Most clinical instruments are limited to imaging depths of 2 to 3 millimeters, and it is difficult to switch
between imaging the front and back portions of the eye because the eye is composed of elements that bend the light to focus it onto the retina.
Other options include the ability to switch
between the primary
imaging sensor and the telephoto lens via the 2x button, toggles for HDR, flash, portrait mode, switching
between photo and video modes and the
front and rear cameras.