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Biodegradable microspheres for vitreoretinal drug delivery.

R Herrero-Vanrell1, M F Refojo

  • 1Dpto Farmacia y Tecnología Farmacéutica, Facultad de Farmacia, Universidad Complutense, 28040, Madrid, Spain. rociohv@eucmax.sim.ucm.es

Advanced Drug Delivery Reviews
|October 24, 2001
PubMed
Summary

Biodegradable polymeric microspheres offer a promising alternative to frequent intravitreous injections for treating vitreoretinal diseases, enabling sustained drug delivery and reducing complication risks.

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Area of Science:

  • Ophthalmology
  • Biomaterials Science
  • Drug Delivery Systems

Background:

  • Vitreoretinal disorders are a leading cause of blindness.
  • Current treatments necessitate frequent intravitreous injections, increasing complication risks.
  • Controlled drug delivery systems present a viable alternative for sustained ocular drug levels.

Purpose of the Study:

  • To review literature on biodegradable polymeric microspheres for intravitreous injection.
  • To highlight their potential in treating vitreoretinal diseases.
  • To discuss advantages over conventional intravitreous injections.

Main Methods:

  • Literature review of biodegradable polymeric microspheres for ocular drug delivery.
  • Focus on microspheres for intravitreous injection to treat posterior segment diseases.

Related Experiment Videos

  • Analysis of polymers like poly(lactic acid) and poly(glycolic acid).

    • Main Results:

    • Biodegradable polymeric microspheres enable sustained drug release via single intravitreous injection.
    • Commonly used polymers (PLA, PGA) are biocompatible and biodegradable.
    • These systems offer an alternative to repeated injections for vitreoretinal pathologies.

    Conclusions:

    • Biodegradable polymeric microspheres are effective for sustained drug delivery in the posterior eye.
    • They reduce the need for frequent intravitreous injections, thereby minimizing risks.
    • This technology holds significant potential for managing vitreoretinal diseases.