摘要:
A device for surgery of the cornea comprising: an annular base (100) for fixing the apparatus to the eye of a patient; a cutter head (200) comprising a body (200a) and a blade (201) suitable for being displaced along a plane trajectory parallel to the annular base (100); guide means (106) for guiding the cutter head (200) relative to the base (100); drive means (302) for driving the blade (201) in the cutter head (200) with reciprocating linear motion parallel to its cutting edge (201b); and drive means (303) for driving the cutter head (200) relative to the annular base (100) along said trajectory. Said drive means (302, 303) comprise two independent motor units surmounting the cutter head and having mutually parallel outlet shafts (306, 310) perpendicular to the plane of the trajectory of the cutter head (200).
摘要:
A corneal surgical apparatus for forming a flap in a cornea, includes: a blade unit including a blade, and an identification information communicating portion that transmits identification information; a head portion that holds the blade unit detachably; an oscillation mechanism portion that oscillates the blade unit, which is held by the head portion, in a direction of a width of the blade; a receiving portion that receives the identification information transmitted from the identification information communicating portion; a storage portion that stores the identification information; and a control portion that collates the identification information received by the receiving portion with the identification information stored in the storage portion, and controls the driving of the oscillation mechanism portion based on a result of collation.
摘要:
A device is disclosed for separating the epithelial layer of a cornea from the eye. The device includes a separator having an edge to remove the epithelial layer as the separator moves across the eye. The edge includes a thickness thicker than the thickness of at least one epithelial cell and less thick than the thickness of the epithelial layer. Separation can be performed mechanically, without the use of chemicals, so that the shape and integrity of the separated epithelial layer is preserved. The device can also be used with a polymer film that adheres to the epithelial layer to help preserve an integrity of the epithelial layer.
摘要:
Methods for improving or correcting a patient's vision are provided which generally include inserting a lens within the stroma of an eye of the patient by forming an incision in the cornea and creating a pocket within the stroma for accommodating the lens, the method being accomplished without forming a flap incision.
摘要:
A method of modifying a cornea of an eye to reduce refractive error, the cornea having a surface and a main optical axis, including the steps of aiming and firing a laser at the cornea of the eye. The laser first separates an internal portion of the cornea forming a first internal surface and a second internal surface, the first internal surface facing in a posterior direction of the cornea and the second internal surface facing in an anterior direction of the cornea, with the first and second internal surfaces forming an internal pocket therebetween. An incision is then made from the surface of the cornea to the internal pocket, and an ocular implant is introduced through the incision and into the internal pocket of the cornea.
摘要:
A wavefront sensor is integrated with a surgical microscope for allowing a doctor to make repeated wavefront measurements of a patient's eye while the patient remains on an operating table in the surgical position. The device includes a wavefront sensor optically aligned with a surgical microscope such that their fields of view at least partially overlap. The inclusion of lightweight, compact diffractive optical components in the wavefront sensor allows the integrated device to be supported on a balancing mechanism above a patient's head during a surgical procedure. As a result, the need to reposition the device and/or the patient between measuring optical properties of the eye and performing surgical procedures on the eye is eliminated. Many surgical procedures may be improved or enhanced using the integrated device, including but not limited to cataract surgery, Conductive Keratoplasty, Lasik surgery, and corneal corrective surgery.
摘要:
Methods and apparatus for improving vision incorporate the effects of biodynamical and biomechanical (biological) responses of the eye. The eye produces a biological response to trauma, such as a LASIK keratectomy or other necessary traumatic procedure in preparation for refractive surgery. By observing the biological response, a prospective treatment to correct higher order aberrations is adjusted to compensate for the biological effects. An improved photorefractive surgery system incorporates one or more suitable diagnostic devices that provide biological response information in such a manner that the patient need not change position from that assumed for the surgical procedure.
摘要:
This invention relates to a method and a device for the complete correction of sight defects in the human eye. Combinations of measuring, and processing methods are described which when applied as disclosed in the invention, make it possible to fully correct sight defects in the human eye. Measuring methods are used which can precisely scan the surface of the cornea and also register other imaging defects in the light path up to the retina. Computer-aided of said measuring results determined when combined with calculation of ideally corrected ocular lenses (for example after cataract operations) or ideally corrected surfaces of the cornea opens up the possibility of manufacturing a patient-specific lens and/or achieving ideal correction of the cornea using preferably a topography-supported spot-scanning-excimer laser system.
摘要:
Embodiments of the present invention relate to methods and pharmacological compositions to treat presbyopia in the human eye. According to the embodiments, pharmacological compositions may be applied to an eye to effect a change in the accommodative ability of the eye by the breaking and reduction of lenticular bonds in the eye that may be responsible for presbyopia. The compositions may be applied in an inactive state and subsequently be activated to achieve a therapeutic effect.
摘要:
A radio frequency amplifier for a system that can correct the patient's vision by reshaping the cornea by applying a proper amount of RF energy. The system includes an electrode that is connected to the output of the radio frequency amplifier and placed in contact with a cornea. The radio frequency amplifier delivers a RF current to the electrode that flows through and denatures the cornea then returns back to the radio frequency amplifier through a return electrode. The electrode can be placed in a circular pattern about the cornea to correct for a hyperopic condition. To effectively provide for vision correction the radio frequency amplifier should ideally provide power at a desired power curve. The radio frequency amplifier is calibrated to provide an actual power curve that is within +/−10% of the desired power curve within the operating range of the procedure. This insures that the right amount of power is applied to the cornea during the specified activation time.