Quantitative analysis of retinal nerve fiber layer defect in early open-angle glaucoma with normal intraocular pressure

Purpose To quantitatively analyze the topographic features of localized retinal nerve fiber layer (RNFL) defects according to baseline intraocular pressure (IOP) level in cases of early primary open-angle glaucoma (POAG). Study design Retrospective comparative study. Methods POAG patients meeting th...

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Veröffentlicht in:Japanese journal of ophthalmology 2020-05, Vol.64 (3), p.278-284
Hauptverfasser: Ha, Ahnul, Kim, Tai Jun, Lee, Won June, Kim, Dong Myung, Jeoung, Jin Wook, Kim, Young Kook, Park, Ki Ho
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container_issue 3
container_start_page 278
container_title Japanese journal of ophthalmology
container_volume 64
creator Ha, Ahnul
Kim, Tai Jun
Lee, Won June
Kim, Dong Myung
Jeoung, Jin Wook
Kim, Young Kook
Park, Ki Ho
description Purpose To quantitatively analyze the topographic features of localized retinal nerve fiber layer (RNFL) defects according to baseline intraocular pressure (IOP) level in cases of early primary open-angle glaucoma (POAG). Study design Retrospective comparative study. Methods POAG patients meeting the following conditions were consecutively included: (1) baseline office-hour diurnal IOP ≤ 21 mmHg, (2) 1 localized RNFL defect as observed on red-free fundus photography, and (3) corresponding visual field defect. Defects’ approximations to the macula (angle α) and width (angle ß) as well as the angle between the disc long axis and the vertical meridian line (angle Ɣ) were measured on red-free fundus photography. The corrected angle α was calculated as the difference between angles α and Ɣ. The defect area’s RNFL thickness was calculated by means of optical coherence tomography’s Advanced Extraction analysis utility. Results Comparative analysis was performed between 2 groups: 45 eyes of 45 patients with low-teen IOP (group A: highest IOP ≤ 15 mmHg) and 49 eyes of 49 patients with high-teen IOP (group B: lowest IOP > 15 mmHg). In group A, the mean baseline IOP was lower (12.9 ± 1.3 vs 17.1 ± 1.0 mmHg; P < .001), the corrected angle α was smaller (32.4 ± 15.1 vs 39.5 ± 13.1 degrees; P = .017), and the defect area’s RNFL thickness was thinner (66.3 ± 16.8 vs 76.3 ± 14.9 μm; P = .003) than in group B; angle ß showed no intergroup difference ( P = .230). Conclusions In POAG patients with low-teen IOP relative to those with high-teen IOP, localized RNFL defects were closer to the macula. In addition, the RNFL thickness of the defect area was markedly thinner.
doi_str_mv 10.1007/s10384-019-00704-4
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Study design Retrospective comparative study. Methods POAG patients meeting the following conditions were consecutively included: (1) baseline office-hour diurnal IOP ≤ 21 mmHg, (2) 1 localized RNFL defect as observed on red-free fundus photography, and (3) corresponding visual field defect. Defects’ approximations to the macula (angle α) and width (angle ß) as well as the angle between the disc long axis and the vertical meridian line (angle Ɣ) were measured on red-free fundus photography. The corrected angle α was calculated as the difference between angles α and Ɣ. The defect area’s RNFL thickness was calculated by means of optical coherence tomography’s Advanced Extraction analysis utility. Results Comparative analysis was performed between 2 groups: 45 eyes of 45 patients with low-teen IOP (group A: highest IOP ≤ 15 mmHg) and 49 eyes of 49 patients with high-teen IOP (group B: lowest IOP &gt; 15 mmHg). In group A, the mean baseline IOP was lower (12.9 ± 1.3 vs 17.1 ± 1.0 mmHg; P &lt; .001), the corrected angle α was smaller (32.4 ± 15.1 vs 39.5 ± 13.1 degrees; P = .017), and the defect area’s RNFL thickness was thinner (66.3 ± 16.8 vs 76.3 ± 14.9 μm; P = .003) than in group B; angle ß showed no intergroup difference ( P = .230). Conclusions In POAG patients with low-teen IOP relative to those with high-teen IOP, localized RNFL defects were closer to the macula. In addition, the RNFL thickness of the defect area was markedly thinner.