Related Experiment Video
Updated: Apr 18, 2026
A Step by Step Protocol for Subretinal Surgery in Rabbits
Published on: September 13, 2016
Retained silicone tip of diamond-dusted membrane scraper during vitrectomy in a valved cannula system
V Felcida1, N Kumar2, R Haynes2
1Department of Vitreoretinal Surgery, Birmingham & Midland Eye Centre, Birmingham, UK.
Purpose:
To report a complication of retained silicone tip from a diamond-dusted membrane scraper (DDMS) that occurred while using a valved cannula vitrectomy system.
Method:
Retrospective review of three cases that underwent 23 gauge (G) sutureless vitrectomy for idiopathic macular hole (cases 1 and 2) and myopic macular schisis (case 3).
Results:
In all three cases following a standard vitrectomy, the internal limiting membrane (ILM) peeling was initiated by using a 23G DDMS. During the insertion of the DDMS, the flexible silicone tip of the 23G DDMS was detached from the metal shaft and was retained in the 23G valve system and in case 3, the silicone tip got dislodged from the valve onto the retina. Subsequent ILM peeling was completed by using an end-gripping forceps. All underwent intravitreal gas injection at the end. No other complications were noted.
Conclusion:
These three cases demonstrate an uncommon complication of retained silicone tip within the valved cannula vitrectomy system and this complication should be considered while using flexible instruments in valved cannula systems.
Insights
A retained silicone tip from a diamond-dusted membrane scraper (DDMS) is an uncommon complication during valved cannula vitrectomy. Surgeons should consider this risk when using flexible instruments with valved systems.
Area of Science:
- Ophthalmology
- Surgical Technology
- Retinal Surgery
Background:
- Valved cannula vitrectomy systems are widely used in modern retinal surgery.
- Diamond-dusted membrane scrapers (DDMS) are employed for internal limiting membrane (ILM) peeling.
- Flexible instruments can pose unique challenges within valved systems.
Observation:
- A retrospective review identified three cases of retained silicone tips from DDMS during vitrectomy.
- The silicone tip detached from the DDMS shaft and was retained within the valved cannula.
- In one case, the dislodged silicone tip landed on the retina.
Findings:
- The retained silicone tip did not cause further complications in the reviewed cases.
- Internal limiting membrane peeling was successfully completed using alternative instruments (end-gripping forceps).
- All patients received intravitreal gas injection post-procedure without additional adverse events.
Implications:
- This complication highlights the potential risks associated with flexible instruments in valved cannula systems.
- Awareness of this issue is crucial for vitreoretinal surgeons.
- Consideration should be given to instrument design and handling techniques to mitigate this risk.
More Related Videos
04:59Author Spotlight: Enhancing Visual Outcomes in Cataract Surgery: A Novel Technique to Prevent Posterior Capsular Opacification Through IOL Rotation
Published on: July 7, 2023
04:36Implantation Protocol of the Foldable Capsular Vitreous Body for Complex Vitreoretinal Surgery
Published on: April 14, 2026
