title: May contain flash photography.
authors.affiliation: Wexham Park Hospital, Slough, Berkshire, UK. jason.candlin@hwph-tr.nhs.uk
authors.forename: Jason
authors.initials: J
authors.lastname: Candlin
mesh_terms: D006801:Humans; D007909:Lenses; D010781:Photography / Q000295:instrumentation* / Q000379:methods