser for generating a laser beam;
b. a control system comprising a controller and a laser beam delivery pattern; and the control system configured to deliver the laser beam to the lens of the eye in the laser beam delivery pattern; and,
c. the laser beam delivery pattern comprising an annular ring; and the control system configured to deliver the laser beam in the laser beam delivery pattern to a location below the lens capsule and entirely within the lens; wherein the laser beam delivery pattern avoids contact with an AP pillar of lens material and an equatorial pillar of lens material;
i. whereby after delivery of the laser beam pattern an AP pillar and an equatorial pillar of laser unaffected lens material remains;
ii. whereby after delivery of the laser beam pattern an annular shape changing zone is created within the lens and extends to and includes the lens capsule;
d. wherein the laser beam delivery pattern comprises a plurality of shots, wherein all laser beams in the laser beam shot pattern are below laser induced optical breakdown at the lens capsule.
2. The system of claim 1 , wherein the laser beam delivery pattern comprises a second annular ring.
3. The system of claim 2 , wherein the laser beam delivery pattern comprises a second annular ring; wherein the annular rings follow a shape of the lens capsule, and wherein the annular rings do not contact an equatorial axis of the lens.
4. The system of claim 3 , wherein the laser beam delivery pattern comprises a plurality of shots having a predetermined power density at the lens capsule and within the lens; and wherein the AP pillar has a cross sectional diameter of about 1 mm to about 2 mm.
5. The systems of claim 1 , 2 , 3 or 4 , wherein the laser beam delivery pattern comprises a plurality of shots, wherein the laser shots have a pulse length, and a spot size at the focal point; and
wherein the AP pillar defines an axis; and the AP pillar axis is coaxial with an AP axis of the eye.
6. The systems of claim 1 , 2 , 3 , or 4 , wherein the laser beam delivery pattern comprises a plurality of shots, wherein the laser shots have a pulse length, and a spot size at the focal point; and
wherein the AP pillar defines an axis; and the AP pillar axis is not coaxial with an AP axis of the eye.
7. The systems of claim 1 , 2 , 3 , or 4 , wherein the AP pillar defines an axis; and the AP pillar axis is not coaxial and is titled with an AP axis of the eye.
8. The systems of claim 1 , 2 , 3 , or 4 , wherein the laser beam delivery pattern comprises a second annular ring; and
wherein the AP pillar defines an axis; and the AP pillar axis is not coaxial with an AP axis of the eye.
9. The systems of claim 1 , 2 , 3 , or 4 , wherein the laser beam delivery pattern comprises a second annular ring; wherein the annular rings follow a shape of the lens capsule, and wherein the annular rings do not contact an equatorial axis of the lens; and wherein the AP pillar defines an axis; and the AP pillar axis is not coaxial and is titled with an AP axis of the eye.
10. A laser system for performing a laser operation to increase an amplitude of accommodation of a lens of an eye, the laser system comprising:
a. a laser for generating a laser beam;
b. a control system comprising a controller and a laser beam delivery pattern; and the control system configured to deliver the laser beam to the lens of the eye in the laser beam delivery pattern; and,
c. the laser beam delivery pattern comprising an annular ring; and the control system configured to deliver the laser beam in the laser beam delivery pattern to a location below the lens capsule and entirely within the lens; wherein the laser beam delivery pattern avoids contact with an AP pillar of lens material and an equatorial pillar of lens material;
i. whereby after delivery of the laser beam delivery pattern an AP pillar and an equatorial pillar of laser unaffected lens material remains;
ii. whereby after delivery of the laser beam delivery pattern an annular shape changing zone is created within the lens and extends to and includes the lens capsule;
iii. whereby the annular ring defines a volume of lens material of about 4.0 mm 3 to about 75 mm 3 ; and a surface area to volume ratio of about 2 to about 5.
11. The system of claim 10 , wherein the volume is from about 20 mm 3 to about 40 mm 3 .
12. The system of claim 10 , wherein the surface area to volume ratio is about 3 to about 4.
13. The system of claim 10 , wherein the laser beam delivery pattern comprises a plurality of shots, wherein all laser beams in the laser beam shot pattern are below laser induced optical breakdown at the lens capsule.