FIELD: medicine.
SUBSTANCE: patient interface for an ophthalmic system comprises: an attachment portion, configured to attach the patient interface to a distal end of the ophthalmic system; a contact portion, configured to dock the patient interface to an eye; and a contact element, coupled to the contact portion, configured to contact a surface of a cornea of the eye as part of the docking of the patient interface to the eye, and having a central portion with central radius of curvature Rc and a peripheral portion with peripheral radius of curvature Rp, wherein Rc is smaller than Rp. Central portion and peripheral portion are joined at an edge having central diameter Dc, and Dc is less than the diameter of the peripheral portion of the cornea (peripheral-cornea) of the eye, wherein the diameter of the peripheral portion of the cornea is in the range of 10 to 12 mm.
EFFECT: use of the invention improves the accuracy of ophthalmic surgical procedures.
23 cl, 5 dwg
