Related Experiment Video
Updated: Jan 20, 2026

Ultrasound Cyclo Plasty in Eyes with Glaucoma
Published on: January 26, 2018
Ex-PRESS implantation for different types of glaucoma
Meltem Guzin Altinel1, Ayse Yagmur Kanra2, Remzi Karadag3
1Department of Ophthalmology, Fatih Sultan Mehmet Training and Research Hospital, Icerenkoy Atasehir 34752, Istanbul, Turkey.
The Ex-PRESS P200 glaucoma shunt effectively lowers intraocular pressure (IOP) and reduces medication needs in medically uncontrolled glaucoma patients. This surgical option offers significant IOP reduction and improved outcomes for difficult-to-manage glaucoma.
Area of Science:
- Ophthalmology
- Glaucoma Surgery
- Medical Devices
Background:
- Medically uncontrolled glaucoma presents a significant challenge in maintaining ocular health.
- The Ex-PRESS P200 glaucoma shunt is a device designed to manage intraocular pressure (IOP).
Purpose of the Study:
- To evaluate the clinical outcomes, efficacy, and safety of the Ex-PRESS P200 glaucoma shunt.
- To assess the device's performance in patients with various types of medically uncontrolled glaucoma.
Main Methods:
- Retrospective analysis of 31 eyes with medically uncontrolled glaucoma treated with Ex-PRESS P200 shunt implantation.
- Evaluation of preoperative and postoperative intraocular pressure (IOP), medication use, and complications.
Main Results:
- Significant reduction in mean IOP from 28.7±10.3 mm Hg to 15.3±5.2 mm Hg (39.9% decrease).
- Average number of antiglaucomatous drugs reduced from 3.9 to 1.7 postoperatively.
- Complete success rate of 32.3% and qualified success rate of 77.5% observed.
Conclusions:
- Ex-PRESS P200 glaucoma shunt implantation is an effective surgical option for medically uncontrolled glaucoma.
- The procedure leads to significant IOP reduction and decreased reliance on antiglaucomatous medications.
Related Concept Videos
Glaucoma: Overview
Open Angle Glaucoma: Treatment
Drugs such as carbonic anhydrase inhibitors, α2- and...
Angle Closure Glaucoma: Treatment
Types of RNA
Three main types of RNA are involved in protein synthesis: messenger RNA (mRNA), transfer RNA (tRNA), and ribosomal RNA (rRNA). These RNAs perform diverse functions and can be broadly classified as protein-coding or non-coding RNA. Non-coding RNAs play important roles in the regulation of gene expression in response to developmental and environmental changes. Non-coding RNAs in prokaryotes can be manipulated to develop more effective antibacterial drugs for human or animal use.
RNA...
Types of Hormones
Types of Toxins
Air pollutants, primarily gases, pose significant threats to respiratory health, leading to conditions like hypoxia, lung cancer, and in extreme cases, death.
Environmental pollutants like...

