Polish physicists simplify color-sensing cone cell mapping

Physicists from the Institute of Physical Chemistry of the Polish Academy of Sciences (ICTER) and the University of Warsaw have developed a simplified method for mapping cone cells in the living human eye. These cells, categorized into S (short-wave), M (medium-wave), and L (long-wave) types, are responsible for color perception and are most densely packed in the center of the retina.

Previously, distinguishing between these cells—particularly the visually similar L and M types—required complex adaptive optics to correct for the eye's natural optical imperfections and blurring. This traditional approach was costly, complicated, and required specialized operation.

The research team has replaced the need for additional optical correction hardware with computational methods using a specialized form of optical coherence tomography (OCT). This technique analyzes light reflected from tissues to reconstruct structure and record small changes in cell response, offering a more accessible way to study color vision and retinal mosaics.