| Measurement of iris color using computerized image analysis. | |
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MedLine Citation:
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PMID: 11584340 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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PURPOSE: To develop a standardized method for measuring from iris photographs, light and dark segments of areas and densities of iris color. METHODS: Computerized image analysis was used to measure the iris photographs. The reproducibility of this method was studied in 30 normal eyes with three different colored irides, green-brown, blue-grey brown and yellow-brown. Three photographs were taken of each iris with a slit lamp camera at three different exposures at baseline. The photographs were repeated with exposure providing for the best reproducibility at 6.5 +/- 1.7 months as a first follow-up after baseline and 3.6 +/- 0.8 months following the first follow-up visit. At least one measurement was made for each photograph. RESULTS: The mean percent coefficient of variation (standard deviation of triplicate measurements/mean x 100) ranged from 1.0 to 4.1% for area and density measurements. Furthermore, the range of mean percent differences between baseline and follow-up visits ranged from 1.2 to 6.3%. CONCLUSION: We have developed a standardized method which appears suitable for measuring changes over time in iris color. |
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Authors:
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T Takamoto; B Schwartz; L B Cantor; J S Hoop; T Steffens |
Publication Detail:
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Type: Journal Article; Research Support, Non-U.S. Gov't |
Journal Detail:
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Title: Current eye research Volume: 22 ISSN: 0271-3683 ISO Abbreviation: Curr. Eye Res. Publication Date: 2001 Jun |
Date Detail:
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Created Date: 2001-10-03 Completed Date: 2001-11-01 Revised Date: 2006-11-15 |
Medline Journal Info:
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Nlm Unique ID: 8104312 Medline TA: Curr Eye Res Country: England |
Other Details:
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Languages: eng Pagination: 412-9 Citation Subset: IM |
Affiliation:
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Glaucoma Research, Inc., Boston, MA 02116, USA. |
Export Citation:
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APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
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Aged Eye Color* Female Humans Image Processing, Computer-Assisted / methods* Iris / chemistry* Male Middle Aged Photography Pigments, Biological / analysis Reproducibility of Results |
| Chemical | |
Reg. No./Substance:
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0/Pigments, Biological |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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