Biometric authentication in ophthalmic devices

A system, comprising:

• an iris imaging module including:
• a light source configured to illuminate iris of an eye with an incident light;
• and
• a camera configured to capture an image of the iris, the image including a reflection of the incident light on the eye;
• a proximity sensor in communication with the iris imaging module and configured to measure a size of the iris;
• and
• an iris authentication module including a memory and a processor in communication with the memory, wherein the iris authentication module is configured to:
• determine, based on the reflection of the incident light on the eye in the image, a curvature of the eye, and
• authenticate the iris based on the curvature of the eye.

A method, comprising:

• providing an iris recognition system including at least an imaging module and a proximity sensor;
• capturing an image of a patient's iris using the imaging module;
• determining a distance of the iris from the proximity sensor;
• determining a size of the iris based on the determined distance and the captured image;
• determining, based on the captured image, a curvature of a cornea of the patient;
• and
• comparing the captured image and at least one of the size of the iris or the curvature of the cornea with corresponding data stored in a database to confirm an identity of the patient, wherein the confirmation is based on a matching threshold.