Related Experiment Videos
Tubing the trabeculectomy: a novel filtration technique
Arnav Panigrahi1, Nishtha Singh1, Anurag Kumar1
1Dr. Rajendra Prasad Centre for Ophthalmic Sciences, All India Institute of Medical Sciences, Ansari Nagar, New Delhi, India.
Eye (London, England)
|July 4, 2026
Summary
This study shows that modified trabeculectomy with a subscleral tube effectively lowers intraocular pressure (IOP) in refractory glaucoma patients. This surgical technique offers a safe and low-cost option for vision preservation.
Area of Science:
- Ophthalmology
- Surgical Innovation
- Glaucoma Research
Background:
- Refractory glaucoma presents a significant challenge in intraocular pressure (IOP) management.
- Traditional glaucoma surgeries may have limitations in efficacy and complication rates.
Purpose of the Study:
- To assess the safety and effectiveness of a modified trabeculectomy technique.
- This modification involves a subscleral polytetrafluoroethylene (Teflon) tube for posterior aqueous humor diversion.
Main Methods:
- A prospective pilot study included 43 eyes with refractory glaucoma.
- Fornix-based trabeculectomy with a 26-gauge IV cannula (tube) was performed to create a posterior outflow pathway.
- Outcomes measured included IOP, medication use, bleb morphology, and complications over 12 months.
Main Results:
- Mean IOP reduced from 41.4 mmHg to 14.6 mmHg (p < 0.001) at 12 months.
- Overall success rate was 97% (43% absolute, 54% qualified).
- Early hypotony (77%) resolved within 2 weeks; various bleb morphologies were observed, with flat blebs showing comparable IOP control.
Conclusions:
- Trabeculectomy with subscleral tube placement is an effective and low-cost surgical option for refractory glaucoma.
- The procedure demonstrates significant IOP reduction while preserving patient vision.
Related Concept Videos
01:28Tracheostomy: Procedure and Tubes
A tracheostomy is a surgical procedure that creates an artificial opening into the trachea, typically at the second or third cartilaginous ring level. This opening allows the insertion of a tracheostomy tube, which can replace an endotracheal tube, provide mechanical ventilation, bypass an upper airway obstruction, or remove accumulated tracheobronchial secretions.
Tracheostomy tubes can be made of semiflexible plastic (polyurethane or silicone), rigid plastic, or metal, and they come in...
Tracheostomy tubes can be made of semiflexible plastic (polyurethane or silicone), rigid plastic, or metal, and they come in...
01:16Oxygen Delivering System II: Venturi Mask and Transtracheal Oxygen
Oxygen therapy is a pivotal aspect of medical care, particularly for patients with respiratory ailments. Two prominent oxygen-delivering systems include the Venturi mask and the transtracheal oxygen catheter.
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,...
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,...