IT1258488B - Apparecchio per l'analisi topografica di superfici anatomiche, in particolare della cornea - Google Patents

Apparecchio per l'analisi topografica di superfici anatomiche, in particolare della cornea

Info

Publication number
IT1258488B
IT1258488B ITRM920688A ITRM920688A IT1258488B IT 1258488 B IT1258488 B IT 1258488B IT RM920688 A ITRM920688 A IT RM920688A IT RM920688 A ITRM920688 A IT RM920688A IT 1258488 B IT1258488 B IT 1258488B
Authority
IT
Italy
Prior art keywords
cornea
cone
eye
reconstruct
emitter
Prior art date
Application number
ITRM920688A
Other languages
English (en)
Inventor
Renzo Mattioli
Original Assignee
Renzo Mattioli
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
Application filed by Renzo Mattioli filed Critical Renzo Mattioli
Priority to ITRM920688A priority Critical patent/IT1258488B/it
Publication of ITRM920688A0 publication Critical patent/ITRM920688A0/it
Priority to ES93830386T priority patent/ES2104114T3/es
Priority to US08/124,102 priority patent/US5526073A/en
Priority to EP93830386A priority patent/EP0589857B1/en
Priority to DE69310303T priority patent/DE69310303T2/de
Publication of ITRM920688A1 publication Critical patent/ITRM920688A1/it
Application granted granted Critical
Publication of IT1258488B publication Critical patent/IT1258488B/it
Priority to HK98105064.3A priority patent/HK1005845B/en

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
    • A61B3/10—Objective types, i.e. instruments for examining the eyes independent of the patients' perceptions or reactions
    • A61B3/107—Objective types, i.e. instruments for examining the eyes independent of the patients' perceptions or reactions for determining the shape or measuring the curvature of the cornea
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/103—Measuring devices for testing the shape, pattern, colour, size or movement of the body or parts thereof, for diagnostic purposes
    • A61B5/11—Measuring movement of the entire body or parts thereof, e.g. head or hand tremor or mobility of a limb
    • A61B5/1103—Detecting muscular movement of the eye, e.g. eyelid movement
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B2562/00—Details of sensors; Constructional details of sensor housings or probes; Accessories for sensors
    • A61B2562/02—Details of sensors specially adapted for in-vivo measurements
    • A61B2562/0233—Special features of optical sensors or probes classified in A61B5/00
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/68—Arrangements of detecting, measuring or recording means, e.g. sensors, in relation to patient
    • A61B5/6801—Arrangements of detecting, measuring or recording means, e.g. sensors, in relation to patient specially adapted to be attached to or worn on the body surface
    • A61B5/6813—Specially adapted to be attached to a specific body part
    • A61B5/6814—Head
    • A61B5/6821—Eye

Landscapes

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

Abstract

Oggetto dell'invenzione è un apparecchio che permette di ricostruire la forma tridimensionale di una superficie anatomica parzialmente riflettente specificamente la cornea di un occhio umano. L'apparecchio che è basato sull'uso di un computer e di una telecamera, comprende un corpo di materiale trasparente (11) (es. perspex) nel quale è stato praticato un foro conico. Sulla superficie conica del foro sono tracciate delle mire circolari tronco-coniche, alternativamente opache e trasparenti, retro illuminate.Inoltre comprende una coppia fotoelettrica (17, 18) (ad es. emettitore: IRED o LED, e sensore: FOTODIODO o FOTOTRANSISTOR) disposta su punti opposti della base esterna del cono, in modo che avvicinando il cono all'occhio da esaminare, l'apice dell'occhio intercetti la congiungente il sensore e l'emettitore ad una distanza prefissata dal cono stesso. I riflessi delle mire sulla cornea, rilevati dalla telecamera posta verso il vertice del cono ed opportunamente elaborati dal computer, consentono di ricostruire la forma della cornea stessa e la sua curvatura in tutti i punti entro un'area relativamente ampia. (Figura 1).
ITRM920688A 1992-09-23 1992-09-23 Apparecchio per l'analisi topografica di superfici anatomiche, in particolare della cornea IT1258488B (it)

Priority Applications (6)

Application Number Priority Date Filing Date Title
ITRM920688A IT1258488B (it) 1992-09-23 1992-09-23 Apparecchio per l'analisi topografica di superfici anatomiche, in particolare della cornea
ES93830386T ES2104114T3 (es) 1992-09-23 1993-09-20 Aparato destinado para el analisis topografico de superficies anatomicas, en particular de la cornea.
US08/124,102 US5526073A (en) 1992-09-23 1993-09-20 Apparatus for topographical analysis of cornea
EP93830386A EP0589857B1 (en) 1992-09-23 1993-09-20 An apparatus for topographical analysis of anatomical surfaces, in particular of cornea
DE69310303T DE69310303T2 (de) 1992-09-23 1993-09-20 Gerät zur topografischen Bestimmung anatomischer Oberflächen, insbesondere der Kornea
HK98105064.3A HK1005845B (en) 1992-09-23 1998-06-09 An apparatus for topographical analysis of anatomical surfaces, in particular of cornea

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
ITRM920688A IT1258488B (it) 1992-09-23 1992-09-23 Apparecchio per l'analisi topografica di superfici anatomiche, in particolare della cornea

Publications (3)

Publication Number Publication Date
ITRM920688A0 ITRM920688A0 (it) 1992-09-23
ITRM920688A1 ITRM920688A1 (it) 1994-03-23
IT1258488B true IT1258488B (it) 1996-02-26

