Low-cost diffuser-based computational funduscope

Diffuser-based sensing has shown potentials in inexpensive and compact optical systems. Here we demonstrate a low-cost diffuser-based computational funduscope that can recover pathological features of the model eye fundus. Our system implements an infinite-conjugate design by relaying the ocular lens onto the diffuser which provides shift-invariance across a wide field-of-view (FOV). Our experiments show that fundus images can be reconstructed over 33 degree FOV and our device is robust to 4D refractive error using a single point-spread-function.