Detecting binocular eye alignment using signal correlation

A system for determining an alignment status of a patient's eyes, the system comprising:

• a source of polarized light;
• an optical detector disposed to receive polarized light from the source upon being reflected from a left retina of the patient and produce a corresponding left eye electrical signal for circular scans of the left retina and to receive polarized light from the source upon being reflected from a right retina of the patient and produce a corresponding right eye electrical signal for circular scans of the right retina;
• an electronic processor communicatively coupled to the optical detector;
• and
• persistent electronic memory comprising instructions that, when executed by the electronic processor, configure the electronic processor to perform actions comprising:
• determining a correlation of a signal derived from the left eye electrical signal with a signal derived from the right eye electrical signal;
• determining an alignment status of the patient's eyes based on the correlation;
• and
• providing the alignment status.