Automatic optical path adjustment in home oct

A method of imaging a retina of a user, the method comprising:

• controlling, by a control unit, a reference arm length adjustment module of an OCT imaging device during an initial imaging of the retina of the user to vary a reference arm length of the OCT imaging device within a reference arm length adjustment range to identify an initial imaging reference arm length for which an OCT image detector of the OCT imaging device produces an OCT signal corresponding to the retina of the user;
• determining, by the control unit, a user specific range of reference arm lengths, based on the initial imaging reference arm length, that covers a smaller range of reference arm lengths than the reference arm length adjustment range;
• and
• controlling the reference arm length adjustment module, by the control unit, during an imaging of the retina of the user subsequent to the initial imaging of the retina of the user to vary the reference arm length to search within the user specific range of reference arm lengths to identify a subsequent imaging reference arm length for which the OCT image detector produces an OCT signal corresponding to the retina of the user.