The Retina series explores how technology has changed painting from the inside-out. In these works, Ohtake first makes experimental images by manually altering Polaroid film, which he subsequently enlarges to canvas size using a transfer process. The film transfer then provides the foundation for abstract mixed-media compositions. Ohtake made the first Retina works in 1988-91, then, after an interval of more than two decades, he revisited film that he had stored from the original period. Where previously he manually altered the film, in the recent Retina works the effects also come from the accidental deterioration of the film over time.