WO2001067945B1 - Methods for measuring iris color over time - Google Patents

Methods for measuring iris color over time

Info

Publication number
WO2001067945B1
WO2001067945B1 PCT/US2001/007902 US0107902W WO0167945B1 WO 2001067945 B1 WO2001067945 B1 WO 2001067945B1 US 0107902 W US0107902 W US 0107902W WO 0167945 B1 WO0167945 B1 WO 0167945B1
Authority
WO
WIPO (PCT)
Prior art keywords
color
iris
iris color
images
selected time
Prior art date
Application number
PCT/US2001/007902
Other languages
French (fr)
Other versions
WO2001067945A1 (en
Inventor
Bernard Schwartz
Takenori Takamoto
Original Assignee
Bernard Schwartz
Takenori Takamoto
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 US09/804,172 external-priority patent/US6829374B2/en
Application filed by Bernard Schwartz, Takenori Takamoto filed Critical Bernard Schwartz
Priority to AU2001250829A priority Critical patent/AU2001250829A1/en
Publication of WO2001067945A1 publication Critical patent/WO2001067945A1/en
Publication of WO2001067945B1 publication Critical patent/WO2001067945B1/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
    • A61B3/14—Arrangements specially adapted for eye photography
    • 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
    • A61B3/12—Objective types, i.e. instruments for examining the eyes independent of the patients' perceptions or reactions for looking at the eye fundus, e.g. ophthalmoscopes
    • A61B3/1216—Objective types, i.e. instruments for examining the eyes independent of the patients' perceptions or reactions for looking at the eye fundus, e.g. ophthalmoscopes for diagnostics of the iris

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)
  • Measurement Of The Respiration, Hearing Ability, Form, And Blood Characteristics Of Living Organisms (AREA)
  • Image Processing (AREA)

Abstract

A system is described for obtaining standardized photographs of the iris with exposure dependent on iris color. Analysis of iris color of these photographs uses image analysis digitized in the red-green-blue spectrum for determining changes of iris color over time in patients with disease and on drug therapy. A region of interest of the iris is selected to minimize artifacts such as corneal reflection. White light (Red-Green-Blue) spectrum or color ratios such as red/blue are used to measure density and areas of color over at selected time intervals. The image analysis digitized in the red-green-blue spectrum for measuring color of iris photographs show no significant change in iris color in normals, but did show significant changes in iris color in glaucomatous eyes treated with precription eye drops.

Claims

36AMENDED CLAIMS[received by the International Bureau on 27 September 2001 (27.09.01); original claims 1 and 3 amended; remaining claims unchanged (1 page)]
1. A method for measuring changes in iris color over a selected time interval, said method comprising the steps of: a) obtaining images of iris color of an eye at selected time intervals; b) selecting a common region of interest of the iris color of said images for minimizing artifacts; c) analyzing the iris color of said images using color ratios; and d) measuring and comparing density and areas of color ofthe selected common regions of interest for the iris color of said images for determining changes in iris color for the selected time interval.
2. The method as claimed in claim 1 wherein the step of obtaining images of iris color includes the step of obtaining photographic images of iris color.
3. The method as claimed in claim 1 wherein the step of measuring and comparing density and areas of color ofthe selected region of interest for determining changes in iris color for the selected time interval is by using color ratios.
4. The method as claimed in claim 1 wherein the step of analyzing the iris color of said images is by using image analysis digitized in the red-green-blue spectrum and the step of measuring and comparing density and areas of color ofthe selected region of interest for determining changes in iris color for the selected time interval is by using image analysis digitized in the red-green-blue spectrum.
5. A method for measuring changes in iris color over a selected time interval, said method comprising the steps of: a) obtaining photographs of iris color of an eye at selected time intervals; b) selecting a common region of interest of said photographs for minimizing artifacts; c) analyzing the iris color of said photographs using color ratios; and
STATEMENT UNDER ARTICLE 19
Claims 1 and 3 are amended, the remaining claims are unchanged.
Claim 1 is amended by adding the words "using color ratios" after the word "images" in
line 6.
Claim 3 is amended by deleting the words "the step of analyzing the iris color of said
images is by using color ratios and" in lines 1 and 2.
The amendment to claims 1 and 3 does not have any impact on either the description or
the drawings.
PCT/US2001/007902 2000-03-14 2001-03-13 Methods for measuring iris color over time WO2001067945A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU2001250829A AU2001250829A1 (en) 2000-03-14 2001-03-13 Methods for measuring iris color over time

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US18915000P 2000-03-14 2000-03-14
US60/189,150 2000-03-14
US09/804,172 2001-03-12
US09/804,172 US6829374B2 (en) 2001-03-12 2001-03-12 Methods for measuring iris color over time

Publications (2)

Publication Number Publication Date
WO2001067945A1 WO2001067945A1 (en) 2001-09-20
WO2001067945B1 true WO2001067945B1 (en) 2002-01-03

Family

ID=26884839

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2001/007902 WO2001067945A1 (en) 2000-03-14 2001-03-13 Methods for measuring iris color over time

Country Status (1)

Country Link
WO (1) WO2001067945A1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ITUA20163001A1 (en) * 2016-04-29 2017-10-29 Nidek Tech Srl METHOD TO CREATE AND PROCESS A COLOR IMAGE OF AN IRIDOCORNEAL REGION OF AN EYE AND APPARATUS THAT USES IT

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6233395B1 (en) * 1996-09-20 2001-05-15 Covance Laboratories Gmbh Method for quantitative iris colorimetry

Also Published As

Publication number Publication date
WO2001067945A1 (en) 2001-09-20

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