NCT02474238

Comparing Nd:YAG Laser and Sequential Double Frequency YAG-Nd:YAG Laser Iridotomy

Randomized Clinical Trial Comparing Neodynium:Ytrium-aluminium-garnet (Nd:YAG) Laser and Sequential Double Frequency YAG-Nd:YAG Laser Iridotomy in Patients With Dark Iris

• Status: Completed
• Phase: N/A
• Study type: Interventional
• Enrollment: 82 (actual)
• Sponsor: Prince of Songkla University · Academic / Other
• Sex: All
• Age: 18 Years
• Healthy volunteers: Not accepted

Summary

No single type of laser or set of laser parameters is appropriate for all type of irides. Pure Nd:YAG laser iridotomy is very effective in the light color irides. It was considered as the gold standard for iridotomy. It, however, is less effective and causes some complication such as iris hemorrhage especially in patients with dark iris.

Detailed description

By using the double frequency YAG to make the initial bore and the Nd:YAG laser to complete the perforation, the technique should be able to effectively combine most of the advantages of both lasers whilst avoiding their disadvantages. It is possibly the ideal iridotomy technique to use in the Asian irides. The investigators aim to study the energy use for laser iridotomy comparing between the two techniques as well as objectively measure the variables associated with complications.

Conditions

• Angle Closure Glaucoma

Interventions

Type	Name	Description
DEVICE	The sequential technique	By using 'the double frequency YAG laser' to make the initial bore and 'the Nd:YAG laser' to complete the perforation on iris.
DEVICE	The pure Nd:YAG laser technique	By using 'the pure Nd:YAG laser' to make a complete perforation on iris.

Timeline

• Start date: 2015-05-01
• Primary completion: 2018-08-01
• Completion: 2018-08-01
• First posted: 2015-06-17
• Last updated: 2018-08-27

Locations

1 site across 1 country: Thailand