An optical coherence tomography-based system comprising: an optical coherence tomography device configured to obtain optical coherence tomography scans of: (a) at least one first anterior eye region of a first eye and a second eye of a user ; and (b) at least one of a second intermediate or posterior eye region of the first eye and the second eye of the user , the optical coherence tomography device comprising: a first eyepiece; a second eyepiece; and an interpupillary distance adjustment device configured to detect the pupil positions of each eye of the user from B-scans or C-scans of the anterior chambers of both eyes to automatically adjust a distance between the first eyepiece and the second eyepiece to match or substantially conform to an interpupillary distance between the eyes of the user; a processor configured to analyze the optical coherence tomography scans or to generate an optical coherence tomography-based image based on the optical coherence tomography scans; and an output device configured to output a report based on the optical coherence tomography-based image or the analysis of the optical coherence tomography scans. an optical coherence tomography device configured to obtain optical coherence tomography scans of: (a) at least one first anterior eye region of a first eye and a second eye of a user ; and (b) at least one of a second intermediate or posterior eye region of the first eye and the second eye of the user , the optical coherence tomography device comprising: a first eyepiece; a second eyepiece; and an interpupillary distance adjustment device configured to detect the pupil positions of each eye of the user from B-scans or C-scans of the anterior chambers of both eyes to automatically adjust a distance between the first eyepiece and the second eyepiece to match or substantially conform to an interpupillary distance between the eyes of the user; (a) at least one first anterior eye region of a first eye and a second eye of a user ; and (b) at least one of a second intermediate or posterior eye region of the first eye and the second eye of the user , the optical coherence tomography device comprising: a first eyepiece; a second eyepiece; and an interpupillary distance adjustment device configured to detect the pupil positions of each eye of the user from B-scans or C-scans of the anterior chambers of both eyes to automatically adjust a distance between the first eyepiece and the second eyepiece to match or substantially conform to an interpupillary distance between the eyes of the user; a first eyepiece; a second eyepiece; and an interpupillary distance adjustment device configured to detect the pupil positions of each eye of the user from B-scans or C-scans of the anterior chambers of both eyes to automatically adjust a distance between the first eyepiece and the second eyepiece to match or substantially conform to an interpupillary distance between the eyes of the user; a processor configured to analyze the optical coherence tomography scans or to generate an optical coherence tomography-based image based on the optical coherence tomography scans; and an output device configured to output a report based on the optical coherence tomography-based image or the analysis of the optical coherence tomography scans. <EOS>