title: "Wool over eyes": Holmgren's Skeins and Thomson's Stick.
authors.affiliation: Museum of the Royal College of Ophthalmologists, London, UK.
authors.forename: Richard
authors.initials: R
authors.lastname: Keeler
authors.forename: Arun D
authors.initials: AD
authors.lastname: Singh
authors.forename: Harminder S
authors.initials: HS
authors.lastname: Dua
mesh_terms: D003119:Color Perception Tests / Q000266:history* / Q000379:methods; D003117:Color Vision Defects / Q000175:diagnosis / Q000266:history*; D049672:History, 19th Century; D009885:Ophthalmology / Q000266:history*