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Macular ganglion cell-inner plexiform layer loss precedes peripapillary retinal nerve fiber layer loss in glaucoma with lower intraocular pressure

Marshall, HN, Andrew, NH, Hassall, M, Qassim, A, Souzeau, E, Ridge, B, Nguyen, T, Fitzgerald, J, Awadalla, MS, Burdon, KP ORCID: 0000-0001-8217-1249, Healey, PR, Agar, A, Galanopoulos, A, Hewitt, AW ORCID: 0000-0002-5123-5999, Graham, SL, Landers, J, Casson, RJ and Craig, JE 2019 , 'Macular ganglion cell-inner plexiform layer loss precedes peripapillary retinal nerve fiber layer loss in glaucoma with lower intraocular pressure' , Ophthalmology , pp. 1-12 , doi: 10.1016/j.ophtha.2019.03.016.

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Purpose: To investigate which clinical measures influence whether an individual demonstrates earliest glaucomatous structural progression on peripapillary retinal nerve fiber layer (pRNFL) or macular ganglion cell-inner plexiform layer (mGCIPL).Design: Prospective, longitudinal cohort study.Participants: Two hundred seventy-one eyes from 207 individuals with statistically significant evidence of glaucomatous progression on OCT Guided Progression Analysis (GPA) software were drawn from a total of 1271 eyes from 686 individuals categorized as glaucoma suspect or having early manifest glaucoma undergoing glaucoma surveillance.Methods: Individuals demonstrating earliest evidence of longitudinal progression on mGCIPL GPA event analysis were compared with individuals demonstrating evidence of earliest longitudinal progression on pRNFL GPA event analysis.Main Outcome Measures: Correlation of OCT event change analysis with intraocular pressure (IOP), clinical variables, and baseline thickness of the pRNFL and mGCIPL.Results: Intraocular pressure, baseline pRNFL thickness, baseline mGCIPL thickness, and systemic hypertension were associated with location of first progression. Eyes demonstrating earliest longitudinal progression on mGCIPL had significantly lower maximum-recorded pretreatment IOP (mean difference, 3.90 mmHg; 95% confidence interval [CI], 2.37-5.43 mmHg; P P P = 0.01).Conclusions: Clinical features, particularly pretreatment IOP, influence whether structural glaucoma progression is detected earlier with mGCIPL or pRNFL imaging. These data support the usefulness of mGCIPL imaging in addition to pRNFL analysis for detection of glaucoma progression, particularly in patients with normal IOP.

Item Type: Article
Authors/Creators:Marshall, HN and Andrew, NH and Hassall, M and Qassim, A and Souzeau, E and Ridge, B and Nguyen, T and Fitzgerald, J and Awadalla, MS and Burdon, KP and Healey, PR and Agar, A and Galanopoulos, A and Hewitt, AW and Graham, SL and Landers, J and Casson, RJ and Craig, JE
Journal or Publication Title: Ophthalmology
Publisher: Elsevier Science Inc
ISSN: 0161-6420
DOI / ID Number: 10.1016/j.ophtha.2019.03.016
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Copyright 2019 American Academy of Ophthalmology

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