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Detection of microplastics in pterygium tissue: Implications for environmental hazards

Yun-Hee Choi1,2, Nayoon Park1, Seul-Ah Park3

  • 1Department of Ophthalmology, Korea University College of Medicine, Seoul, South Korea.

European Journal of Ophthalmology
|January 7, 2025
PubMed

Insights

Microplastics were detected in human pterygium tissue, indicating potential exposure of the ocular surface to environmental hazards. This study identified polyethylene, polystyrene, and polypropylene fragments in the patient's eye tissue.

Area of Science:

  • Ophthalmology
  • Environmental Science
  • Materials Science

Background:

  • Pterygium is a common ocular surface condition.
  • Microplastics (MPs) are emerging environmental contaminants.
  • The presence and impact of MPs on ocular tissues are not well understood.

Purpose of the Study:

  • To report the first case of microplastic detection in human pterygium tissue.
  • To characterize the number, morphology, and material type of MPs found.
  • To highlight the potential ocular surface exposure to environmental MPs.

Main Methods:

  • Surgical removal of a recurrent pterygium specimen from a patient.
  • Analysis using Raman microscopy and scanning electron microscopy.
  • Identification and characterization of microplastic particles.

Main Results:

  • Ten microplastic particles were identified in the pterygium tissue.
  • Detected MPs included polyethylene (7), polystyrene (2), and polypropylene (1).
  • Particle sizes ranged from 5-99 µm; all were transparent, irregular fragments.

Conclusions:

  • Microplastics can be detected in human pterygium tissue.
  • This finding suggests potential common exposure of the ocular surface to environmental microplastics.
  • Further research is needed to understand the implications of MPs on ocular health.
Keywords:
Pterygiumenvironmental hazardsmicroplasticsocular surfacetissue

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