</description><identifier>ISSN: 0021-5155</identifier><identifier>EISSN: 1613-2246</identifier><identifier>DOI: 10.1007/s10384-019-00704-4</identifier><identifier>PMID: 32062849</identifier><language>eng</language><publisher>Tokyo: Springer Japan</publisher><subject>Adult ; Clinical Investigation ; Comparative analysis ; Comparative studies ; Defects ; Diurnal ; Eye (anatomy) ; Female ; Glaucoma ; Glaucoma, Open-Angle - diagnostic imaging ; Glaucoma, Open-Angle - pathology ; Humans ; Intraocular pressure ; Intraocular Pressure - physiology ; Male ; Mathematical analysis ; Medicine ; Medicine &amp; Public Health ; Middle Aged ; Nerve Fibers - pathology ; Ophthalmology ; Optic Nerve Diseases - diagnostic imaging ; Optic Nerve Diseases - pathology ; Optical Coherence Tomography ; Photography ; Pressure ; Quantitative analysis ; Retina ; Retinal Ganglion Cells - pathology ; Retrospective Studies ; Thickness ; Tomography, Optical Coherence ; Tonometry, Ocular ; Vision Disorders - physiopathology ; Visual field ; Visual Field Tests ; Visual fields ; Visual Fields - physiology ; Visual observation</subject><ispartof>Japanese journal of ophthalmology, 2020-05, Vol.64 (3), p.278-284</ispartof><rights>Japanese Ophthalmological Society 2020</rights><rights>Japanese Ophthalmological Society 2020.</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c399t-8096649f9c42179f77c912840badfb6d9c53e20e1b25491b3d70c934aa09dcf73</citedby><cites>FETCH-LOGICAL-c399t-8096649f9c42179f77c912840badfb6d9c53e20e1b25491b3d70c934aa09dcf73</cites><orcidid>0000-0002-8137-8843</orcidid></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttps://link.springer.com/content/pdf/10.1007/s10384-019-00704-4$$EPDF$$P50$$Gspringer$$H</linktopdf><linktohtml>$$Uhttps://link.springer.com/10.1007/s10384-019-00704-4$$EHTML$$P50$$Gspringer$$H</linktohtml><link.rule.ids>314,780,784,27915,27916,41479,42548,51310</link.rule.ids><backlink>$$Uhttps://www.ncbi.nlm.nih.gov/pubmed/32062849$$D View this record in MEDLINE/PubMed$$Hfree_for_read</backlink></links><search><creatorcontrib>Ha, Ahnul</creatorcontrib><creatorcontrib>Kim, Tai Jun</creatorcontrib><creatorcontrib>Lee, Won June</creatorcontrib><creatorcontrib>Kim, Dong Myung</creatorcontrib><creatorcontrib>Jeoung, Jin Wook</creatorcontrib><creatorcontrib>Kim, Young Kook</creatorcontrib><creatorcontrib>Park, Ki Ho</creatorcontrib><title>Quantitative analysis of retinal nerve fiber layer defect in early open-angle glaucoma with normal intraocular pressure</title><title>Japanese journal of ophthalmology</title><addtitle>Jpn J Ophthalmol</addtitle><addtitle>Jpn J Ophthalmol</addtitle><description>Purpose To quantitatively analyze the topographic features of localized retinal nerve fiber layer (RNFL) defects according to baseline intraocular pressure (IOP) level in cases of early primary open-angle glaucoma (POAG). Study design Retrospective comparative study. Methods POAG patients meeting the following conditions were consecutively included: (1) baseline office-hour diurnal IOP ≤ 21 mmHg, (2) 1 localized RNFL defect as observed on red-free fundus photography, and (3) corresponding visual field defect. Defects’ approximations to the macula (angle α) and width (angle ß) as well as the angle between the disc long axis and the vertical meridian line (angle Ɣ) were measured on red-free fundus photography. The corrected angle α was calculated as the difference between angles α and Ɣ. The defect area’s RNFL thickness was calculated by means of optical coherence tomography’s Advanced Extraction analysis utility. Results Comparative analysis was performed between 2 groups: 45 eyes of 45 patients with low-teen IOP (group A: highest IOP ≤ 15 mmHg) and 49 eyes of 49 patients with high-teen IOP (group B: lowest IOP &gt; 15 mmHg). In group A, the mean baseline IOP was lower (12.9 ± 1.3 vs 17.1 ± 1.0 mmHg; P &lt; .001), the corrected angle α was smaller (32.4 ± 15.1 vs 39.5 ± 13.1 degrees; P = .017), and the defect area’s RNFL thickness was thinner (66.3 ± 16.8 vs 76.3 ± 14.9 μm; P = .003) than in group B; angle ß showed no intergroup difference ( P = .230). Conclusions In POAG patients with low-teen IOP relative to those with high-teen IOP, localized RNFL defects were closer to the macula. 