There is no glue, no cutting—only precision, patience, and a deep understanding of form.

Images that have long been recognized to deceive the human eye and brain are called visual illusions. Even the most perceptive eyes can be tricked by these illusions. Because they can draw in readers, ...

Professor Michael Bach works in the research department at the University Eye Hospital in Freiburg. Through vision-related pathologies, he has taken a very close look at how the eye works and the ...