WO2016167091A1 - Dispositif d'examen de la vision, procédé de correction de cible visuelle pour dispositif d'examen de la vision, et dispositif d'affichage - Google Patents

Dispositif d'examen de la vision, procédé de correction de cible visuelle pour dispositif d'examen de la vision, et dispositif d'affichage Download PDF

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Publication number
WO2016167091A1
WO2016167091A1 PCT/JP2016/059213 JP2016059213W WO2016167091A1 WO 2016167091 A1 WO2016167091 A1 WO 2016167091A1 JP 2016059213 W JP2016059213 W JP 2016059213W WO 2016167091 A1 WO2016167091 A1 WO 2016167091A1
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WO
WIPO (PCT)
Prior art keywords
eyeball
image
subject
head
display
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Application number
PCT/JP2016/059213
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English (en)
Japanese (ja)
Inventor
井上　智
健三 山中
伸司 木村
長太 松本
Original Assignee
株式会社クリュートメディカルシステムズ
学校法人 近畿大学
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Application filed by 株式会社クリュートメディカルシステムズ, 学校法人 近畿大学 filed Critical 株式会社クリュートメディカルシステムズ
Publication of WO2016167091A1 publication Critical patent/WO2016167091A1/fr

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    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B3/00—Apparatus for testing the eyes; Instruments for examining the eyes
    • A61B3/02—Subjective types, i.e. testing apparatus requiring the active assistance of the patient
    • A61B3/024—Subjective types, i.e. testing apparatus requiring the active assistance of the patient for determining the visual field, e.g. perimeter types
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B3/00—Apparatus for testing the eyes; Instruments for examining the eyes
    • A61B3/02—Subjective types, i.e. testing apparatus requiring the active assistance of the patient
    • A61B3/028—Subjective types, i.e. testing apparatus requiring the active assistance of the patient for testing visual acuity; for determination of refraction, e.g. phoropters
    • A61B3/032—Devices for presenting test symbols or characters, e.g. test chart projectors
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B3/00—Apparatus for testing the eyes; Instruments for examining the eyes
    • A61B3/10—Objective types, i.e. instruments for examining the eyes independent of the patients' perceptions or reactions
    • A61B3/113—Objective types, i.e. instruments for examining the eyes independent of the patients' perceptions or reactions for determining or recording eye movement

