Abstract: According to certain embodiments, an ophthalmic surgical system for treating presbyopia comprises controllable components and a computer. The controllable components comprise a light source that generates a light beam and a scanner that directs a focal point of the light beam. The computer determines an ablation profile to remove tissue from a central region and a peripheral region of a cornea of a first eye of a pair of eyes. The ablation profile is designed to remove tissue from the central region to yield a protrusion to provide for near-vision, and to remove tissue from the peripheral region to correct to emmetropia.

Abstract: In certain embodiments, an ophthalmic surgical system for ablating tissue of an eye comprises controllable components (such as a light source and a scanner), optical elements, and a computer. The light source generates a light beam comprising pulses, where a propagation direction of the light beam defines a z-axis. The scanner directs a focal point of the light beam in an xy-plane orthogonal to the z-axis. The optical elements shape and focus the focal point of the light beam at a treatment region of the eye. The computer instructs one or more of the controllable components to generate the light beam comprising the pulses, where each pulse has a fluence greater than 1 J/cm2. An optical element of the optical elements focuses the focal point of the light beam with a spot size of less than 0.4 mm at the treatment region according to a focal spot pattern.

Abstract: According to certain embodiments, an ophthalmic surgical system for treating presbyopia comprises controllable components and a computer. The controllable components comprise a light source that generates a light beam and a scanner that directs a focal point of the light beam. The computer determines an ablation profile to remove tissue from a central region and a peripheral region of a cornea of a first eye of a pair of eyes. The ablation profile is designed to remove tissue from the central region to yield a protrusion to provide for near-vision, and to remove tissue from the peripheral region to correct to emmetropia.

Abstract: In certain embodiments, an ophthalmic surgical system for creating a lenticule in the cornea of an eye comprises controllable components (including a laser source and a scanner) and a computer. The laser source generates a laser beam, and the scanner directs the focal point of the laser beam. The computer determines a lenticule design for the lenticule having a posterior side and an anterior side. Either the posterior side or the anterior side has a central portion and a peripheral portion. The lenticule design is formed using a major lenslet and a minor lenslet, where the major lenslet is designed to correct to emmetropia. The lenticule design is formed by subtracting the minor lenslet from the major lenslet, where the subtraction of the minor lenslet yields the central portion. The computer instructs one or more of the controllable components to create the lenticule.

Abstract: A device for defining a flap geometry of a flap for laser treatment of a human eye comprises a control unit programmed to evaluate ablation profile data of an ablation profile for a laser ablation treatment of a human cornea and to define the flap geometry based on this evaluation.

Abstract: A method for producing a memory cell includes providing a non-conductive substrate, mounting a first conductor track made of conductive material on the non-conductive substrate, mounting a porous dielectric with or without redox-active molecules in a form of points on the first conductor track, and mounting a second conductor track orthogonally to the first conductor track, wherein the first and second conductor tracks have an electrode function at their intersection point, and wherein the porous dielectric is arranged between the electrodes. The method further includes mounting a passivation layer on the substrate, the first conductor track, the dielectric, and the second conductor track, so that the conductor track remains contactable. The first and the second conductor track form a memory at their intersection point with the dielectric arranged between them, in which the redox reaction of the redox-active molecules is configured to be driven by a voltage.

Abstract: A method for producing a memory cell includes providing a non-conductive substrate, mounting a first conductor track made of conductive material on the non-conductive substrate, mounting a porous dielectric with or without redox-active molecules in a form of points on the first conductor track, and mounting a second conductor track orthogonally to the first conductor track, wherein the first and second conductor tracks have an electrode function at their intersection point, and wherein the porous dielectric is arranged between the electrodes. The method further includes mounting a passivation layer on the substrate, the first conductor track, the dielectric, and the second conductor track, so that the conductor track remains contactable. The first and the second conductor track form a memory at their intersection point with the dielectric arranged between them, in which the redox reaction of the redox-active molecules is configured to be driven by a voltage.

Abstract: An apparatus for creating incisions in a human cornea comprises: a source of pulsed laser radiation; a scanner device for scanning the laser radiation; and a control computer for controlling the scanner device based on a control program, the control program containing instructions that, when executed by the computer, bring about the creation in the cornea of: a flap cut defining a corneal flap that is connected to surrounding corneal tissue through a hinge; and one or more auxiliary cuts in connection with the flap cut for removing gas generated during creation of the flap cut, the one or more auxiliary cuts defining a first channel extending from the flap cut to an anterior surface of the cornea and a reservoir located at least partially deeper within the cornea than the flap cut.

Abstract: A device for generating at least one continuous slit-like incision (42) from the posterior surface (48) as far as the anterior surface (46) of the cornea (44) of an eye, comprising a laser device for generating at least one part of the incision with focused pulsed laser radiation, the laser device including controllable components for setting the location of the focus, a control computer for controlling these components, and also a control program for the control computer. The control program contains instructions that are designed to bring about, upon execution by the control computer, the generation of at least one part of the incision (42) originating from the posterior surface (48) of the cornea, the cross-sectional contour of the incision—when observed in the direction from the anterior surface to the posterior surface—deviating from a straight line (60) perpendicular to the surface of the eye.

Abstract: A device for defining a flap geometry of a flap for laser treatment of a human eye comprises a control unit programmed to evaluate ablation profile data of an ablation profile for a laser ablation treatment of a human cornea and to define the flap geometry based on this evaluation.

