EP0595817A1 - Dispositif binoculaire de determination de la refraction - Google Patents

Dispositif binoculaire de determination de la refraction

Info

Publication number
EP0595817A1
EP0595817A1 EP92908565A EP92908565A EP0595817A1 EP 0595817 A1 EP0595817 A1 EP 0595817A1 EP 92908565 A EP92908565 A EP 92908565A EP 92908565 A EP92908565 A EP 92908565A EP 0595817 A1 EP0595817 A1 EP 0595817A1
Authority
EP
European Patent Office
Prior art keywords
holders
test
support
carrier
patient
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP92908565A
Other languages
German (de)
English (en)
Inventor
Rudolf Baumann
Franz Nickel
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from DE19914113536 external-priority patent/DE4113536A1/de
Priority claimed from DE19914117754 external-priority patent/DE4117754A1/de
Application filed by Individual filed Critical Individual
Publication of EP0595817A1 publication Critical patent/EP0595817A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • 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
    • A61B3/04—Trial frames; Sets of lenses for use therewith
    • 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

Definitions

  • the present invention relates to a device for binocular refraction determination according to the preamble of independent claim 1.
  • CH-A-645 010 describes such a device in which the refraction glasses can be inclined towards one another in corresponding holders in order to determine the near-point refraction.
  • the holders can be adjusted to the pupil distance by means of axial adjustment handles on an elongated support.
  • the disadvantage of this device is the mechanically complex structure, so that the patient has to be presented with a relatively large housing,
  • FIG. 1 is a perspective view of a device according to the invention
  • FIG. 2 is a perspective view of a holding element for a holder for holding the refraction glasses on a larger scale
  • FIG. 3 is a perspective view of an angular gear for the adjustment of the holder and the nasal support
  • FIG. 4 shows an eye test device with a projector for use in an inventive device according to FIG. 1, and
  • FIG. 5 shows an eye test device with polarized test characters for use in the device according to FIG. 1.
  • the carrier 10 consists of a rigid threaded rod, on which holding elements 11, 12, 13 for a refractive glass holder 20, 21 for each eye of a patient and for a nasal support 22 are applied.
  • the holding elements 11, 12, 13 are designed as angular gears according to FIG. 3.
  • a crown gear 31 is provided with an internal thread and moves the holding element 30 axially on the carrier 10 when rotating.
  • a pin 33 mounted in a guide 32 fastened to the holding element 30 carries a further gear wheel 34 which meshes with the crown gear 31. At its free end, the pin 33 carries a grip part 35. With such a holding element, the refraction glass holders 20.21 can be adjusted to the pupil distance of the patient.
  • the refraction glass holders 20, 21 are rigidly attached to a holding element 11, 13.
  • these consist of a fixed ring 23, which can be provided with a scale in order to determine the axes of cylindrical sections or the like.
  • a second ring 24 carries refraction glass carrier 25 and this second ring 24 can be rotated by a handle part 26 by means of a gear.
  • the nasal support 22 is fastened to a holding element 12, which can have the same structure as the holding element 30 shown in FIG. 3.
  • the rod 27 to which the nasal support 22 is fastened can be designed as a threaded rod, and this can be done by means of of a further holding element 28, which is rigidly attached to holding element 12, can be adjusted in height or in length.
  • brackets 14 which are articulated on the outside of the carrier 10, are pivotably supported up and down by means of a further gear 15 in order to adapt them to the different positions of the ears and eyes.
  • handle parts 16 For this purpose, handle parts 16.
  • all grip parts 16, 26, 35, ie without grip part 29 for the height adjustability of the nasal support 22 are arranged in a common plane, so that the optician only for the adjustment of the height of the nasal support 22 from the front against the head of the Patient must grip. All other settings can be operated from the side or from above, so that the patient never has to feel that his eyes are at risk.
  • the holding elements 11, 12, 13 can each be fixed by means of lock nuts 17.
  • an analyzer is provided in the beam path between the test symbol and the test subject's two eyes, the direction of polarization in each beam path being changeable by an electrically controllable unit.
  • At least one LCD unit can be provided as an electrically controllable unit, with which the polarization direction in each beam path is independent of the other beam. lengang is changeable. This does not necessarily mean that the polarization direction in the two beam paths must always be crossed by 90 °, rather, in certain cases, a simultaneous change can also take place.
  • LCD units for example, allows the visual impressions of the left and right eyes to be exchanged. Such a change can be carried out within a few milliseconds, so that the test person can find practically no interruption in the visual impression.
  • the LCD unit can be provided in or immediately in front of the projector.
  • This form of training has the advantage that the entire luminous flux is recorded and that irregularities in the LCD unit are averaged out. It is also possible to arrange the LCD unit in front of the test characters or in front of a projection surface onto which a projector projects the test characters.
  • FIG. 4 shows an eye test device with a projector 41, which is set up for projecting linearly polarized test characters onto a projection surface 42. Furthermore, the observation beam path is shown, in which the test subject's two eyes are denoted by 44 and test glasses or a phoropter by 43.
  • the electrically controllable unit 45 with which the direction of polarization can be changed in each beam path and which can preferably be an LCD unit, can, as already mentioned, be provided in or immediately in front of the projector 41.
  • the electrically controllable unit 45 shown in dashed lines
  • test characters are not projected, but are provided as linearly polarized test characters on a board 42.
  • the electrically controllable unit 45 can be arranged in front of the test characters or in the area of the test glasses, or combined with the test glasses.
  • an eye test device in which an LCD unit is arranged in each beam path, which can change the linear polarization direction in the two beam paths independently of one another or simultaneously.

