title: The Oqual: a new device for measuring the optical quality of the anterior segment of the human eye.
abstract: An attachment to (Haag-Streit and Topcon) slit-lamps is described. This permits projection of a patterned target into the eye and the visual or photographic analysis of the details of the image reflected from the posterior surface of the crystalline lens. A numerical assessment can then be made of the optical quality of the crystalline lens as a whole, although scanning it is also possible. The attachment has also been used successfully for the objective assessment of the patient's post-operative visual acuity following kerato-refractive procedures.
authors.affiliation: Professorial Unit, Moorfields Eye Hospital, London, U.K.
authors.forename: R
authors.initials: R
authors.lastname: Weale
mesh_terms: D000869:Anterior Eye Segment / Q000502:physiology*; D003315:Cornea / Q000503:physiopathology; D006801:Humans; D009885:Ophthalmology / Q000295:instrumentation*; D055095:Optics and Photonics; D014792:Visual Acuity / Q000502:physiology