title: Editorial comment to Otto Albert von Pflugk's first description of graded strabismus surgery.
authors.forename: Gerold H
authors.initials: GH
authors.lastname: Kolling
mesh_terms: D005858:Germany; D049672:History, 19th Century; D049673:History, 20th Century; D006801:Humans; D013508:Ophthalmologic Surgical Procedures / Q000266:history* / Q000379:methods; D013285:Strabismus / Q000266:history* / Q000601:surgery