[Problem] To provide a close-up imaging device whereby both imaging of an anterior ocular segment and imaging of an ocular fundus can easily be performed by attaching the close-up imaging device to a smartphone or other mobile terminal. [Solution] The above problem is solved by a close-up imaging device 1B detachably mounted to a mobile terminal 9 provided with a light source 92 and an imaging camera lens 91, the close-up imaging device 1B being provided with a color filter member 97 detachably provided on the light source 92, and a convex lens member 93 detachably provided on the camera lens 91, imaging of an anterior ocular segment being performed by removing the color filter member 97 and attaching the convex lens member 93, and an injury of the anterior ocular segment being observed by attaching the color filter member 97 and attaching the convex lens member 93. A slit light formation member for forming light from the light source 92 into slit light through use of a cylindrical lens, or a tubular member having a convex lens at the distal end thereof may furthermore be detachably provided.