An ophthalmological device for refractive correction of a cornea comprises a laser source, a focusing optical module, a scanner system and an electronic circuit. The electronic circuit is configured to control the scanner system to move the focal spot of the pulsed laser beam generated by the laser source to generate a first part of a void volume ablating cornea tissue inside the first part of the void volume, and to generate a separated second part of the void volume by separating the second part of the void volume as piece of cornea tissue to be removed from the void volume through an incision in the cornea, whereby at least a part of the separated second part is separated from the cornea by the ablated first part.

An ophthalmological device for refractive correction of a cornea comprises a laser source, a focusing optical module, a scanner system and an electronic circuit. The electronic circuit is configured to control the scanner system to move the focal spot of the pulsed laser beam generated by the laser source to generate a first part of a void volume ablating cornea tissue inside the first part of the void volume, and to generate a separated second part of the void volume by separating the second part of the void volume as piece of cornea tissue to be removed from the void volume through an incision in the cornea, whereby at least a part of the separated second part is separated from the cornea by the ablated first part.

A patient interface device for an ophthalmic surgical laser system includes a lens cone component for coupling to the laser system and a suction ring component for coupling to the patient’s eye. The suction ring includes a gripper with an opening for receiving and retaining the lens cone, and a flexible skirt joined to the gripper for coupling to the eye with a vacuum force. The flexible skirt includes a circular inner edge and a circular outer edge for contacting the eye surface, and a plurality of circumferentially distributed scleral support protrusions protruding from a circumferential side wall. The end surface of the scleral support protrusions are sloped in a side cross-sectional view. The scleral support protrusions have a length to width ratio from 1.1 to 2.1, and an arc-angle ratio of the scleral support protrusions to the gaps between them is from 2.2 to 3.0. The scleral support protrusions contact the surface of the eye when the skirt is docked to the eye, which minimize intraocular pressure increase due to docking and applanation while still achieving a good vacuum seal between the suction ring and the eye. The scleral support protrusions function to prevent major deformation of the sclera when the cornea is applanated.

A patient interface device for an ophthalmic surgical laser system includes a lens cone component for coupling to the laser system and a suction ring component for coupling to the patient’s eye. The suction ring includes a gripper with an opening for receiving and retaining the lens cone, and a flexible skirt joined to the gripper for coupling to the eye with a vacuum force. The flexible skirt includes a circular inner edge and a circular outer edge for contacting the eye surface, and a plurality of circumferentially distributed scleral support protrusions protruding from a circumferential side wall. The end surface of the scleral support protrusions are sloped in a side cross-sectional view. The scleral support protrusions have a length to width ratio from 1.1 to 2.1, and an arc-angle ratio of the scleral support protrusions to the gaps between them is from 2.2 to 3.0. The scleral support protrusions contact the surface of the eye when the skirt is docked to the eye, which minimize intraocular pressure increase due to docking and applanation while still achieving a good vacuum seal between the suction ring and the eye. The scleral support protrusions function to prevent major deformation of the sclera when the cornea is applanated.

Systems and methods automatically locate optical surfaces of an eye and automatically generate surface models of the optical surfaces. A method includes OCT scanning of an eye. Returning portions of a sample beam are processed to locate a point on the optical surface and first locations on the optical surface within a first radial distance of the point. A first surface model of the optical surface is generated based on the location of the point and the first locations. Returning portions of the sample beam are processed so as to detect second locations on the optical surface beyond the first radial distance and within a second radial distance from the point. A second surface model of the optical surface is generated based on the location of the point on the optical surface and the first and second locations on the optical surface.

A device for irradiation of the eye of a living subject with light such as UV light includes a structure (20) adapted to overlie the outer surface of the eye, the structure having an axis (28, 128) extending in a downward direction (D) towards the eye when the structure overlies the eye. A light scattering element (70, 158, 141) within the structure includes a peripheral portion remote from the axis and a central portion adjacent the axis. A plurality of transmission optical fibers (42, 157) in optical communication with the peripheral portion of the light scattering element at a plurality of locations spaced around the axis.

A device for irradiation of the eye of a living subject with light such as UV light includes a structure (20) adapted to overlie the outer surface of the eye, the structure having an axis (28, 128) extending in a downward direction (D) towards the eye when the structure overlies the eye. A light scattering element (70, 158, 141) within the structure includes a peripheral portion remote from the axis and a central portion adjacent the axis. A plurality of transmission optical fibers (42, 157) in optical communication with the peripheral portion of the light scattering element at a plurality of locations spaced around the axis.

Disclosed is a patient interface for affixment on onto a patient eye, said patient interface including: a negative-pressure cavity designed for fluidic coupling to the patient eye; a first negative pressure interface with a first negative pressure aperture for fluidically coupling the negative-pressure cavity to a negative-pressure device to charge the negative pressure cavity with a negative pressure; a second negative pressure interface with a second negative pressure aperture for fluidically coupling the negative-pressure cavity to the negative-pressure device to charge the negative cavity with a negative pressure;
wherein the first negative pressure aperture and the second negative pressure aperture are arranged in a wall of the negative pressure cavity separate from and in close vicinity to each other.

Disclosed is a patient interface for affixment on onto a patient eye, said patient interface including: a negative-pressure cavity designed for fluidic coupling to the patient eye; a first negative pressure interface with a first negative pressure aperture for fluidically coupling the negative-pressure cavity to a negative-pressure device to charge the negative pressure cavity with a negative pressure; a second negative pressure interface with a second negative pressure aperture for fluidically coupling the negative-pressure cavity to the negative-pressure device to charge the negative cavity with a negative pressure;
wherein the first negative pressure aperture and the second negative pressure aperture are arranged in a wall of the negative pressure cavity separate from and in close vicinity to each other.

A method for aligning a system for laser-based ametropia correction relative to a patient's eye to be treated is disclosed. Predefined pre-operative measurement data which characterize at least predetermined structures of the patient's eye is provided. The predetermined structures include a part of the patient's eye to be treated. In addition, the method includes measuring at least one part of the predetermined structures of the patient's eye using an OCT system immediately before and/or during treatment for ametropia correction of the patient's eye and providing OCT measurement data, and comparing the OCT measurement data and the predefined pre-operative measurement data and preparing comparative data. The method also includes ascertaining a position and/or orientation of the part of the patient's eye to be treated relative to the system and aligning the system relative to the patient's eye using the ascertained position and/or orientation of the part of the patient's eye.