Definitions

  • a head-mounted visual inspection apparatus a visual target correction method for a visual inspection apparatus, and a display device that accurately perform visual field inspection even when the eyeball is rotated.
  • FIG. 2 shows an optical system (display optical system 200 and observation optical system 300) corresponding to one eye.
  • the optical systems corresponding to the left and right eyes have the same configuration. have.
  • the optical systems corresponding to the left and right eyes will be described without distinction, and the L and R symbols will be omitted.
  • the mirror 220 is configured to reflect light of a specific wavelength and transmit other light. Specifically, the mirror 220 is configured as a cold mirror that reflects visible light and transmits infrared light, for example.
  • the mirror 220 is provided on the side opposite to the eyeball 20 on the optical axis 280a of the first lens 210 with the first lens 210 interposed therebetween.
  • the mirror 220 is provided to be inclined at a predetermined angle with respect to the optical axis 280a of the first lens 210.
  • the mirror 220 transmits infrared light reflected on the surface of the eyeball 20 described later to the side opposite to the eyeball 20 of the mirror 220.
  • the mirror 220 shared with the display optical system 200 transmits infrared light irradiated from the light source 310 and reflected by the surface of the eyeball 20.
  • the top stimulation method may be used.
  • the reference image holding unit 442 holds the image of the eyeball 20 when the subject's head is in the reference state as the “reference image P1” (S110).
  • the center of the reference image P1 is the center of the eyeball 20. (Ie, the center of the pupil 21). It is assumed that the center of the image captured by the image sensor 340 does not move from the center of the eyeball 20 in subsequent visual field inspections.
  • a line that passes through the center of the eyeball 20 and is parallel to the vertical direction of the head (UD direction) is referred to as a “head direction centerline 20c of the eyeball 20”.
  • FIG. 7A is a diagram illustrating a reference image
  • FIG. 7B is a diagram illustrating an in-use image.
  • the control unit 400 acquires the reference image P1, and then removes the eyelid 20 from the eyeball 20 to extract the iris 24 from the reference image P1.
  • Image processing such as processing, contrast adjustment processing for adjusting the contrast of the iris 24 pattern, and edge enhancement processing for enhancing the edge of the iris 24 pattern is performed.
  • FIG. 7B after acquiring the in-use image P2, the control unit 400 obtains the in-use image P2 and performs the same iris extraction process and contrast adjustment process as the reference image P2.
  • Image processing such as edge enhancement processing is performed.
  • FIG. 7C is a diagram when pattern matching is performed on the reference image and the image in use.
  • the rotation angle measuring unit 446 performs pattern matching between the image of the iris 24 in the in-use image P2 and the image of the iris 24 in the reference image P1, for example, as follows. Then, the rotation angle of the in-use image P2 with respect to the reference image P1 is measured.
  • the reference image P1 is superimposed on the in-use image P2, and the difference between the image of the iris 24 in the reference image P1 and the image of the iris 24 in the in-use image P2 is detected.
  • the reference image P1 is gradually rotated around the center (pupil 21) of the reference image P1, and the difference between the image of the iris 24 in the rotated reference image P1 and the image of the iris 24 in the in-use image P2 is different. Repeat until is minimized.
  • the angle at which the reference image P1 is rotated is set to the angle of the in-use image P2 with respect to the reference image P1.
  • the rotation angle is measured (calculated) (S130).
  • the rotation angle ( ⁇ ) of the in-use image P2 with respect to the reference image P1 thus obtained corresponds to the rotation angle ( ⁇ ) of the eyeball 20 when the subject is in use.
  • the rotation angle ( ⁇ ) of the in-use image P2 with respect to the reference image P1 is used as the rotation angle ( ⁇ ) of the eyeball 20 to correct the presentation position of the visual target.
  • the fixed target O is shown as a black cross and the target T1 is shown as a black dot.
  • the background is dark with a predetermined brightness (luminance) or less.
  • the fixed target O is a cross having a predetermined brightness (luminance)
  • the target T1 is a point having a predetermined brightness (luminance) for inspection.
  • FIG.8 (b) is a figure which shows a visual target when a subject is a use condition.
  • the display element 240 that presents the target T1 is mounted on the head as a head-mounted type. Tilted together (follows the tilt of the head). If the display screen TP1 of the display element 240 is maintained, the presentation position of the visual target T1 is the presentation position of the visual target T1 when the subject's head is in the reference state (dotted line in FIG. 8B). The same as the circle).
  • the eyeball 20 of the subject is rotated at an angle of ⁇ in the direction opposite to the tilt direction of the head.
  • the presentation position of the visual target T1 with respect to the eyeball 20 at the time of rotation is relatively shifted in the direction opposite to the rotational direction of the eyeball 20 from the presentation position of the visual target T1 with respect to the eyeball 20 before the rotation.
  • an accurate inspection cannot be performed on the target presentation position of the target T1 on the retina 22.
  • control unit 400 determines whether or not to end the visual field inspection (S150).
  • the steps from the in-use image acquisition step S120 to the target correction step S140 are repeated again.
  • the series of steps is finished.
  • the image of the eyeball 20 imaged by the image sensor 340 is held as the reference image P1.
  • the in-use image P2 which is the image of the eyeball 20 imaged by the image sensor 340, is pattern-matched with the reference image P1, and the reference image P1.
  • the rotation angle - ⁇ of the in-use image P2 with respect to is measured.
  • the rotation angle ⁇ of the in-use image P2 with respect to the reference image P1 thus obtained corresponds to the rotation angle ⁇ of the eyeball 20 when the subject is in use.
  • FIG. 9 is a schematic diagram illustrating a configuration of a control unit in a display device according to another embodiment.
  • the display device 12 of the present embodiment is configured to display a predetermined image for the user, and the control unit 400 serves as the image control unit 470.
  • the image control unit 470 is a function for controlling the display element 240 to display a predetermined image.
  • the image displayed on the display element 240 is not particularly limited, and may be either a still image or a moving image (game or movie video).
  • the image to be displayed is not limited to a two-dimensional image, and may be a three-dimensional image so as to be different on the left and right.
  • the presentation position of the visual target is corrected (moved) within the screen of the display element 240 in accordance with the rotation angle ⁇ of the eyeball 20 in the visual target correction step S140.
  • the display element itself may be rotated about the optical axis according to the rotation angle of the eyeball.

