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Progression patterns of normal-tension glaucoma groups classified by hierarchical cluster analysis

 Eun Woo Kim  ;  Hyo Song Park  ;  Wungrak Choi  ;  Kwanghyun Lee  ;  Sang Yeop Lee  ;  Gong Je Seong  ;  Chan Yun Kim  ;  Hyoung Won Bae 
 EYE, Vol.35(2) : 536-543, 2021-02 
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Objectives: To investigate differences in progression patterns of normal-tension glaucoma (NTG) patients in three clusters classified by hierarchical cluster analysis (HCA). Materials and methods: In a retrospective study, 200 eyes of NTG patients classified by HCA in 2015 who were followed up to the current date were evaluated. Peripapillary retinal nerve fibre layer (RNFL) thicknesses were measured by Cirrus HD-OCT and progression rate was calculated by trend analysis (Guided Progression Analysis [GPA]). VF progression rate was evaluated by linear regression analysis of mean deviation (MD). Progression patterns of three clusters were compared by histograms. Results: In total, 153 eyes of 153 patients were followed up. Mean observation period was 5 years. RNFL reduction rate was -0.83 μm/year in cluster 1, which showed early glaucomatous damage in previous reports; -0.45 μm/year in cluster 2, which showed moderate glaucomatous damage; and -0.36 μm/year in cluster 3, which showed young and myopic glaucomatous damage. The progression pattern of cluster 3 showed a double-peak distribution; RNFL reduction rate was 0.11 μm/year in the non-progressive group and -1.07 μm/year in the progressive group. Conclusion: The progression patterns were different among three NTG groups that were divided by HCA. In particular, the group of young and myopic eyes showed a mixture of two different patterns.
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1. College of Medicine (의과대학) > Dept. of Ophthalmology (안과학교실) > 1. Journal Papers
Yonsei Authors
Kim, Chan Yun(김찬윤) ORCID logo https://orcid.org/0000-0002-8373-9999
Park, Hyo Song(박효송)
Bae, Hyoung Won(배형원) ORCID logo https://orcid.org/0000-0002-8421-5636
Seong, Gong Je(성공제) ORCID logo https://orcid.org/0000-0002-5456-4296
Lee, Kwanghyun(이광현) ORCID logo https://orcid.org/0000-0002-1587-3387
Lee, Sang Yeop(이상엽) ORCID logo https://orcid.org/0000-0002-3834-7953
Choi, Wungrak(최웅락) ORCID logo https://orcid.org/0000-0002-3015-2502
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