Ophthalmic viewing devices

An ophthalmic viewing device (“viewing device”), comprising:

• a mounting feature configured for mounting the viewing device to a visualization device;
• an upper arm connected to the mounting feature proximate a proximate end of the upper arm;
• a lower arm connected to the upper arm proximate a distal end of the upper arm;
• a first mirror movably connected to the mounting feature and having at least a first mirror position and a second mirror position;
• a second mirror connected to the upper arm;
• and
• a lens assembly having a lens frame configured to shift between a first lens frame position and a second lens frame position, the lens frame having a central cavity configured for receiving a lens, wherein:
• in a first configuration of the viewing device:
• the lens frame is in the first lens frame position, such that a plane of the central cavity is perpendicular to an axis of the visualization device (“visualization device axis”) along an on-axis optical path between a patient's eye and the visualization device for viewing a first field of view of the patient's eye, the on-axis optical path comprising a first path traversed by light reflected from the patient's eye to the visualization device;
• and
• the first mirror is in the first mirror position outside of the on-axis optical path;
• and
• in a second configuration of the viewing device:
• the lens frame is in the second lens frame position, wherein in the second lens frame position the plane of the central cavity is disposed at a frame angle relative to the visualization device axis, such that the plane of the central cavity is perpendicular to a first angled axis of an off-axis optical path, the off-axis optical path comprising a second path traversed by the light reflected from the patient's eye to the visualization device;
• the first mirror is in the second mirror position, wherein in the second mirror position, the first mirror:
• at least partially intercepts the on-axis optical path, and
• is positioned at a first angle relative to the visualization device axis for redirecting the off-axis optical path, received along a second angled axis from the second mirror, towards the visualization device;
• and
• the second mirror is:
• positioned within the off-axis optical path at a second angle relative to the visualization device axis, and
• configured to redirect the light reflected from the patient's eye along the off-axis optical path, received along the first angled axis from the lens in the lens frame in the second lens frame position, towards the first mirror for viewing a second field of view of the patient's eye that is different from the first field of view.