Evidence map›Paper›PMID 24715758›Full record

ArticleMolecular vision2014

Growth of the eye lens: I. Weight accumulation in multiple species.

Robert C Augusteyn

Abstract read
In one paragraph

Article in Molecular vision, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 28 papers.

0numbers the graph read from it
0cells of the map it votes in
28citing 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

28 citing papers in PubMed.

  1. State-of-the-Art Age Determination Methods for Amphibians and Reptiles.Animals : an open access journal from MDPI · 2025
    Review
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  3. Review
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  5. Article
  6. Methodology Advances in Vertebrate Age Estimation.Animals : an open access journal from MDPI · 2024
    Review
  7. Review
  8. Article
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  19. Article
  20. The lens growth process.Progress in retinal and eye research · 2017
    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

1 author.

Robert C AugusteynVision Cooperative Research Centre, School of Optometry and Vision Science, University of NSW, Sydney, Australia ; Ophthalmic Biophysics Center, Bascom Palmer Eye Institute, University of Miami Miller School of Medicine, Miami, FL ; Biochemistry Department, La Trobe University, Bundoora, Australia.

Funding

Optomechanical charactristics of lens accommodationR01EY014225 · NEI · UNIVERSITY OF MIAMI SCHOOL OF MEDICINE · PI MANNS, FABRICE · 2002 to 2019
$5.5M
NEI NIH HHS R01 EY014225NEI NIH HHS R01EY014225
6 · The paper itself

Abstract

purposeTo examine the accumulation of wet and/or dry weight in the ocular lens as a function of age in different species.

methodsWet weights and/or fixed dry weights were obtained from measurements in the author's laboratory and from the literature for over 14,000 lenses of known-ages, representing 130 different species. Various algorithms were tested to determine the most suitable for describing the relationship between lens weight and age.

resultsFor 126 of the species examined, lens growth is continuous throughout life but asymptotic and can be reasonably described with a single logistic equation, W=Wm e(-(k/A)), where W is lens wet or dry weight; Wm is the maximum asymptotic weight, k is the logistic growth constant and A is the time from conception. For humans, elephants, hippopotami, minks, wild goats and woodchucks, lens growth appears to be biphasic. No gender differences could be detected in the lens weights for 70 species but male lenses are reportedly 10% larger than those of females in northern fur seals and pheasants. Dry weight accumulation is faster than that for wet weight in all species except birds and reptiles where the rates are the same. Low lens growth rates are associated with small animals with short gestation periods and short life spans.

conclusionsLens growth is continuous throughout life and, for most species, is independent of gender. For most, growth takes place through a monophasic asymptotic mode and is unaffected by events such as hibernation. This makes lens weight measurement a reliable tool for age determination of species culled in the wild. Compaction of the growing lens generates different properties, appropriate to an animal's lifestyle. How these events are controlled remains to be established.

Indexed as

AgingAnimalsFemaleHumansLens, CrystallineLogistic ModelsMaleOrgan SizeSpecies Specificity

Identifiers

PMID24715758
PMCPMC3976689

What OpenQuestion holds

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LicenceCC BY-NC-ND
Read underepoch 390

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.