ArticleExperimental eye research2019
Collagenase injection into the suprachoroidal space of the eye to expand drug delivery coverage and increase posterior drug targeting.
Article in Experimental eye research, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 9 papers.
What it found
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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.
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.
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Who cites it
9 citing papers in PubMed, 20 citations in OpenAlex.
- Biomechanical Modification of the Sclera: An Ex Vivo Study on Porcine Eyes.Investigative ophthalmology & visual science · 2026Article
- Bibliometric and visualized analysis of the therapeutic application of suprachoroidal space from 2000 to 2024.International journal of surgery (London, England) · 2026Article
- Suprachoroidal Injection: A Novel Approach for Targeted Drug Delivery.Pharmaceuticals (Basel, Switzerland) · 2023Review
- Transscleral Delivery of Dexamethasone-Loaded Microparticles Using a Dissolving Microneedle Array.Pharmaceutics · 2023Article
- Suprachoroidal Delivery in Rats and Guinea Pigs Using a High-Precision Microneedle Injector.Translational vision science & technology · 2023Article
- Drug Delivery via the Suprachoroidal Space for the Treatment of Retinal Diseases.Pharmaceutics · 2021Review
- Transpupillary collagen photocrosslinking for targeted modulation of ocular biomechanics.Biomaterials · 2021Article
- Retinal Tropism and Transduction of Adeno-Associated Virus Varies by Serotype and Route of Delivery (Intravitreal, Subretinal, or Suprachoroidal) in Rats.Human gene therapy · 2020Article
- Suprachoroidal Delivery of Viral and Nonviral Gene Therapy for Retinal Diseases.Journal of ocular pharmacology and therapeutics : the official journal of the Association for Ocular Pharmacology and TherapeuticsReview
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
4 authors at 3 institutions in 2 countries.
Funding
Abstract
Injection into the suprachoroidal space (SCS) allows drug delivery targeted to sclera, choroid, and retina. Here, we studied SCS injection formulated with collagenase to expand drug delivery coverage and increase posterior drug targeting within SCS by breaking down collagen fibrils that link sclera and choroid in the SCS. When 1 μm latex microparticles were injected with a collagenase formulation using microneedles into the SCS of rabbit eyes ex vivo and incubated at 37 °C for 4 h, microparticle delivery coverage increased from 20% to 45% and enhanced posterior drug targeting. Collagenase concentration was optimized to 0.5 mg/mL to maximize expanded posterior delivery and minimize tissue damage. Effects of collagenase injection within SCS increased and then plateaued 4 h after injection. Simultaneous injection of collagenase and microparticles had a greater effect on expanded delivery in the SCS compared to sequential injection. Collagenase injection into the SCS of rabbit eyes in vivo was also effective to expand delivery and was generally well-tolerated, showing transiently lowered IOP, but no apparent lasting adverse effects on ocular tissues such as sclera, choroid, and retina, as determined by analyzing histology, sclera tensile strength, and fundus imaging. We conclude that addition of collagenase during SCS injection can expand drug delivery coverage and increase posterior drug targeting.
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Registered trials
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.