Argon laser iridotomy in angle-closure glaucoma: a comparison of two methods

Area of Science:

• Ophthalmology
• Laser Surgery

Background:

• Angle-closure glaucoma is a condition requiring prompt treatment.
• Peripheral iridectomy is a conventional surgical approach.
• Laser iridotomy offers a less invasive alternative.

Purpose of the Study:

• To compare two argon laser iridotomy techniques for angle-closure glaucoma.
• To evaluate the efficacy and safety of short-burn versus long-burn methods.
• To assess intraocular pressure (IOP) changes and complications.

Main Methods:

• Argon laser iridotomy performed on 141 eyes using Abraham contact lens.
• Two methods: Method I (long-burn, 0.2s) and Method II (short-burn, 0.02s).
• Both methods involved two-step iris burns; IOP and complications were monitored.

Main Results:

• Iris perforation achieved in 91% (long-burn) and 100% (short-burn) in one session.
• Transient IOP elevation occurred but resolved within 24 hours.
• Short-burn technique resulted in less corneal clouding, allowing peripheral iridotomy.

Conclusions:

• The short-burn argon laser iridotomy technique is safe and highly efficient for angle-closure glaucoma.
• It demonstrates superior outcomes compared to the long-burn technique and conventional peripheral iridectomy.
• Minimal complications and effective IOP management support its clinical utility.