A computer-implemented method of transmitting through a disordered medium from a transmitter to a receiver an image represented as input coherent electromagnetic radiation, the disordered medium having a transmission matrix comprising a plurality of complex-valued transmission constants that relate said input coherent electromagnetic radiation to output electromagnetic radiation at said receiver, which method comprises the steps of: performing a characterising process on said disordered medium to determine said transmission matrix; using said transmitter to transmit said image through said disordered medium; performing a reconstruction process using said transmission matrix to generate a reconstructed image from the output electromagnetic radiation at said receiver; wherein in said characterisation process the step of determining said transmission matrix comprises: determining said complex-valued transmission constants as real-valued transmission constants by using an approximately linear relationship between said input electromagnetic radiation and said output electromagnetic radiation; and using said real-valued transmission constants to generate and store a version of the transmission matrix; and said reconstruction process comprises the steps of: generating an output signal comprising intensity or amplitude values of said output electromagnetic radiation; generating said reconstructed image by combining said output signal and said version of the transmission matrix in a way that effects a matrix multiplication of an inverse of said transmission matrix and said output signal; and outputting said reconstructed image from said receiver.

A computer-implemented method of transmitting through a disordered medium from a transmitter to a receiver an image represented as input coherent electromagnetic radiation, the disordered medium having a transmission matrix comprising a plurality of complex-valued transmission constants that relate said input coherent electromagnetic radiation to output electromagnetic radiation at said receiver, which method comprises the steps of: performing a characterising process on said disordered medium to determine said transmission matrix; using said transmitter to transmit said image through said disordered medium; performing a reconstruction process using said transmission matrix to generate a reconstructed image from the output electromagnetic radiation at said receiver; wherein in said characterisation process the step of determining said transmission matrix comprises: determining said complex-valued transmission constants as real-valued transmission constants by using an approximately linear relationship between said input electromagnetic radiation and said output electromagnetic radiation; and using said real-valued transmission constants to generate and store a version of the transmission matrix; and said reconstruction process comprises the steps of: generating an output signal comprising intensity or amplitude values of said output electromagnetic radiation; generating said reconstructed image by combining said output signal and said version of the transmission matrix in a way that effects a matrix multiplication of an inverse of said transmission matrix and said output signal; and outputting said reconstructed image from said receiver.

A device for producing control data for a laser device for the surgical correction of defective vision. The device produces the control data such that the laser emits the laser radiation such that a volume in the cornea is isolated. The device calculates a radius of curvature R.sub.CV* to determine the control data, the cornea reduced by the volume having the radius of curvature R.sub.CV* and the radius of curvature being site-specific and satisfying the following equation: R.sub.CV*(r,φ)=1/((1/R.sub.CV(r,φ))+B.sub.COR(r,φ)/(n.sub.c−1))+F, wherein R.sub.CV(r,φ) is the local radius of curvature of the cornea before the volume is removed, n.sub.c is the refractive index of the material of the cornea, F is a coefficient, and B.sub.COR(r,φ) is the local change in refractive force required for the desired correction of defective vision in a plane lying in the vertex of the cornea, and at least two radii r1 and r2 satisfy the equation B.sub.COR(r=r1,φ)≠B.sub.COR(r=r2,φ).

A device for producing control data for a laser device for the surgical correction of defective vision. The device produces the control data such that the laser emits the laser radiation such that a volume in the cornea is isolated. The device calculates a radius of curvature R.sub.CV* to determine the control data, the cornea reduced by the volume having the radius of curvature R.sub.CV* and the radius of curvature being site-specific and satisfying the following equation: R.sub.CV*(r,φ)=1/((1/R.sub.CV(r,φ))+B.sub.COR(r,φ)/(n.sub.c−1))+F, wherein R.sub.CV(r,φ) is the local radius of curvature of the cornea before the volume is removed, n.sub.c is the refractive index of the material of the cornea, F is a coefficient, and B.sub.COR(r,φ) is the local change in refractive force required for the desired correction of defective vision in a plane lying in the vertex of the cornea, and at least two radii r1 and r2 satisfy the equation B.sub.COR(r=r1,φ)≠B.sub.COR(r=r2,φ).

A fiducial is generated on an internal anatomical structure of the eye of a patient with a surgical laser. A toric artificial intraocular lens (IOL) is positioned so that a marker of the toric IOL is in a predetermined positional relationship relative to the fiducial. This positioning aligns the toric IOL with the astigmatic or other axis of the eye. The toric IOL is then implanted in the eye of the patient with high accuracy.

A fiducial is generated on an internal anatomical structure of the eye of a patient with a surgical laser. A toric artificial intraocular lens (IOL) is positioned so that a marker of the toric IOL is in a predetermined positional relationship relative to the fiducial. This positioning aligns the toric IOL with the astigmatic or other axis of the eye. The toric IOL is then implanted in the eye of the patient with high accuracy.

Disclosed is an ophthalmological treatment apparatus for modifying a shape of a corneal surface of a human eye. The apparatus includes a surgical laser device for implementing tissue cuts. The apparatus further includes a computerized control device in operative coupling with the surgical laser device, the control device being designed to control the laser device to implement tissue cuts according to a cut geometry with a primary tissue cut and a secondary tissue cut, wherein the primary tissue cut is a relief cut and extends into the depth of the conical eye tissue, and wherein the secondary tissue cut lies within the conical eye tissue, such that the secondary tissue cut adds to the relieving effect of the primary tissue cut.

A laser instrument for therapy on the human eye, designed for surgery of the cornea, the sclera, the vitreous body or the crystalline lens, especially suitable for use in immediate succession with other instruments for eye diagnosis or eye therapy, in such a way that during the alternating use of the various instruments, the eye or at least the patient preferably remains in a predetermined position and alignment within one and the same treatment area.

A laser instrument for therapy on the human eye, designed for surgery of the cornea, the sclera, the vitreous body or the crystalline lens, especially suitable for use in immediate succession with other instruments for eye diagnosis or eye therapy, in such a way that during the alternating use of the various instruments, the eye or at least the patient preferably remains in a predetermined position and alignment within one and the same treatment area.

An apparatus includes a laser source and a scanner. The laser source is configured to generate electromagnetic radiation. The scanner scans at least part of a limbal area of an eye with the electromagnetic radiation generated by the laser source, thereby directing the electromagnetic radiation through an entire thickness of the limbal area of the eye without any contact with the eye and irradiating one or more regions of a trabecular meshwork of the eye with the electromagnetic radiation.