a detailed macroscopic view of the human eye iris exploring the intricate anatomy and texture of the pupil

ophthalmologist demonstrating ophthalmology highlighting macroscopic captivating examination educational photograph anatomical coloration variations perception scientific biological exploring intricate showcases structure disorders education reference detailed delicate patterns function textbook diseases anatomy texture closeup reveals details complex nuanced clarity present medical pattern biology optical student science detail health visual system human pupil iriss color macro study view iris eyes