Related Experiment Video
Updated: Feb 28, 2026

Analyzing the Effects of Stromal Cells on the Recruitment of Leukocytes from Flow
Published on: January 7, 2015
Success Rate of Variable Collar Size Frosted Jones Tubes
C Blake Perry1, Roger A Dailey
1Casey Aesthetic Facial Surgery Center, Casey Eye Institute, Oregon Health & Science University, Portland, Oregon, U.S.A.
Purpose:
To describe success rates and long-term outcomes of conjunctivodacryocystorhinostomy (CDCR) with larger collar (4.5 or 5.0 mm) frosted Jones tubes (FJTs).
Methods:
A retrospective chart review of all patients who received a larger collar (4.5 or 5.0 mm) FJT following CDCR by an author (RAD) was performed between January 1, 2010 and July 1, 2016. Patient demographics, etiology of tearing, follow-up time from placement of larger collar FJT, original tube collar diameter, number and sizes of collar adjustments, tearing status, and complications were recorded. Exclusion criteria included follow up less than 6 months after placement of a larger collar FJT. The study was IRB approved, HIPAA compliant, and adherent to the Declaration of Helsinki.
Results:
Twenty-five patients (29 eyes) met the inclusion criteria. Average follow-up time was 30 months. Twenty-eight out of 29 eyes had complete resolution of tearing after placement of larger collar FJT and no tubes were lost. Fourteen out of 29 eyes required adjustment in collar size after a larger collar was placed. Two out of 13 eyes that had a 5.0 mm collar placed required exchanged due to collar prominence.
Conclusion:
With the use of larger collar FJTs, the long-term success of CDCR in tearing patients remains highly effective. This study demonstrates larger collar FJTs are well tolerated and help reduce the chance of tube loss.
More Related Videos
08:44An In Vitro Hemodynamic Loop Model to Investigate the Hemocytocompatibility and Host Cell Activation of Vascular Medical Devices
Published on: August 21, 2020
11:49Autologous Endothelial Progenitor Cell-Seeding Technology and Biocompatibility Testing For Cardiovascular Devices in Large Animal Model
Published on: September 9, 2011
Related Concept Videos
Tracheostomy: Procedure and Tubes
Tracheostomy tubes can be made of semiflexible plastic (polyurethane or silicone), rigid plastic, or metal, and they come in...
Collar Bearings
Oxygen Delivering System II: Venturi Mask and Transtracheal Oxygen
Venturi Mask
The Venturi mask, named after the Venturi effect, is designed to deliver precise oxygen concentrations. It consists of a large tube with an oxygen inlet that narrows down, causing a pressure drop that pulls air in through adjustable side ports. The mask is a lightweight,...
Pipe Flowrate Measurement: Problem Solving