A patient interface for an ophthalmic system can include an attachment module, attachable to the ophthalmic system, and a contact module, configured to accommodate a viscoelastic substance between the patient interface and a procedure eye. The viscoelastic substance can include a fluid, a liquid, a
A patient interface for an ophthalmic system can include an attachment module, attachable to the ophthalmic system, and a contact module, configured to accommodate a viscoelastic substance between the patient interface and a procedure eye. The viscoelastic substance can include a fluid, a liquid, a gel, a cream, an artificial tear, a film, an elastic material, or a viscous material. The refractive index of the viscoelastic substance can be within a range of approximately 1.24-1.52 at an operating wavelength of the ophthalmic system. The patient interface can further include input ports, output ports, and a suction system. It can be an integrated design or a multi-piece patient interface. The viscoelastic substance can be provided by injection, on the cornea, at the contact module, or in a space bounded by soft elastic films or membranes, such as in a bag.
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1. A patient interface system for an ophthalmic system, comprising: a multi-piece patient interface, comprising an attachment module, attachable to the ophthalmic system;a contact module, configured to be docked to a procedure eye,to accommodate a viscoelastic substance in an accommodation space at
1. A patient interface system for an ophthalmic system, comprising: a multi-piece patient interface, comprising an attachment module, attachable to the ophthalmic system;a contact module, configured to be docked to a procedure eye,to accommodate a viscoelastic substance in an accommodation space at least partially bordered by the contact module and by the procedure eye, andto get connected to the attachment module; anda suction ring, coupled to the contact module, connectable to a vacuum suction system to create a partial vacuum between the suction ring and the procedure eye to reduce a mobility of the procedure eye for an ophthalmic procedure; anda degassing subsystem, coupled to the patient interface, comprising at least one of a pressure-reduction system, a heating system, a membrane degasification system, an inert gas substitution system, a surface tension manipulating system, and a reductant-adding system. 2. The patient interface system of claim 1, wherein: the accommodated viscoelastic substance comprises at least one of a fluid, a liquid, a gel, a cream, an artificial tear, a film, an elastic material, and a viscous material. 3. The patient interface system of claim 1, wherein: the accommodated viscoelastic substance has a refractive index closer to a refractive index of a cornea of the procedure eye than to a refractive index of air at an operating wavelength of the ophthalmic system. 4. The patient interface system of claim 1, wherein: the accommodated viscoelastic substance has a refractive index within a range of 1.24-1.52 at an operating wavelength of the ophthalmic system. 5. The patient interface system of claim 1, wherein: the accommodated viscoelastic substance has a refractive index within a range of 1.35-1.41 at an operating wavelength of the ophthalmic system. 6. The patient interface system of claim 1, wherein: a component of the patient interface is at least one of disposable, sterilizable, and reusable. 7. The patient interface system of claim 1, wherein: the contact module is configured to accommodate the viscoelastic substance after the contact module has been docked to the procedure eye. 8. The patient interface system of claim 1, wherein: the contact module is configured to accommodate the viscoelastic substance being introduced into the accommodation space. 9. The patient interface system of claim 8, the patient interface comprising: one or more input ports to introduce the viscoelastic substance into the accommodation space. 10. The patient interface system of claim 1, the patient interface comprising: one or more output openings configured to enable a discharge of at least one of air, gas, and the viscoelastic substance from the accommodation space. 11. The patient interface system of claim 1, the patient interface comprising: a vent port, configured to couple the contact module to the degassing subsystem. 12. The patient interface system of claim 1, wherein: the suction ring is coupled to the contact module through a suction port; andthe degassing subsystem is coupled to the contact module through an output port. 13. The patient interface system of claim 1, wherein: the contact module is configured to accommodate the viscoelastic substance before getting connected to the attachment module. 14. The patient interface system of claim 1, wherein: the multi-piece patient interface is a two-piece patient interface, comprising the attachment module and the contact module. 15. The patient interface system of claim 1, the attachment module comprising: a distal lens. 16. The patient interface of claim 15, wherein: the patient interface is configured so that the distal lens does not contact the cornea of the procedure eye after the contact module was docked to the procedure eye and the attachment module was connected to the contact module. 17. The patient interface system of claim 1, wherein: the patient interface is configured to keep a change of an apical curvature of a cornea of the procedure eye below 10% upon an attachment of the patient interface to the procedure eye. 18. The patient interface system of claim 17, wherein: the patient interface is configured to keep a change of the apical curvature of the cornea of the procedure eye below 3% upon the attachment of the patient interface to the procedure eye. 19. The patient interface system of claim 1, the ophthalmic system comprising at least one of: an imaging system;a diagnostic system; andan ophthalmic surgical laser system. 20. The patient interface system of claim 1, the suction ring comprising: more than one suction chamber.
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