title: Some instruments used in ophthalmic practice; the objective examination of the refractive condition of the eye.
authors.forename: F W
authors.initials: FW
authors.lastname: ARDERN
mesh_terms: D005123:Eye; D006801:Humans; D009885:Ophthalmology; D012030:Refractive Errors
keywords: EYE; OPHTHALMOLOGY