Evidence map›Paper›PMID 21820076›Full record

ArticleProgress in retinal and eye research2011

Oxygen-deficient metabolism and corneal edema.

B K Leung, J A Bonanno, C J Radke

Abstract read
In one paragraph

Article in Progress in retinal and eye research, 2011. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 50 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
50citing papers in PubMed, 1 pooled it
0.3field-weighted citation impact, top 33% 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

50 citing papers in PubMed, 1 synthesis or guideline pooled it, 1 citations in OpenAlex.

  1. Corneal and Intraocular Pressure Responses to Scleral Lens Wear: A Meta-Analysis.Ophthalmic & physiological optics : the journal of the British College of Ophthalmic Opticians (Optometrists) · 2026
    Pooled it
  2. Trial
  3. Article
  4. Article
  5. Review
  6. Article
  7. Review
  8. 3D Printing Strategies for Bioengineering Human Cornea.Advanced healthcare materials · 2026
    Review
  9. DAPL1 is activated by Np63 and GRα and regulates lipid metabolism.Journal of molecular medicine (Berlin, Germany) · 2026
    Article
  10. Article
  11. A mathematical model of corneal endothelium pump function.Journal of the Royal Society, Interface · 2025
    Article
  12. A new three-dimensional model to describe human corneal oxygenation during contact lenses wear.Ophthalmic & physiological optics : the journal of the British College of Ophthalmic Opticians (Optometrists) · 2025
    Article
  13. Article
  14. Biomolecules · 2025
    Review
  15. Article
  16. Article
  17. Article
  18. Optical microsensing reveals spatiotemporal oxygen dynamics in cornea wounds that affect healing via reactive oxygen species.FASEB journal : official publication of the Federation of American Societies for Experimental Biology · 2024
    Article
  19. Article
  20. Article
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

3 authors at 2 institutions in 1 country.

B K LeungChemical and Biomolecular Engineering Department, University of California, Berkeley, CA 94720, USA.
J A Bonanno
C J Radke
University of California, Berkeley · USIndiana University Bloomington · US

Funding

Core Support for Vision Research at Indiana UniversityP30EY019008 · NEI · TRUSTEES OF INDIANA UNIVERSITY · PI BURNS, STEPHEN A · 2009 to 2013
$2.1M
CORNEAL METABOLIC ACTIVITY IN HUMANSR01EY012934 · NEI · INDIANA UNIVERSITY BLOOMINGTON · PI BONANNO, JOSEPH AURELIO · 2000 to 2002
$584k
VISION RESEARCH AT INDIANA UNIVERSITYR24EY016661 · NEI · TRUSTEES OF INDIANA UNIVERSITY · PI BONANNO, JOSEPH AURELIO · 2005 to 2008
$435k
NEI NIH HHS R01 EY012934NEI NIH HHS R24 EY016661
6 · The paper itself

Abstract

Wear of low-oxygen-transmissible soft contact lenses swells the cornea significantly, even during open eye. Although oxygen-deficient corneal edema is well-documented, a self-consistent quantitative prediction based on the underlying metabolic reactions is not available. We present a biochemical description of the human cornea that quantifies hypoxic swelling through the coupled transport of water, salt, and respiratory metabolites. Aerobic and anaerobic consumption of glucose, as well as acidosis and pH buffering, are incorporated in a seven-layer corneal model (anterior chamber, endothelium, stroma, epithelium, postlens tear film, contact lens, and prelens tear film). Corneal swelling is predicted from coupled transport of water, dissolved salts, and especially metabolites, along with membrane-transport resistances at the endothelium and epithelium. At the endothelium, the Na+/K+ - ATPase electrogenic channel actively transports bicarbonate ion from the stroma into the anterior chamber. As captured by the Kedem-Katchalsky membrane-transport formalism, the active bicarbonate-ion flux provides the driving force for corneal fluid pump-out needed to match the leak-in tendency of the stroma. Increased lactate-ion production during hypoxia osmotically lowers the pump-out rate requiring the stroma to swell to higher water content. Concentration profiles are predicted for glucose, water, oxygen, carbon dioxide, and hydronium, lactate, bicarbonate, sodium, and chloride ions, along with electrostatic potential and pressure profiles. Although the active bicarbonate-ion pump at the endothelium drives bicarbonate into the aqueous humor, we find a net flux of bicarbonate ion into the cornea that safeguards against acidosis. For the first time, we predict corneal swelling upon soft-contact-lens wear from fundamental biophysico-chemical principles. We also successfully predict that hypertonic tear alleviates contact-lens-induced edema.

Indexed as

Contact Lenses, HydrophilicCorneal EdemaEpithelium, CornealHumansHypoxiaIon PumpsModels, TheoreticalOxygenIon PumpsOxygen

Identifiers

PMID21820076
PMCPMC4101817
OpenAlexW1618501901

What OpenQuestion holds

Textmetadata
LicenceTDM
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.