Biocompatibility and Degradation of Ocular Implants in Rabbits
Author Information
Author(s): Peng Yan, Ang Marcus, Foo Selin, Lee Wing Sum, Ma Zhen, Venkatraman Subbu S., Wong Tina T.
Primary Institution: Nanyang Technological University, Singapore
Hypothesis
Can biodegradable subconjunctival implants improve ocular drug delivery and biocompatibility?
Conclusion
Both PLGA50/50 and PLC70/30 microfilms are biocompatible and can be safely implanted in the rabbit eye, with different degradation behaviors.
Supporting Evidence
- The implants showed minimal inflammation and vascularity over a 6-month period.
- PLGA50/50 microfilms degraded faster than PLC70/30 in vivo.
- Histological analysis revealed no significant fibrosis or scarring around the implants.
Takeaway
The study tested two types of eye implants in rabbits to see if they could deliver medicine safely and effectively. Both types worked well, but they broke down at different rates.
Methodology
The study involved surgical implantation of two types of biodegradable microfilms in rabbits, followed by monitoring their degradation and biocompatibility using various imaging and histological techniques.
Potential Biases
Potential bias in subjective assessments during clinical monitoring.
Limitations
The study was conducted in a rabbit model, which may not fully represent human responses.
Participant Demographics
Nine New Zealand white rabbits aged 4–6 months, weighing 2–2.5 kg.
Statistical Information
P-Value
0.91
Statistical Significance
p<0.05
Digital Object Identifier (DOI)
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