Landscapes

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

Abstract

Les montures (20, 21) des verres de réfraction et le pont (22) sur le nez sont retenus chacun par des éléments de retenue (11, 12, 13) sur une tige filetée qui sert de support (10). Ces éléments de retenue sont pourvus d'engrenages coniques et peuvent être axialement déplacés sur le support (10) au moyen d'une poignée (35). Tous les boutons (16, 26, 35) sont agencés sur un plan commun, de sorte que l'opticien n'a pas besoin de les saisir, afin d'effectuer les réglages devant les yeux du patient examiné, mais peut effectuer tous les ajustements nécessaires à l'extérieur du champ de vision du patient. Afin d'effectuer l'examen de la vue, une unité d'affichage à cristaux liquides est placée dans la trajectoire des rayons entre une surface de projection (42) de signes polarisés et les yeux du patient examiné. Cette unité permet de modifier les images dans les deux trajectoires de rayons indépendamment ou simultanément. L'utilisation d'unités d'affichage à cristaux liquides comme élément de commande permet une commutation très rapide, que le patient examiné ne peut guère percevoir et qui n'influence donc pas l'évaluation.
EP92908565A 1991-04-25 1992-04-23 Dispositif binoculaire de determination de la refraction Withdrawn EP0595817A1 (fr)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
DE19914113536 DE4113536A1 (de) 1991-04-25 1991-04-25 Binokulare sehtest-vorrichtung mit polarisierten testzeichen
DE4113536 1991-04-25
DE19914117754 DE4117754A1 (de) 1991-05-31 1991-05-31 Vorrichtung zur binokularen refraktionsbestimmung
DE4117754 1991-05-31
PCT/CH1992/000079 WO1992019149A1 (fr) 1991-04-25 1992-04-23 Dispositif binoculaire de determination de la refraction

Publications (1)

Publication Number Publication Date
EP0595817A1 true EP0595817A1 (fr) 1994-05-11

Family

ID=25903143

Family Applications (1)

Application Number Title Priority Date Filing Date
EP92908565A Withdrawn EP0595817A1 (fr) 1991-04-25 1992-04-23 Dispositif binoculaire de determination de la refraction

Country Status (3)

Country Link
EP (1) EP0595817A1 (fr)
JP (1) JPH06501186A (fr)
WO (1) WO1992019149A1 (fr)

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1290617B1 (it) * 1997-05-09 1998-12-10 Leonardo Palmeri Visore per montature
JP4783546B2 (ja) * 2000-03-30 2011-09-28 株式会社トプコン メガネフレーム及びこれを用いた検眼システム
JP4676476B2 (ja) * 2007-11-02 2011-04-27 愛眼株式会社 検眼枠
JP2012173716A (ja) * 2011-02-24 2012-09-10 Hosiden Corp メガネ
DE102012217841A1 (de) 2012-09-28 2014-04-03 Carl Zeiss Ag Vorrichtung und Verfahren zur Demonstration des Seheindrucks für einen Träger einer Brille mit polarisierenden Brillengläsern
FR3014674B1 (fr) * 2013-12-17 2016-02-05 Essilor Int Dispositif et procede de mesure de la refraction subjective
FR3040617B1 (fr) * 2015-09-03 2017-10-13 Essilor Int Equipement d'optometrie, ensemble et systeme comprenant un tel equipement
JP6634260B2 (ja) * 2015-10-06 2020-01-22 株式会社ハセガワ・ビコー 軽量検眼フレーム
DE102015225016A1 (de) * 2015-12-11 2017-06-14 Oculus Optikgeräte GmbH Messbrille
DE202015106765U1 (de) * 2015-12-11 2016-02-19 Oculus Optikgeräte GmbH Messbrille
DE102015225017A1 (de) * 2015-12-11 2017-06-14 Oculus Optikgeräte GmbH Messbrille
JP7132078B2 (ja) * 2018-10-15 2022-09-06 株式会社ハセガワ・ビコー 検眼フレーム
CN110441922B (zh) * 2019-08-16 2020-11-17 中国人民解放军陆军军医大学第二附属医院 视力测试用多功能眼镜
WO2022210772A1 (fr) * 2021-04-02 2022-10-06 ＶｉＸｉｏｎ株式会社 Lunettes, monture optique et mécanisme de réglage de position

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2432676A (en) * 1943-09-22 1947-12-16 American Optical Corp Corneal aligning means for trial frames
US2676588A (en) * 1950-04-25 1954-04-27 Shamsky Burton Orthoptic training device
DE3236009C2 (de) * 1982-09-29 1984-08-02 Klaus 7742 St Georgen Uebber An der Brillenfassung festspannbares Brillenanpaßgerät
US4726673A (en) * 1986-05-05 1988-02-23 University Of Southern California Tachistoscope for presenting stimuli in lateralized form

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO9219149A1 *

Also Published As

Publication number Publication date
JPH06501186A (ja) 1994-02-10
WO1992019149A1 (fr) 1992-11-12

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