Figure 3 in A Pulsing-Mirror Eye in a Deep-Sea Ostracod

Figure 3. Ray tracing of light imaged on the Gigantocypris sp. retina: (A–B) when the luminous object is distant, the oscillations of the parabolic reflector cause the object to go in and out of focus at the retina, as the reflector is relaxed and then "flattened"; (C–D) when the luminous object is nearby, the oscillations of the parabolic reflector cause little change to the image focused on the retina.