Close-up photo of an eye (IMAGE) University of New South Wales Caption The pupillary reflex is an adaption that optimises the amount of light hitting the retina, changing, even, in response to imagined objects - not so for aphantasic individuals. Photo: Unsplash/Amanda Dalbjorn Credit Amanda Dalbjorn/Unsplash Usage Restrictions Credit must be given to the creator. License CC BY Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.