To improve the precision of ophthalmic surgical procedures by reducing corneal wrinkling, a patient interface for an ophthalmic system can include 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 a central radius of curvature Rc and a peripheral portion with a peripheral radius of curvature Rp, wherein Rc is smaller than Rp.為了藉由減少角膜皺褶來改良眼科手術操作的精確度，眼科系統用之病人介面可包括一接附部分，其經組裝以將該病人介面接附至該眼科系統的遠端；一接觸部分，其經組裝以將該病人介面停駐至眼睛；及一接觸元件，其耦合至該接觸部分，其經組裝以接觸眼睛角膜的表面作為該病人介面停駐至眼睛的部分，及其具有一具有中央曲率半徑Rc的中央部分及一具有周圍曲率半徑Rp的周圍部分，其中Rc係小於Rp。
