Evidence map›Paper›PMID 31844034›Full record

ArticleAging2019

Age-related changes in eye lens biomechanics, morphology, refractive index and transparency.

Catherine Cheng, Justin Parreno, Roberta B Nowak, Sondip K Biswas, Kehao Wang, Masato Hoshino, Kentaro Uesugi, Naoto Yagi, Juliet A Moncaster, Woo-Kuen Lo and 2 more

Open access · greenAbstract read
In one paragraph

Article in Aging, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 69 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
69citing papers in PubMed, 2 pooled it
3.0field-weighted citation impact, top 8% of its field
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

69 citing papers in PubMed, 2 syntheses or guidelines pooled it, 95 citations in OpenAlex.

  1. Pooled it
  2. Surgical interventions for presbyopia.The Cochrane database of systematic reviews · 2025
    Pooled it
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  17. Association of Body Metrics and Ocular Diseases.Journal of clinical medicine · 2025
    Article
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  20. Article

9 more citing papers are in PubMed but not listed here.

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

12 authors at 6 institutions in 3 countries.

Catherine ChengSchool of Optometry, Indiana University, Bloomington, IN 47405, USA.
Justin ParrenoDepartment of Molecular Medicine, The Scripps Research Institute, La Jolla, CA 92037, USA.
Roberta B NowakDepartment of Molecular Medicine, The Scripps Research Institute, La Jolla, CA 92037, USA.
Sondip K BiswasDepartment of Neurobiology, Morehouse School of Medicine, Atlanta, GA 30303, USA.
Kehao WangSchool of Science and Technology, Nottingham Trent University, Nottingham, United Kingdom.
Masato HoshinoJapan Synchrotron Radiation Research Institute (Spring-8), Sayo-cho, Sayo-gun, Hyogo, Japan.
Kentaro UesugiJapan Synchrotron Radiation Research Institute (Spring-8), Sayo-cho, Sayo-gun, Hyogo, Japan.
Naoto YagiJapan Synchrotron Radiation Research Institute (Spring-8), Sayo-cho, Sayo-gun, Hyogo, Japan.
Juliet A MoncasterDepartment of Radiology, Boston University School of Medicine, Boston, MA 02118, USA.
Woo-Kuen LoDepartment of Neurobiology, Morehouse School of Medicine, Atlanta, GA 30303, USA.
Barbara PierscionekSchool of Science and Technology, Nottingham Trent University, Nottingham, United Kingdom.
Velia M FowlerDepartment of Molecular Medicine, The Scripps Research Institute, La Jolla, CA 92037, USA.
Japan Synchrotron Radiation Research Institute · JPScripps Research Institute · USMorehouse School of Medicine · USNottingham Trent University · GBBoston University · USUniversity of Delaware · US

Funding

Membrane Skeleton Regulation of Cell Shape and Interactions in Lens DevelopmentR01EY017724 · NEI · UNIVERSITY OF DELAWARE · PI FOWLER, VELIA M · 2008 to 2024
$6.9M
THE STUDY OF CELL JUNCTIONS IN THE OCULAR LENSR01EY005314 · NEI · MOREHOUSE SCHOOL OF MEDICINE · PI LO, WOO-KUEN K · 1986 to 2019
$3.6M
Eph-ephrin signaling in the lensR21EY027389 · NEI · TRUSTEES OF INDIANA UNIVERSITY · PI CHENG, CATHERINE KEHSIN · 2017 to 2018
$493k
NEI NIH HHS R01 EY005314NEI NIH HHS R01 EY017724NEI NIH HHS R21 EY027389
6 · The paper itself

Abstract

Life-long eye lens function requires an appropriate gradient refractive index, biomechanical integrity and transparency. We conducted an extensive study of wild-type mouse lenses 1-30 months of age to define common age-related changes. Biomechanical testing and morphometrics revealed an increase in lens volume and stiffness with age. Lens capsule thickness and peripheral fiber cell widths increased between 2 to 4 months of age but not further, and thus, cannot account for significant age-dependent increases in lens stiffness after 4 months. In lenses from mice older than 12 months, we routinely observed cataracts due to changes in cell structure, with anterior cataracts due to incomplete suture closure and a cortical ring cataract corresponding to a zone of compaction in cortical lens fiber cells. Refractive index measurements showed a rapid growth in peak refractive index between 1 to 6 months of age, and the area of highest refractive index is correlated with increases in lens nucleus size with age. These data provide a comprehensive overview of age-related changes in murine lenses, including lens size, stiffness, nuclear fraction, refractive index, transparency, capsule thickness and cell structure. Our results suggest similarities between murine and primate lenses and provide a baseline for future lens aging studies.

Indexed as

AgingAnimalsBiomechanical PhenomenaCataractFemaleLens, CrystallineMaleMice, Inbred C57BLRefraction, Ocularcataractepithelial cellfiber cellstiffnessstrain

Identifiers

PMID31844034
PMCPMC6949082
OpenAlexW2994932050

What OpenQuestion holds

Textmetadata
LicenceCC BY
Read underepoch 390

Registered trials

None linked

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.