Family

ID=11401199

Family Applications (1)

Application Number Title Priority Date Filing Date
ITRM920688A IT1258488B (it) 1992-09-23 1992-09-23 Apparecchio per l'analisi topografica di superfici anatomiche, in particolare della cornea

Country Status (5)

Country Link
US (1) US5526073A (it)
EP (1) EP0589857B1 (it)
DE (1) DE69310303T2 (it)
ES (1) ES2104114T3 (it)
IT (1) IT1258488B (it)

Families Citing this family (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH089222A (ja) * 1994-06-17 1996-01-12 Canon Inc 視線検出機能付き撮像装置
WO1996013199A2 (en) * 1994-10-28 1996-05-09 Eyesys Technologies, Inc. Multi-camera corneal analysis system
DE19538567A1 (de) * 1995-10-17 1997-04-24 Oculus Optikgeraete Gmbh Vorrichtung für die topographische Vermessung einer Oberfläche
US5735283A (en) * 1996-10-09 1998-04-07 Snook; Richard Kieth Surgical keratometer system for measuring surface topography of a cornea during surgery
US5740803A (en) * 1997-03-07 1998-04-21 Autonomous Technologies Corporation Locating the center of the entrance pupil of an eye after pupil dilation
US6302876B1 (en) 1997-05-27 2001-10-16 Visx Corporation Systems and methods for imaging corneal profiles
US6152565A (en) * 1997-12-31 2000-11-28 Premier Laser Systems, Inc. Handheld corneal topography system
DE19852331A1 (de) * 1998-11-13 2000-05-18 Benedikt Jean Verfahren und Vorrichtung zur simultanen Bestimmung von Oberflächentopometrie und Biometrie des Auges mit Hilfe der modifizierten Placidoring-Videotopographie und der optischen Kohärenz-Tomographie
US7246905B2 (en) * 1998-11-13 2007-07-24 Jean Benedikt Method and an apparatus for the simultaneous determination of surface topometry and biometry of the eye
EP1128761B1 (en) 1998-11-13 2003-04-09 Jean, Benedikt Prof.Dr.med. A method and an apparatus for the simultaneous determination of surface topometry and biometry of the eye
DE19926274A1 (de) * 1999-06-09 2001-01-04 Benedikt Jean Verfahren und Vorrichtung zur simultanen Bestimmung von Oberflächentopometrie und der Einfluß der weiteren brechenden Medien des Auges mit Hilfe der modifizierten Placidoring-Videotopographie und einer Strahlprofilanalyse
WO2000059402A2 (en) 1999-04-07 2000-10-12 Visx, Inc. Improved interface for laser eye surgery
ITRM20070183A1 (it) 2007-04-03 2008-10-04 Optikon 2000 Spa Apparato oftalmologico multifunzione.
US8184301B2 (en) * 2009-08-19 2012-05-22 Benz Research And Development Corporation Surface alignment and positioning method and apparatus
EP2583620B1 (de) * 2013-01-24 2017-08-23 Haag-Streit Ag Topograph
US9839352B2 (en) 2015-08-15 2017-12-12 Smart EyeDeas I, LLC System, method and apparatus for enabling corneal topography mapping by smartphone
WO2019234218A1 (en) * 2018-06-08 2019-12-12 Roberto Gustavo Albertazzi Plácido's discs cone-projector
US11197604B2 (en) 2018-10-05 2021-12-14 Mark Schneider Mobile phone cornea Placido disc image
WO2020181267A1 (en) * 2019-03-06 2020-09-10 Texas Tech University System Diagnostic tool for eye disease detection
EP3991634A1 (en) 2020-10-29 2022-05-04 Carl Zeiss Vision International GmbH Method and device for determining a refractive error

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
LU75977A1 (it) * 1976-10-12 1978-05-16
US4569576A (en) * 1982-08-31 1986-02-11 Moskovsky Nauchno-Issledovatelsky Institut Glaznykh Boleznei Imeni Gelmgoltsa Method and device for determining cornea surface topography
WO1984004882A1 (fr) * 1983-06-06 1984-12-20 Matthias Weiss Dispositif pour produire des signaux electroniques
ATE86459T1 (de) * 1987-08-26 1993-03-15 Hage Sami G El Vorrichtung zur bestimmung der corneakontur eines menschlichen auges.
US5106183A (en) * 1987-11-25 1992-04-21 Taunton Technologies, Inc. Topography measuring apparatus
WO1991013583A1 (en) * 1990-03-13 1991-09-19 Computed Anatomy Incorporated Compact keratoscope with interchangeable cones
US5088203A (en) * 1991-06-17 1992-02-18 Neiswander Leonard E Method and apparatus for eye glasses position measurement system and/or for vertex measurement system

Also Published As

Publication number Publication date
ITRM920688A1 (it) 1994-03-23
HK1005845A1 (en) 1999-01-29
US5526073A (en) 1996-06-11
ITRM920688A0 (it) 1992-09-23
EP0589857B1 (en) 1997-05-02
EP0589857A1 (en) 1994-03-30
DE69310303T2 (de) 1997-11-06
DE69310303D1 (de) 1997-06-05
ES2104114T3 (es) 1997-10-01

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Legal Events

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0001 Granted
TA Fee payment date (situation as of event date), data collected since 19931001

Effective date: 19960925