Evidence map›Paper›PMID 22752935›Full record

ArticlePharmaceutical research2012

Simulating intravitreal injections in anatomically accurate models for rabbit, monkey, and human eyes.

Paul J Missel

Abstract read
In one paragraph

Article in Pharmaceutical research, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 48 papers.

0numbers the graph read from it
0cells of the map it votes in
48citing 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

48 citing papers in PubMed.

  1. Review
  2. Review
  3. Article
  4. Pharmacokinetic model for drug delivery by Ozurdex.Drug delivery and translational research · 2026
    Article
  5. Article
  6. Article
  7. Mathematical Models of Topically and Intravitreally Applied Ranibizumab.Investigative ophthalmology & visual science · 2025
    Article
  8. Article
  9. Article
  10. Article
  11. Article
  12. Article
  13. Article
  14. Mathematical Models of Ocular Drug Delivery.Investigative ophthalmology & visual science · 2024
    Review
  15. Article
  16. Drug Distribution After Intravitreal Injection: A Mathematical Model.Investigative ophthalmology & visual science · 2024
    Article
  17. Experimental and mathematical approaches for drug delivery for the treatment of wet age-related macular degeneration.Journal of controlled release : official journal of the Controlled Release Society · 2023
    Review
  18. 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

1 author.

Paul J MisselModeling and Simulation, Alcon Research Ltd., Mail Stop TC-47, 6201 South Freeway, Fort Worth, Texas 76134, USA. paul.missel@alconlabs.com

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

purposeTo develop models for rabbit, monkey, and human that enable prediction of the clearance after intravitreal (IVT) injections in one species from experimental results obtained in another species.

methodsAnatomically accurate geometric models were constructed for rabbit, monkey, and human that enabled computational fluid dynamic simulation of clearance of an IVT injected bolus. Models were constructed with and without the retrozonular space of Petit. Literature data on clearance after IVT injection of substances spanning a range of molecular weight up to 157 kDa were used to validate the rabbit model.

resultsThe space of Petit had a significant increase on the clearance of slowly diffusing substances cleared by the anterior pathway by reducing the bottleneck for drug efflux. Models that did not include this zone could not accurately predict the clearance of slowly diffusing substances whose clearance was accelerated by intraocular pressure-driven convection.

conclusionsThe ocular anatomy must be carefully reconstructed in the model to enable accurate predictions of clearance. This method offers an alternative means for scaling experimental data from one species to another that may be more appropriate than other simple approaches based entirely upon scaling of compartment volumes and flow rates.

Indexed as

Intravitreal InjectionsPharmacokineticsAnimalsComputer SimulationEyeHaplorhiniHumansHydrodynamicsMetabolic Clearance RateModels, AnatomicModels, BiologicalPharmaceutical PreparationsRabbitsPharmaceutical Preparations

Identifiers

PMID22752935
PMCPMC3497967

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.