Abstract: Proposed is an apparatus for assistance in the implantation of a corneal prosthesis in a human eye. The apparatus comprises a laser device for providing focussed, pulsed laser radiation, and a control program for the laser device. The control program is designed, to create an incision figure in the tissue of the eye by means of the laser radiation, this incision figure allowing the corneal prosthesis to be inserted. The incision figure in this case comprises a bed incision located entirely in the depth of the corneal material and an annular incision, which, within the circumferential line of the bed incision, extends from the latter, along its entire annular circumference, as far as the corneal anterior surface. The incision figure further may comprise an auxiliary incision, which extends from a location of the eye surface outside the circumferential line of the bed incision as far the bed incision.

Abstract: An apparatus for creating incisions in a human cornea comprises: a source of pulsed laser radiation; a scanner device for scanning the laser radiation; and a control computer for controlling the scanner device based on a control program, the control program containing instructions that, when executed by the computer, bring about the creation in the cornea of: a flap cut defining a corneal flap that is connected to surrounding corneal tissue through a hinge; and one or more auxiliary cuts in connection with the flap cut for removing gas generated during creation of the flap cut, the one or more auxiliary cuts defining a first channel extending from the flap cut to an anterior surface of the cornea and a reservoir located at least partially deeper within the cornea than the flap cut.

Abstract: A device for generating at least one continuous slit-like incision (42) from the posterior surface (48) as far as the anterior surface (46) of the cornea (44) of an eye, comprising a laser device for generating at least one part of the incision with focused pulsed laser radiation, the laser device including controllable components for setting the location of the focus, a control computer for controlling these components, and also a control program for the control computer. The control program contains instructions that are designed to bring about, upon execution by the control computer, the generation of at least one part of the incision (42) originating from the posterior surface (48) of the cornea, the cross-sectional contour of the incision—when observed in the direction from the anterior surface to the posterior surface—deviating from a straight line (60) perpendicular to the surface of the eye.

Abstract: Proposed is an apparatus for assistance in the implantation of a corneal prosthesis in a human eye. The apparatus comprises a laser device for providing focussed, pulsed laser radiation, and a control program for the laser device. The control program is designed, to create an incision figure in the tissue of the eye by means of the laser radiation, this incision figure allowing the corneal prosthesis to be inserted. The incision figure in this case comprises a bed incision located entirely in the depth of the corneal material and an annular incision, which, within the circumferential line of the bed incision, extends from the latter, along its entire annular circumference, as far as the corneal anterior surface. The incision figure further may comprise an auxiliary incision, which extends from a location of the eye surface outside the circumferential line of the bed incision as far the bed incision.

Abstract: A device for dissecting an eye for the introduction of photosensitizer into the cornea where laser radiation is focused in the interior of the cornea to create cavitation bubbles, whereby channels are created in the cornea through which the photosensitizer can be introduced into the cornea. Furthermore, a method for refractive surgery includes utilizing a sensitizer for hardening corneal tissue by cross-linking.

Abstract: A device for laser-aided eye surgery comprising a patient table, as well as at least one laser system with a laser treatment head for emission of a focused laser beam onto an eye of a patient to be treated on the table. The laser system comprises an operation microscope with a viewing beam path running collinear to the laser beam path at least in the area of the emission location of the laser beam. According to the invention, the device is characterized by at least a first camera to create an image at least comprising the area from the mouth to the forehead of a patient lying on a table, as well as by a display device to display the picture taken. As an alternative to, or in addition to, the first camera and the display device, the eye-surgery device can comprise a laser projector for projection of a laser light pattern onto the patient's body as well as a guiding computer controlling the projector with an image signal output to which an image signal input of the projector is attached.

Abstract: A device for generating at least one continuous slit-like incision (42) from the posterior surface (48) as far as the anterior surface (46) of the cornea (44) of an eye, comprising a laser device for generating at least one part of the incision with focused pulsed laser radiation, the laser device including controllable components for setting the location of the focus, a control computer for controlling these components, and also a control program for the control computer. The control program contains instructions that are designed to bring about, upon execution by the control computer, the generation of at least one part of the incision (42) originating from the posterior surface (48) of the cornea, the cross-sectional contour of the incision—when observed in the direction from the anterior surface to the posterior surface—deviating from a straight line (60) perpendicular to the surface of the eye.

Abstract: Iron and vanadium is phosphoric acid solution are reduced. To this end, the phosphoric acid solution is contacted with ferrophosphorus which is used as the reductant.

Abstract: The disclosure relates to a process for making alkali metal polyphosphates, especially alkali metal triphosphates. To this end, the disclosure provides for an alkali metal phosphate solution or suspension to be forced through at least one nozzle and for them to be sprayed inside a spray tower through a flame zone produced by a one or more burners arranged in annular fashion. More particularly, the disclosure provides for fine particulate alkali metal polyphosphates, especially alkali metal triphosphates, to be additionally introduced into the spray tower from above and for them to be regularly distributed across the spray region(s) of the nozzle(s) with formation of agglomerated products.The disclosure also relates to an apparatus for carrying out the process.

Abstract: The invention provides a process and an apparatus for removing molten phosphorus pentasulfide, via an overflow, from a reactor, wherein phosphorus is reacted with sulfur at temperatures higher than 300.degree. C.To this end, the reactor is supplied with phosphorus and sulfur from dosing vessels which are given the dimensions necessary (a) to receive the quantity of phosphorus and sulfur, respectively, which are required to produce phosphorus pentasulfide with a preselected quantitative ratio of P:S, (b) to provide a total filling volume corresponding to that of a P.sub.2 S.sub.5 -receiving tank. The quantity of the phosphorus and sulfur feed materials in the respective dosing vessels is in each case fully emptied into the reactor and a corresponding quantity of molten P.sub.2 S.sub.5 is simultaneously discharged directly from the reactor, via the overflow, into the respective P.sub.2 S.sub.5 -receiving tank, whose filling volume exactly corresponds, to that of the dosing vessels.