Sequential Laser Iridotomy Using Argon and Q-Switched 532 nm Frequency Doubled Neodymium Yag Laser: A Pilot Study
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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.
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Ages Eligible for Study:
22 Years and older (Adult, Senior)
Sexes Eligible for Study:
Accepts Healthy Volunteers:
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
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