Immediate Anterior Chamber Paracentesis With A 30-Gauge Needle for Acute Primary Angle - Closure

At presentation, patients received immediate anterior chamber paracentesis with a 30-gauge needle. The intraocular pressure (IOP) was recorded at immediately, 15 and 30 minutes, and then 1, 24 and 48 hours after paracentesis. The IOP was compared between before paracentesis and each time-point after paracentesis. All affected eyes received antiglaucomatous medications 60 minutes after ACP and underwent peripheral iridotomy within 24 hours.

All participants will receive oral acetazolamide (250 mg) 1 tablet at 1 hour after paracentesis to lower the intraocular pressure. After that, the dose of acetazolamide will be adjusted according to the level of intraocular pressure. If the eye pressure goes to normal (lower than 21 mmHg), acetazolamide will be discontinued.

All affected eyes underwent laser peripheral iridotomy within 24 hours after presentation. This procedure is a standard treatment for acute angle-closure. The fellow eyes will receive laser peripheral iridotomy in the same occasion or later to prevent acute angle-closure in the future.