The Myopic Normal Tension Glaucoma Treatment Study (MYNT-GTS): Protocol and Baseline Characteristics of a Randomized Controlled Trial
10 affiliations
- 1Department of Ophthalmology, Seoul National University College of Medicine, Seoul National University Bundang Hospital, Seongnam 13620, Republic of Korea
- 2Department of Ophthalmology, Kangbuk Samsung Hospital, Sungkyunkwan University School of Medicine, Seoul 03181, Republic of Korea
- 3Department of Ophthalmology, Pusan National University College of Medicine, Pusan National University Hospital, Busan 49241, Republic of Korea
- 4Department of Ophthalmology, Pusan National University College of Medicine, Pusan National University Yangsan Hospital, Yangsan 50612, Republic of Korea
- 5Department of Ophthalmology, Chonnam National University Hospital, Gwangju 61469, Republic of Korea
- 6Department of Ophthalmology, Ewha Womans University College of Medicine, Ewha Womans University Seoul Hospital, Seoul 07804, Republic of Korea
- 7Department of Ophthalmology, Institute of Health Sciences, Gyeongsang National University School of Medicine, Gyeongsang National University Hospital, Jinju 52727, Republic of Korea
- 8Department of Ophthalmology, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul 06351, Republic of Korea
- 9Department of Ophthalmology, Kangwon National University School of Medicine, Chuncheon 24341, Republic of Korea
- 10Department of Ophthalmology, Seoul National University Boramae Medical Center, Seoul 07061, Republic of Korea
Abstract
Background/Objectives: To describe the study protocol and baseline characteristics of participants in the Myopic Normal-Tension Glaucoma Treatment Study (MYNT-GTS), which is a randomized controlled trial evaluating the effect of intraocular pressure (IOP)-lowering treatment on glaucoma progression in eyes with myopic normal-tension glaucoma (NTG). Methods: A prospective, multicenter, randomized controlled clinical trial and baseline cross-sectional analysis. The study enrolled 473 treatment-naïve NTG eyes with myopia (spherical equivalent ≤ −1.0 diopters or axial length [AXL] > 24.0 mm) aged 20–60 years from 9 tertiary referral centers in South Korea. Participants were randomized at a 1:1 ratio into a treated group and an untreated group managed by active surveillance, and stratified by age, baseline IOP, AXL, and visual field (VF) mean deviation (MD). Treatment was initiated or intensified when predefined structural or functional progression was detected. Comprehensive examinations including quantitative assessments of the optic nerve head structure and microvasculature, medication adherence, and quality of life were performed every 4 months during the first year and every 6 months thereafter. Glaucoma progression was assessed from the rate of circumpapillary retinal nerve fiber layer (RNFL) thinning, and the rate of VF deterioration was assessed from the MD or visual field index (VFI). Results: The 473 enrolled participants comprised 239 assigned to the treated group and 234 to the untreated group. Most of the baseline variables did not differ significantly between the groups, including age (43.1 ± 9.1 vs. 43.9 ± 9.1 years [mean ± standard deviation], p = 0.33), baseline IOP (14.9 ± 2.6 vs. 14.7 ± 2.5 mmHg, p = 0.26), AXL (26.31 ± 1.37 vs. 26.32 ± 1.34 mm, p = 0.94), global RNFL thickness (79.5 ± 11.4 vs. 80.5 ± 13.2 μm, p = 0.38), and VF MD (−2.71 ± 2.58 vs. −2.32 ± 2.52 dB, p = 0.10). Conclusions: The vast majority of the analyzed variables did not differ significantly between the treated and untreated groups at baseline, supporting the validity of the subsequent comparisons. As the first prospective, multicenter randomized controlled trial dedicated to myopic NTG, the MYNT-GTS should clarify the efficacy of IOP-lowering treatment and inform the individualized management of myopic NTG. Trial Registration: Clinical Research Information Service (CRIS), Republic of Korea, KCT0005225.