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Medical Complete (Alumni)</collection><collection>Algology Mycology and Protozoology Abstracts (Microbiology C)</collection><collection>Biotechnology and BioEngineering Abstracts</collection><collection>MEDLINE - Academic</collection><jtitle>Japanese journal of ophthalmology</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Ha, Ahnul</au><au>Kim, Tai Jun</au><au>Lee, Won June</au><au>Kim, Dong Myung</au><au>Jeoung, Jin Wook</au><au>Kim, Young Kook</au><au>Park, Ki Ho</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Quantitative analysis of retinal nerve fiber layer defect in early open-angle glaucoma with normal intraocular pressure</atitle><jtitle>Japanese journal of ophthalmology</jtitle><stitle>Jpn J Ophthalmol</stitle><addtitle>Jpn J Ophthalmol</addtitle><date>2020-05-01</date><risdate>2020</risdate><volume>64</volume><issue>3</issue><spage>278</spage><epage>284</epage><pages>278-284</pages><issn>0021-5155</issn><eissn>1613-2246</eissn><abstract>Purpose To quantitatively analyze the topographic features of localized retinal nerve fiber layer (RNFL) defects according to baseline intraocular pressure (IOP) level in cases of early primary open-angle glaucoma (POAG). Study design Retrospective comparative study. Methods POAG patients meeting the following conditions were consecutively included: (1) baseline office-hour diurnal IOP ≤ 21 mmHg, (2) 1 localized RNFL defect as observed on red-free fundus photography, and (3) corresponding visual field defect. Defects’ approximations to the macula (angle α) and width (angle ß) as well as the angle between the disc long axis and the vertical meridian line (angle Ɣ) were measured on red-free fundus photography. The corrected angle α was calculated as the difference between angles α and Ɣ. The defect area’s RNFL thickness was calculated by means of optical coherence tomography’s Advanced Extraction analysis utility. Results Comparative analysis was performed between 2 groups: 45 eyes of 45 patients with low-teen IOP (group A: highest IOP ≤ 15 mmHg) and 49 eyes of 49 patients with high-teen IOP (group B: lowest IOP &gt; 15 mmHg). In group A, the mean baseline IOP was lower (12.9 ± 1.3 vs 17.1 ± 1.0 mmHg; P &lt; .001), the corrected angle α was smaller (32.4 ± 15.1 vs 39.5 ± 13.1 degrees; P = .017), and the defect area’s RNFL thickness was thinner (66.3 ± 16.8 vs 76.3 ± 14.9 μm; P = .003) than in group B; angle ß showed no intergroup difference ( P = .230). Conclusions In POAG patients with low-teen IOP relative to those with high-teen IOP, localized RNFL defects were closer to the macula. In addition, the RNFL thickness of the defect area was markedly thinner.</abstract><cop>Tokyo</cop><pub>Springer Japan</pub><pmid>32062849</pmid><doi>10.1007/s10384-019-00704-4</doi><tpages>7</tpages><orcidid>https://orcid.org/0000-0002-8137-8843</orcidid></addata></record>
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subjects Adult
Clinical Investigation
Comparative analysis
Comparative studies
Defects
Diurnal
Eye (anatomy)
Female
Glaucoma
Glaucoma, Open-Angle - diagnostic imaging
Glaucoma, Open-Angle - pathology
Humans
Intraocular pressure
Intraocular Pressure - physiology
Male
Mathematical analysis
Medicine
Medicine & Public Health
Middle Aged
Nerve Fibers - pathology
Ophthalmology
Optic Nerve Diseases - diagnostic imaging
Optic Nerve Diseases - pathology
Optical Coherence Tomography
Photography
Pressure
Quantitative analysis
Retina
Retinal Ganglion Cells - pathology
Retrospective Studies
Thickness
Tomography, Optical Coherence
Tonometry, Ocular
Vision Disorders - physiopathology
Visual field
Visual Field Tests
Visual fields
Visual Fields - physiology
Visual observation
title Quantitative analysis of retinal nerve fiber layer defect in early open-angle glaucoma with normal intraocular pressure
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