HealthGlobal issuesHow the human eye worksTo view this video please enable JavaScript, and consider upgrading to a web browser that supports HTML5 videoHealthGlobal issuesJörg Gero Grüner01/04/2024January 4, 2024Lens, pupil, iris, retina - they're words that most of us are familiar with. But how do these elements interact so that our brains can produce an image of the outside world?https://p.dw.com/p/4aVHzAdvertisement