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BibTeX
@article{lee2026myopic,
title = {{The Myopic Normal Tension Glaucoma Treatment Study (MYNT-GTS): Protocol and Baseline Characteristics of a Randomized Controlled Trial}},
author = {Eun Ji Lee and Joon Mo Kim and Jiwoong Lee and Sangwoo Moon and Sang Woo Park and Mi Sun Sung and Ji-Ah Kim and Gyu-Nam Kim and Jong Chul Han and Ji Eun Song and Kyoung Min Lee and Tae-Woo Kim},
journal = {Journal of clinical medicine},
year = {2026},
month = oct,
doi = {10.3390/jcm15197734},
url = {https://europepmc.org/article/PMC/PMC13666113},
note = {CC BY},
}
RIS
TY - JOUR
TI - The Myopic Normal Tension Glaucoma Treatment Study (MYNT-GTS): Protocol and Baseline Characteristics of a Randomized Controlled Trial
AU - Eun Ji Lee
AU - Joon Mo Kim
AU - Jiwoong Lee
AU - Sangwoo Moon
AU - Sang Woo Park
AU - Mi Sun Sung
AU - Ji-Ah Kim
AU - Gyu-Nam Kim
AU - Jong Chul Han
AU - Ji Eun Song
AU - Kyoung Min Lee
AU - Tae-Woo Kim
PY - 2026
DA - 2026/10/01
JO - Journal of clinical medicine
DO - 10.3390/jcm15197734
UR - https://europepmc.org/article/PMC/PMC13666113
AB - Background/Objectives: To describe the study protocol and baseline characteristics of participants in the Myopic Normal-Tension Glaucoma Treatment Study (MYNT-GTS), which is a randomized controlled trial evaluating the effect of intraocular pressure (IOP)-lowering treatment on glaucoma progression in eyes with myopic normal-tension glaucoma (NTG). Methods: A prospective, multicenter, randomized controlled clinical trial and baseline cross-sectional analysis. The study enrolled 473 treatment-naïve NTG eyes with myopia (spherical equivalent ≤ −1.0 diopters or axial length [AXL] > 24.0 mm) aged 20–60 years from 9 tertiary referral centers in South Korea. Participants were randomized at a 1:1 ratio into a treated group and an untreated group managed by active surveillance, and stratified by age, baseline IOP, AXL, and visual field (VF) mean deviation (MD). Treatment was initiated or intensified when predefined structural or functional progression was detected. Comprehensive examinations including quantitative assessments of the optic nerve head structure and microvasculature, medication adherence, and quality of life were performed every 4 months during the first year and every 6 months thereafter. Glaucoma progression was assessed from the rate of circumpapillary retinal nerve fiber layer (RNFL) thinning, and the rate of VF deterioration was assessed from the MD or visual field index (VFI). Results: The 473 enrolled participants comprised 239 assigned to the treated group and 234 to the untreated group. Most of the baseline variables did not differ significantly between the groups, including age (43.1 ± 9.1 vs. 43.9 ± 9.1 years [mean ± standard deviation], p = 0.33), baseline IOP (14.9 ± 2.6 vs. 14.7 ± 2.5 mmHg, p = 0.26), AXL (26.31 ± 1.37 vs. 26.32 ± 1.34 mm, p = 0.94), global RNFL thickness (79.5 ± 11.4 vs. 80.5 ± 13.2 μm, p = 0.38), and VF MD (−2.71 ± 2.58 vs. −2.32 ± 2.52 dB, p = 0.10). Conclusions: The vast majority of the analyzed variables did not differ significantly between the treated and untreated groups at baseline, supporting the validity of the subsequent comparisons. As the first prospective, multicenter randomized controlled trial dedicated to myopic NTG, the MYNT-GTS should clarify the efficacy of IOP-lowering treatment and inform the individualized management of myopic NTG. Trial Registration: Clinical Research Information Service (CRIS), Republic of Korea, KCT0005225.
SN - 2077-0383
ER -