title: Pupillary irradiance distributions for light backscattered in the human eye.
abstract: An investigation of linear knife-edge photoscreening devices for detecting focusing errors, refractive defects and other optical artifacts in the human eye is described. Pupillary irradiance distributions calculated for a model eye are shown to agree qualitatively with distributions recorded experimentally using video frame grabbing equipment. The form of the pupillary irradiance distribution from a cyclopleged human eye supports a diffuse-like characterization for the reflection/scattering processes at the retina. The extreme sensitivity of the instruments enables real-time detection of refractive effects from tear films on the cornea and real-time tracking of floaters.
authors.affiliation: Department of Physics, University of Otago.
authors.forename: I J
authors.initials: IJ
authors.lastname: Hodgkinson
authors.forename: B C
authors.initials: BC
authors.lastname: Khoo
authors.forename: B J
authors.initials: BJ
authors.lastname: Lunt
authors.forename: A C
authors.initials: AC
authors.lastname: Molteno
mesh_terms: D005128:Eye Diseases / Q000175:diagnosis*; D006801:Humans; D007091:Image Processing, Computer-Assisted; D007223:Infant; D008027:Light; D008403:Mass Screening / Q000295:instrumentation*; D008954:Models, Biological; D009885:Ophthalmology / Q000295:instrumentation*; D055095:Optics and Photonics; D011680:Pupil / Q000502:physiology*; D012542:Scattering, Radiation; D014743:Videotape Recording