Evidence map›Paper›PMID 41732593›Full record

ArticleOphthalmology science2026

Effect of Low-Concentration Atropine Eye Drops on Parapapillary Gamma Zone Development and Enlargement over 3 Years: The LAMP Study.

Xiu Juan Zhang, Yi Li, Yuzhou Zhang, Xiaotong Li, Ka Wai Kam, Charlene Yim, Alvin L Young, Clement C Tham, Li Jia Chen, Jost B Jonas and 3 more

Abstract read
In one paragraph

Article in Ophthalmology science, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 1 paper.

0numbers the graph read from it
0cells of the map it votes in
1citing papers in PubMed
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

1 citing paper in PubMed.

  1. Review
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

13 authors.

Xiu Juan ZhangDepartment of Ophthalmology and Visual Sciences, The Chinese University of Hong Kong, Hong Kong, China.
Yi LiDepartment of Ophthalmology and Visual Sciences, The Chinese University of Hong Kong, Hong Kong, China.
Yuzhou ZhangDepartment of Ophthalmology and Visual Sciences, The Chinese University of Hong Kong, Hong Kong, China.
Xiaotong LiDepartment of Ophthalmology and Visual Sciences, The Chinese University of Hong Kong, Hong Kong, China.
Ka Wai KamDepartment of Ophthalmology and Visual Sciences, The Chinese University of Hong Kong, Hong Kong, China.
Charlene YimDepartment of Ophthalmology and Visual Sciences, The Chinese University of Hong Kong, Hong Kong, China.
Alvin L YoungDepartment of Ophthalmology and Visual Sciences, The Chinese University of Hong Kong, Hong Kong, China.
Clement C ThamDepartment of Ophthalmology and Visual Sciences, The Chinese University of Hong Kong, Hong Kong, China.
Li Jia ChenDepartment of Ophthalmology and Visual Sciences, The Chinese University of Hong Kong, Hong Kong, China.
Jost B JonasDepartment of Ophthalmology and Visual Sciences, The Chinese University of Hong Kong, Hong Kong, China.
Kyoko Ohno-MatsuiDepartment of Ophthalmology and Visual Science, Institute of Science Tokyo, Tokyo, Japan.
Chi Pui PangDepartment of Ophthalmology and Visual Sciences, The Chinese University of Hong Kong, Hong Kong, China.
Jason C YamDepartment of Ophthalmology and Visual Sciences, The Chinese University of Hong Kong, Hong Kong, China.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Purpose: To evaluate the longitudinal changes in the parapapillary gamma zone in children receiving 0.05%, 0.025%, or 0.01% atropine eye drops and placebo/switchover over 3 years based on the Low-Concentration Atropine for Myopia Progression (LAMP) study. Design: A secondary analysis from a randomized controlled trial. Participants: Two hundred eighty children underwent spectral-domain OCT at baseline, which involved 24 equally spaced radial OCT B-scans of the optic nerve head, taken at 1-year intervals. Methods: Children in the LAMP study were randomized to receive 0.05%, 0.025%, 0.01% atropine, or placebo eye drops. In the second year, placebo participants switched to 0.05% atropine. At the beginning of the third year, each group was rerandomized to continued treatment or cessation (washout). The Bruch membrane opening was identified in 48 meridians in each eye. Gamma zone was defined as the parapapillary region without Bruch membrane. Main Outcome Measures: Differences between treatment groups in gamma zone area changes from baseline to the 3-year follow-up visits. Results: Of 238 children included at baseline, the study included 192 (80.7%) children completing the follow-up of 3 years. The cumulative mean gamma zone area changes differed significantly between the initial 0.05%, 0.025%, and 0.01% atropine subgroups (0.09 ± 0.09 mm Conclusions: Low-concentration atropine reduced parapapillary gamma zone enlargement in a concentration-dependent manner over a 3-year treatment period. Continued 0.05% atropine treatment showed efficacy in controlling gamma zone development. Financial Disclosures: The author has no/the authors have no proprietary or commercial interest in any materials discussed in this article.

Indexed as

Low-concentration atropine eye dropsMyopiaOCTParapapillary gamma zone

Identifiers

PMID41732593
PMCPMC12925536

What OpenQuestion holds

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Registered trials

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.