Optical correction methods, devices, and systems reduce optical aberrations or inhibit refractive surgery induced aberrations. Error source control and adjustment or optimization of ablation profiles or other optical data address high order aberrations. A simulation approach identifies and characterizes system factors that can contribute to, or that can be adjusted to inhibit, optical aberrations. Modeling effects of system components facilitates adjustment of the system parameters.

By adapting femtosecond micromachining approaches developed in hydrogels, we can perform Intra-tissue Refractive Index Shaping (IRIS) in biological tissues. We reduced femtosecond laser pulse energies below the optical breakdown thresholds to create grating patterns that are associated with a change in the refractive index of the tissue. To increase two-photon absorption, we used a two (or more)-photon-absorbing chromophore.

Embodiments of this invention generally relate to ophthalmic laser procedures and, more particularly, to systems and methods for lenticular laser incision. In an embodiment, an ophthalmic surgical laser system comprises a laser delivery system for delivering a pulsed laser beam to a target in a subject's eye, an XY-scan device to deflect the pulsed laser beam, a Z-scan device to modify a depth of a focus of the pulsed laser beam, and a controller configured to form a top lenticular incision and a bottom lenticular incision of a lens in the subject's eye, where each of the top and bottom lenticular incision includes a center spherical portion and an edge transition portion that is not located on the same spherical surface as the spherical portion but has a steeper shape.

A laser system for changing the index of refraction of cornea tissue in a living eye. The laser system comprises a laser that provides laser pulses with a wavelength from 400 nm to 900 nm and a pulse energy from 0.01 nJ to 10 nJ, and a control device for setting the operating parameters of the laser below an optical breakdown threshold of the tissue to avoid photo-disruption and tissue destruction of the tissue, and to direct the laser pulses at the cornea tissue resulting in a change in the index of refraction of the tissue within regions irradiated by the laser pulses.

The invention relates to a method for providing control data for an ophthalmological laser (12) of a treatment apparatus (10) for avoiding optical aberrations. As the steps, the method includes ascertaining (S10) first aberration values from a predetermined wavefront measurement of an eye, which has a first extension (32), wherein a first refractive power error is determined from the first aberration values; ascertaining (S12) second aberration values from a subset of the predetermined wavefront measurement, which has a second extension (34), wherein the second extension (34) is smaller than the first extension (32), wherein a second refractive power error is determined from the second aberration values; ascertaining (S14) a difference between the first and the second refractive power error; ascertaining (S16) an aberration-corrected refractive power change by subtracting the ascertained difference of refractive power errors from a predetermined subjective refractive power correction, which is predetermined from a glasses correction measurement; and providing (S18) the control data for the ophthalmological laser (12), which includes the aberration-corrected refractive power change.

An optical surgical probe includes a cylindrical cannula; a light guide partially within the cannula to receive a light beam from a light source through a proximal end, to guide the light beam to a distal end of the light guide, and to emit the light beam through the distal end of the light guide; a multi-spot generator at a distal end of the cannula that includes an optical element with a proximal surface to receive the emitted light beam, and a focusing lens, positioned inside the optical element to focus the received light beam into a focused beam, wherein the optical element has a faceted distal surface to split the focused beam into multiple distally emitted beam-components when the optical surgical probe is operated in a fluid with an index of refraction of 1.30-1.40, and to confine the focused beam in the optical surgical probe when the optical surgical probe is operated in air.

A treatment method and apparatus for surgical correction of defective-eyesight in an eye of a patient, wherein a laser device is controlled by a control device, said laser device separating corneal tissue by irradiation of laser radiation to isolate a volume located within a cornea, wherein the control device controls the laser device to focus the laser radiation, by providing target points located within the cornea, into the cornea, wherein the control device, when providing the target points, allows for focus position errors which lead to a deviation between the predetermined position and the actual position of the target points when focusing the laser radiation, by pre-offsets depending on the positions of the respective target points to compensate for said focus position errors.

Embodiments of the present invention provide methods and systems for determining an ablation treatment for an eye of a patient. The systems and method may involve determining an ellipsoid shape corresponding to an anterior corneal surface of the patient's eye. The ellipsoid shape may include an anterior portion, a major axis, and an apex, where the major axis intersects the anterior portion at the apex. The systems and method may also involve determining a tilted orientation of the eye, such as when the patient fixates on a target during a laser ablation procedure. The systems and method may further involve determining the ablation treatment based on the ellipsoid shape and/or the tilted orientation.

Methods and systems wherein laser induced refractive index changes by focused femtosecond laser pulses in optical polymeric materials or optical tissues is performed to address various types of vision correction.

Methods and systems wherein laser induced refractive index changes by focused femtosecond laser pulses in optical polymeric materials or optical tissues is performed to address various types of vision correction.