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Related Experiment Video

Updated: Jun 12, 2026

Rotating the Intraocular Lens to Prevent Posterior Capsular Opacification in Cataract Surgeries

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Published on: July 7, 2023

Disposable Endoscope Cap Maintaining Clear Surgical Visualization under Fogging and Fouling.

Kayoung Son¹, Yeontaek Lee^1,2, Kyungwon Lee^1,3

¹School of Electrical and Electronic Engineering, Yonsei University, Seoul 03722, Republic of Korea.

ACS Applied Materials & Interfaces

|June 10, 2026

Summary

This summary is machine-generated.

A new endoscopic lens cap, SHIELD-C, uses a liquid interface to prevent fogging and contamination. This innovation maintains clear surgical visualization, improving patient safety and procedural flow.

Keywords:

anti-fogging surface endoscope accessories endoscopic surgery lens fouling visualization stability

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Area of Science:

Biomedical Engineering
Materials Science
Surgical Technology

Background:

Lens fogging and biological contamination are critical issues in endoscopic surgery, impairing visualization and patient safety.
Existing solutions often fail to provide sustained clarity or disrupt surgical workflow.

Purpose of the Study:

To develop and validate a novel endoscopic lens cap, SHIELD-C, designed to maintain stable visualization.
To address the unmet needs of lens fogging and biological fouling during endoscopic procedures.

Main Methods:

Development of SHIELD-C, a single-use cap with a dual-layer architecture: a polydimethylsiloxane (PDMS) brush base and an infused silicone oil top layer.
Formation of a stable liquid-liquid interface for optical clarity and antifouling properties.
Validation through in vitro tests under challenging conditions and ex vivo surgical models.

Main Results:

SHIELD-C demonstrated high optical clarity (>90% transmittance) and effective antifouling properties (sliding angle <10°).
The liquid interface allowed for rapid intraoperative restoration of clarity via lubricant replenishment.
Validated durability and optical stability in chemically and mechanically demanding tests and ex vivo models.

Conclusions:

SHIELD-C effectively maintains endoscopic visualization by creating a durable, superlubricious liquid-liquid interface.
This technology enhances the reliability and continuity of endoscopic procedures by mitigating lens fouling.
SHIELD-C represents a significant advancement in endoscopic surgical tools, improving safety and workflow.