CompletedNot Applicable

Sequential Laser Iridotomy Using Argon and Q-Switched 532 nm Frequency Doubled Neodymium Yag Laser: A Pilot Study

Singapore10 participantsStarted 2006-11

Plain-language summary

Sequential Laser Iridotomy uses argon and Nd:yag laser in the first and second steps, respectively. Using q-switched 532 nm laser in the second step is hypothesized to be as good and effective as the conventional Nd:yag laser, because it selectively targets pigmented cells and delivers a short pulse duration of 3 nanoseconds, causing less thermal and collateral damage.

Who can participate

Age range22 Years

SexALL

See this in plain English?

AI-rewrites the medical criteria so a patient or caregiver can understand them. Always confirm with the trial site.

Inclusion Criteria: * More than 21 years old * Able to give informed consent * Diagnosis of either: chronic angle closure glaucoma (CACG), primary angle closure (PAC), primary angle closure suspect (PACS) or fellow eyes of acute angle closure glaucoma (AACG), and in need of a laser iridotomy Exclusion Criteria: * History of any prior laser treatment or intraocular surgery to the eye * History of any corneal disease * Any ocular infection/ inflammation within the last two months * Inability to give informed consent

What they're measuring

Visual Acuity

Intraocular pressure

Total power delivered by each laser modality

Iridotomy patency and size

Pain rating during the procedure

Anterior segment inflammation

Endothelial cell count

Cataract progression

Rate of complications

Trial details

NCT IDNCT00452998

SponsorNational University Hospital, Singapore

Sponsor typeOTHER

Study typeINTERVENTIONAL

Primary completion2007-12

View on ClinicalTrials.gov More Chronic Angle Closure Glaucoma trials