Devices, methods and compositions for presbyopia correction using ultrashort pulse laser
View Patent ↗The invention relates to devices, compositions and methods used to improve vision and/or to treat an eye lens disease or condition. In some embodiments, the invention relates to altering or removing eye lens material for the treatment of presbyopia. In additional embodiments, the invention relates to placing compositions in a lens of an eye to improve elasticity of the lens both therapeutically by improving elasticity and/or improving refractive properties and/or prophylactically by preventing renewed stiffening and/or renewed deterioration of the lens refractive properties. In further embodiments, the invention relates to devices and methods of obtaining and analyzing data for use in altering the lens to optimize its elasticity and/or refractive properties.
1. A method comprising:
a) providing:
i) a subject comprising an eye comprising eye lens tissue;
ii) a device configured to photoablate eye lens tissue; and
iii) a polymeric solution;
b) photoablating at least a portion of said eye tissue with said device providing photoablated lens tissue;
c) removing at least a portion of said photoablated lens tissue so as to provide a removed lens tissue area; and
d) adding said polymeric solution into said removed lens tissue area under conditions such that a polymer gels.
2. The method of claim 1 , wherein said device comprises:
a) two laser beams;
b) a first light focusing object and a second light focusing object wherein said second light focusing object is configured to intersect said two laser beams;
c) a first platform comprising a first motor configured to adjust a position of said first light focusing object;
d) a housing configured to fix a position of said eye, wherein said first platform is secured to said housing;
e) a second platform comprising a second motor configured to adjust a position of said second light focusing object;
f) a third motor attached to said second platform wherein said motor is configured to adjust said second platform around said housing;
g) a microscope configured to view said eye of said subject through the inside of said housing;
h) a computer configured to control said microscope, said two laser beams; and said positions of said first, said second, and said third motors.
3. The method of claim 1 , wherein said gelled polymer has refractive index matching the refractive index of surrounding lens tissue.
4. The method of claim 1 , wherein said photoablated material is removed by a syringe.
5. The method of claim 1 , wherein said polymer solution is added by a syringe.
6. The method of claim 2 wherein at least one of said two laser beams is an ultrashort pulse laser beam.
7. The method of claim 6 wherein said ultrashort pulse laser beam pulse is less than 10 picoseconds in temporal duration.
8. The method of claim 6 wherein said ultrashort pulse laser beam pulse is between 100-300 femtoseconds in temporal duration.