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Measurements of the parapapillary atrophy zones in en face optical coherence tomography images.

Abstract To measure the parapapillary atrophy (PPA) area in en face images obtained with swept-source optical coherence tomography (SS-OCT), and to evaluate its relationship to glaucoma, myopia, and age in non-highly myopic subjects.
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Publication Year Start




PMID- 28414805
OWN - NLM
STAT- MEDLINE
DA  - 20170417
DCOM- 20170425
LR  - 20170425
IS  - 1932-6203 (Electronic)
IS  - 1932-6203 (Linking)
VI  - 12
IP  - 4
DP  - 2017
TI  - Measurements of the parapapillary atrophy zones in en face optical coherence
      tomography images.
PG  - e0175347
LID - 10.1371/journal.pone.0175347 [doi]
AB  - OBJECTIVE: To measure the parapapillary atrophy (PPA) area in en face images
      obtained with swept-source optical coherence tomography (SS-OCT), and to evaluate
      its relationship to glaucoma, myopia, and age in non-highly myopic subjects.
      DESIGN: Retrospective, cross-sectional study. PARTICIPANTS: Fifty eyes of 30
      subjects with open-angle glaucoma (G group) and forty-three eyes of 26 healthy
      control subjects (C group). Eyes with high myopia (spherical equivalent
      refractive error </= -8 diopters or axial length >/= 26.5 mm) were excluded.
      METHODS: Mean age +/- standard deviation was 59.9 +/- 12.4 years. The beta zone
      and the gamma zone PPA areas were measured in en face images reconstructed from
      three-dimensional SS-OCT images. Relationship between the PPA areas and patient
      characteristics such as glaucoma, axial length, and age was statistically
      evaluated using multivariate mixed-effects models. MAIN OUTCOME MEASURES: Areas
      of the beta zone and the gamma zone PPA measured on en face OCT images. RESULTS: 
      Average +/- standard deviation area of the beta and the gamma zone was 0.64 +/-
      0.79 and 0.16 +/- 0.30 mm2, respectively. In multivariate models, the gamma zone 
      significantly correlated with axial length (P = 0.001) but not with glaucoma (P =
      0.944). In contrast, the beta zone significantly correlated with age (P = 0.0249)
      and glaucoma (P = 0.014). CONCLUSIONS: En face images reconstructed from 3D
      SS-OCT data facilitated measurements of the beta and the gamma PPA zones even in 
      eyes with optic disc distortion. The OCT-defined beta zone is associated with
      glaucoma and age, whereas the gamma zone correlated with myopia but not with
      glaucoma. This study confirmed the clinical usefulness of OCT-based
      classification of the PPA zones in distinguishing glaucomatous damage of the
      optic nerve from myopic damage in non-highly myopic eyes.
FAU - Miki, Atsuya
AU  - Miki A
AUID- ORCID: http://orcid.org/0000-0002-5618-7287
AD  - Department of Ophthalmology, Osaka University Graduate School of Medicine, Osaka,
      Japan.
FAU - Ikuno, Yasushi
AU  - Ikuno Y
AD  - Department of Ophthalmology, Osaka University Graduate School of Medicine, Osaka,
      Japan.
FAU - Weinreb, Robert N
AU  - Weinreb RN
AD  - Hamilton Glaucoma Center, Department of Ophthalmology and Shiley Eye Insititute, 
      University of California, San Diego, La Jolla, California, United States of
      America.
FAU - Yokoyama, Junko
AU  - Yokoyama J
AD  - Department of Ophthalmology, Osaka University Graduate School of Medicine, Osaka,
      Japan.
AD  - Department of Ophthalmology, National Hospital Organization Osaka National
      Hospital, Osaka, Japan.
FAU - Asai, Tomoko
AU  - Asai T
AD  - Department of Ophthalmology, Osaka University Graduate School of Medicine, Osaka,
      Japan.
FAU - Usui, Shinichi
AU  - Usui S
AD  - Department of Ophthalmology, Osaka University Graduate School of Medicine, Osaka,
      Japan.
FAU - Nishida, Kohji
AU  - Nishida K
AD  - Department of Ophthalmology, Osaka University Graduate School of Medicine, Osaka,
      Japan.
LA  - eng
PT  - Journal Article
DEP - 20170417
PL  - United States
TA  - PLoS One
JT  - PloS one
JID - 101285081
SB  - IM
MH  - Case-Control Studies
MH  - Cross-Sectional Studies
MH  - Female
MH  - Glaucoma/pathology
MH  - Glaucoma, Open-Angle/pathology
MH  - Humans
MH  - Intraocular Pressure/physiology
MH  - Male
MH  - Middle Aged
MH  - Myopia/pathology
MH  - Optic Atrophy/*pathology
MH  - Optic Disk/pathology
MH  - Retrospective Studies
MH  - Tomography, Optical Coherence
EDAT- 2017/04/18 06:00
MHDA- 2017/04/26 06:00
CRDT- 2017/04/18 06:00
PHST- 2017/01/19 [received]
PHST- 2017/03/24 [accepted]
AID - 10.1371/journal.pone.0175347 [doi]
AID - PONE-D-17-02619 [pii]
PST - epublish
SO  - PLoS One. 2017 Apr 17;12(4):e0175347. doi: 10.1371/journal.pone.0175347.
      eCollection 2017.

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