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1. US5886770 - Device for use in the examination of the visual field of a subject

Office
États-Unis d'Amérique
Numéro de la demande 08619471
Date de la demande 22.03.1996
Numéro de publication 5886770
Date de publication 23.03.1999
Numéro de délivrance 5886770
Date de délivrance 23.03.1999
Type de publication A
CIB
A61B 3/02
ANÉCESSITÉS COURANTES DE LA VIE
61SCIENCES MÉDICALE OU VÉTÉRINAIRE; HYGIÈNE
BDIAGNOSTIC; CHIRURGIE; IDENTIFICATION
3Appareils pour l'examen optique des yeux; Appareils pour l'examen clinique des yeux
02du type à mesure subjective, c. à d. appareils de d’examen nécessitant la participation active du patient
A61B 3/024
ANÉCESSITÉS COURANTES DE LA VIE
61SCIENCES MÉDICALE OU VÉTÉRINAIRE; HYGIÈNE
BDIAGNOSTIC; CHIRURGIE; IDENTIFICATION
3Appareils pour l'examen optique des yeux; Appareils pour l'examen clinique des yeux
02du type à mesure subjective, c. à d. appareils de d’examen nécessitant la participation active du patient
024pour la détermination du champ de vision, p.ex. périmètres
CPC
A61B 3/024
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
BDIAGNOSIS; SURGERY; IDENTIFICATION
3Apparatus for testing the eyes; Instruments for examining the eyes
02Subjective types, i.e. testing apparatus requiring the active assistance of the patient
024for determining the visual field, e.g. perimeter types
Déposants University Court of the University of Glasgow
Inventeurs Damato Bertil Eric
Mandataires Jefferson Perkins Foley & Lardner
Données relatives à la priorité 9319588 22.09.1993 GB
Titre
(EN) Device for use in the examination of the visual field of a subject
Abrégé
(EN)

A visual field test device (10) is disclosed which allows a larger area of the visual field to be examined and allows use of the device for testing for diseases of the eye and brain, for example, glaucoma. The device consists of a chart (12) which has visual target patterns (13) for the left and right eyes and which is foldable about fold line (45) so that the visual targets are on front and rear surfaces of the device (10). Each visual target consists of about 60 fixation targets (14), represented by sequential numbers, arranged to spiral outwards along lines (16) to facilitate use by test subjects. A plurality of test stimuli (21) are located on a rotatable disc (18) and the chart (12) has a central aperture (20) through which a selected test stimuli (21) can be viewed. Different test stimuli can be used as required and in one embodiment a moveable cover (22) can be used to obscure the test stimuli. The test subject follows the fixation targets (14) sequentially and announces, for each fixation target, whether the test stimuli can be seen. This allows a map of the subject's visual field to be created, for each eye to ensure that the eye examination is more foolproof and allows easier variation in stimulus size and intensity.

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