Discover all the clinical cases of the ARI 2021 Congress, the first online ophthalmology meeting in Spain on refractive surgery, cataract and cornea. An eye innovation event that brought together virtually, from October 28 to 30, 2021, more than 90 speakers from all over the world. For the first time in this course, directed by Professor Jorge Alió, the presentation of clinical cases was left open in the Special Session, where any attendee could participate.