Related Experiment Video
Updated: Feb 16, 2026

Endoscopic Approach for Colloid Cyst Resection
Published on: May 23, 2025
Successful removal of a large conjunctival cyst using colored 2.3% sodium hyaluronate
Akira Kobayashi1, Kazuhisa Sugiyama
1Department of Ophthalmology, Kanazawa University Graduate School of Medical Science, Kanazawa, Ishikawa, Japan.
Abstract:
A 39-year-old woman was referred for the management of a large conjunctival cyst in her right eye. A mixture of trypan blue and 2.3% sodium hyaluronate was injected into the cyst using a 27-gauge needle to achieve a complete removal of the cyst. This new technique provided excellent visualization to achieve an easy and complete resection of the large conjunctival cyst. Colored 2.3% sodium hyaluronate is effective in delineating the capsule and preserving its integrity during the removal of a large conjunctival cyst. Such a technique may also have a role in facilitating visualization and excision of other cystic lesions from the ocular surface.
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