NDLI: Three-Dimensional Morphometric Analysis of the Iris by Swept-Source Anterior Segment Optical Coherence Tomography in a Caucasian Population.

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Three-Dimensional Morphometric Analysis of the Iris by Swept-Source Anterior Segment Optical Coherence Tomography in a Caucasian Population.

Content Provider	World Health Organization (WHO)-Global Index Medicus
Author	Viola, Francesco Staurenghi, Giovanni Giardini, Piero Invernizzi, Alessandro Cigada, Mario
Description	Author Affiliation: Invernizzi A ( Eye Clinic Department of Biomedical and Clinical Science, Luigi Sacco Hospital, University of Milan, Milan, Italy 2Department of Clinical Sciences and Community Health, University of Milan, Ophthalmological Unit, IRCCS-Cà Granda Foundation-Ospedale Maggio.); Giardini P ( Eye Clinic Department of Biomedical and Clinical Science, Luigi Sacco Hospital, University of Milan, Milan, Italy.); Cigada M ( Eye Clinic Department of Biomedical and Clinical Science, Luigi Sacco Hospital, University of Milan, Milan, Italy.); Viola F ( Department of Clinical Sciences and Community Health, University of Milan, Ophthalmological Unit, IRCCS-Cà Granda Foundation-Ospedale Maggiore Policlinico, Milan, Italy.); Staurenghi G ( Eye Clinic Department of Biomedical and Clinical Science, Luigi Sacco Hospital, University of Milan, Milan, Italy.)
Abstract	PURPOSE: We analyzed by swept-source anterior segment optical coherence tomography (SS-ASOCT) the three-dimensional iris morphology in a Caucasian population, and correlated the findings with iris color, iris sectors, subject age, and sex. METHODS: One eye each from consecutive healthy emmetropic (refractive spherical equivalent ± 3 diopters) volunteers were selected for the study. The enrolled eye underwent standardized anterior segment photography to assess iris color. Iris images were assessed by SS-ASOCT for volume, thickness, width, and pupil size. Sectoral variations of morphometric data among the superior, nasal, inferior, and temporal sectors were recorded. RESULTS: A total of 135 eyes from 57 males and 78 females, age 49 ± 17 years, fulfilled the inclusion criteria. All iris morphometric parameters varied significantly among the different sectors (all P < 0.0001). Iris total volume and thickness were significantly correlated with increasingly darker pigmentation (P < 0.0001, P = 0.0384, respectively). Neither width nor pupil diameter was influenced by iris color. Age did not affect iris volume or thickness; iris width increased and pupil diameter decreased with age (rs = 0.52, rs = -0.58, respectively). There was no effect of sex on iris volume, thickness, or pupil diameter; iris width was significantly greater in males (P = 0.007). CONCLUSIONS: Morphology of the iris varied by iris sector, and iris color was associated with differences in iris volume and thickness. Morphological parameter variations associated with iris color, sector, age, and sex can be used to identify pathological changes in suspect eyes. To be effective in clinical settings, construction of iris morphological databases for different ethnic and racial populations is essential.
ISSN	01460404
e-ISSN	15525783
Journal	Investigative Opthalmology & Visual Science
Issue Number	8
Volume Number	56
Language	English
Publisher	Association for Research in Vision and Ophthalmology
Publisher Date	2015-07-01
Publisher Place	United States
Access Restriction	Open
Subject Keyword	European Continental Ancestry Group Imaging, Three-dimensional Anatomy & Histology Tomography, Optical Coherence Anterior Eye Segment Healthy Volunteers Discipline Ophthalmology
Content Type	Text
Resource Type	Article
Subject	Ophthalmology Sensory Systems Cellular and Molecular Neuroscience

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