Korean J Ophthalmol.  1989 Dec;3(2):47-54. 10.3341/kjo.1989.3.2.47.

The effect of combined application of argon and Nd-YAG lasers on iridectomy in rabbits

• Park C
• Rhee SW

• KMID: 1735043
• DOI: http://doi.org/10.3341/kjo.1989.3.2.47

Abstract

Recently iridectomy using an argon or Nd-YAG laser to treat narrow angle glaucoma has become popular, and is now the procedure of choice over the standard surgical technique. However, the shock wave of the Nd-YAG laser causes hemorrhage in almost all cases and the high energy level of the Nd-YAG laser, which is required for iridectomy, causes injury to the lens and cornea. Furthermore, there is a tendency toward closure of the iridectomy site after argon laser application. We performed iridectomies by a combined application of argon and Nd-YAG lasers in pigmented rabbits to improve iris bleeding, iridectomy patency, and lens and corneal damage. The iridectomy patency and the lens and corneal damage were examined with a scanning electron microscope. The rabbits that underwent laser iridectomies with only the Nd-YAG laser were used as a control group. Based on the results, it can be concluded that laser iridectomy by a combined application of argon and Nd-YAG lasers results in a lower rate of bleeding, a higher rate of patency, and less damage to the lens and cornea as compared with iridectomy performed by Nd-YAG laser only.

Keyword

combined application; Nd-YAG laser; laser iridectomy

MeSH Terms

Animals
Cornea/ultrastructure
Endothelium, Corneal/ultrastructure
Eye Hemorrhage/etiology
Iris/blood supply/*surgery/ultrastructure
*Laser Therapy/adverse effects
Lens, Crystalline/ultrastructure
Microscopy, Electron, Scanning
Rabbits
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