Accession Number : ADD012627

Title :   Accommodative Amplitude and Speed Measuring Instrument.

Descriptive Note : Patent,

Corporate Author : DEPARTMENT OF THE AIR FORCE WASHINGTON DC

Personal Author(s) : Genco,Louis V ; Task,Harry L

Report Date : 21 Oct 1986

Pagination or Media Count : 7

Abstract : A novel instrument and method for measuring the accomodative amplitude and speed of the eye of a subject is described. The instrument for making the measurements according to the present invention comprises a pair of illuminated or luminous visual displays disposed for viewing along an optical axis, the images of the displays superimposed upon each other for viewing by a subject, one of the displays comprising a pattern having plurality of distinct and recognizable orientations with respect to the axis along which it is viewed, an orientation generator for randomly and alternately generating one of the orientations for viewing by the subject, a switch operable by the subject for turning the displays off and indicating the observed orientation of the random pattern, and a recorder for recording the last displayed orientation and the time the displays were on or the time between presentation of one display and the correct identification of the other. (Patents).

Descriptors :   *PATENTS, *MEDICAL EQUIPMENT, *OPTOMETRY, DISPLAY SYSTEMS, ORIENTATION(DIRECTION), LUMINOSITY, VISUAL AIDS, AXES, OPTICAL PROPERTIES, MEASURING INSTRUMENTS, VELOCITY, PATTERNS, EYE, QUICK REACTION, ADAPTATION(PHYSIOLOGY), RETINA, FOCUSING, OPTICAL IMAGES, LENSES, BEAM SPLITTING

Subject Categories : Medical Facilities, Equipment and Supplies
      Optics

Distribution Statement : APPROVED FOR PUBLIC RELEASE