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If the eyes are the windows to the soul, then the London-based photographer known only as Rankin offers a spectacular view. His Eyescapes collection features close-ups of the irises of friends, relatives and clients. Each image is compelling, and reveals that what appears to be a uniform colour is really a kaleidoscope of hues, iridescent and intricately patterned.

And while Rankin explores the eye’s beautiful imagery, Simon Ings explains the science in his new book, The Eye: A Natural History. We find Rankin’s work so appealing, says Ings, because our eyes evolved to communicate emotion and meaning. If you want to know how a potential…