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  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Medical Informatics (AREA)
  • Surgery (AREA)
  • Biophysics (AREA)
  • Biomedical Technology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Physics & Mathematics (AREA)
  • Molecular Biology (AREA)
  • Ophthalmology & Optometry (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Human Computer Interaction (AREA)
  • Eye Examination Apparatus (AREA)

Abstract

L'invention concerne un dispositif d'examen de la vision placé sur la tête qui réalise de manière précise un examen du champ visuel même lorsque le globe oculaire a pivoté. L'invention concerne également un procédé de correction de cible visuelle pour le dispositif d'examen de la vision. L'invention concerne également un dispositif d'affichage. Le dispositif d'examen de la vision est un dispositif d'examen de la vision placé sur la tête qui est placé sur la tête d'une personne examinée. Le dispositif d'examen de la vision comporte : un moyen d'affichage qui présente une cible visuelle à un globe oculaire de la personne examinée; un moyen d'imagerie qui capture des images du globe oculaire; un moyen de détection de rotation qui, sur la base des images du globe oculaire capturées par le moyen d'imagerie, détecte la rotation du globe oculaire qui résulte de l'inclinaison de la tête de la personne examinée dans la direction gauche-droite; et un moyen de correction de cible visuelle qui, en fonction de la rotation du globe oculaire, corrige la position de présentation de la cible visuelle qui est présentée par le moyen d'affichage.
PCT/JP2016/059213 2015-04-13 2016-03-23 Dispositif d'examen de la vision, procédé de correction de cible visuelle pour dispositif d'examen de la vision, et dispositif d'affichage WO2016167091A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2015-081975 2015-04-13
JP2015081975A JP2016198387A (ja) 2015-04-13 2015-04-13 視覚検査装置、視覚検査装置の視標補正方法、および表示装置

Publications (1)

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WO2016167091A1 true WO2016167091A1 (fr) 2016-10-20

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PCT/JP2016/059213 WO2016167091A1 (fr) 2015-04-13 2016-03-23 Dispositif d'examen de la vision, procédé de correction de cible visuelle pour dispositif d'examen de la vision, et dispositif d'affichage

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JP (1) JP2016198387A (fr)
WO (1) WO2016167091A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3951482A4 (fr) * 2019-03-29 2022-04-20 Hoya Lens Thailand Ltd. Procédé de mesure pour mesurer une caractéristique de rotation d'un globe oculaire d'un sujet et procédé de réglage pour lentille à puissance progressive

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN209404742U (zh) * 2018-04-03 2019-09-20 林臣 一种视野计

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2003235800A (ja) * 2002-02-20 2003-08-26 Nidek Co Ltd 眼の検査用機器
WO2006030658A1 (fr) * 2004-09-15 2006-03-23 Matsushita Electric Works, Ltd. Diopsimètre
WO2013125707A1 (fr) * 2012-02-24 2013-08-29 国立大学法人筑波大学 Dispositif de mesure de cycloduction, procédé de mesure de cycloduction, programme de mesure de cycloduction
JP2014104174A (ja) * 2012-11-28 2014-06-09 Crewt Medical Systems Inc 視覚機能計測装置

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2003235800A (ja) * 2002-02-20 2003-08-26 Nidek Co Ltd 眼の検査用機器
WO2006030658A1 (fr) * 2004-09-15 2006-03-23 Matsushita Electric Works, Ltd. Diopsimètre
WO2013125707A1 (fr) * 2012-02-24 2013-08-29 国立大学法人筑波大学 Dispositif de mesure de cycloduction, procédé de mesure de cycloduction, programme de mesure de cycloduction
JP2014104174A (ja) * 2012-11-28 2014-06-09 Crewt Medical Systems Inc 視覚機能計測装置

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3951482A4 (fr) * 2019-03-29 2022-04-20 Hoya Lens Thailand Ltd. Procédé de mesure pour mesurer une caractéristique de rotation d'un globe oculaire d'un sujet et procédé de réglage pour lentille à puissance progressive

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JP2016198387A (ja) 2016-12-01

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