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  • Title: Comparison of argon laser iridotomy and sequential argon laser and Nd:YAG laser iridotomy in dark irides.
    Author: Lim L, Seah SK, Lim AS.
    Journal: Ophthalmic Surg Lasers; 1996 Apr; 27(4):285-8. PubMed ID: 8705743.
    Abstract:
    BACKGROUND AND OBJECTIVE: A prospective study was performed to compare argon laser iridotomy and sequential argon laser and Nd:YAG laser iridotomy in dark irides. PATIENTS AND METHODS: Twenty-four eyes of 17 patients underwent laser iridotomies; 13 underwent argon laser iridotomies and 11 underwent sequential argon laser and Nd:YAG laser iridotomies. The argon laser settings were standardized at 1.2 W, 50-mum spot size, and 0.1-second duration. The Nd:YAG laser was set at 2.5 mJ and single-pulse shots were used. RESULTS: All of the iridotomies were patent at the end of one treatment session. The mean total energy used for argon laser iridotomy was 8.28 J. For sequential iridotomy, 3.12 J was used for the argon laser stage and 7.5 mJ for the Nd:YAG laser stage. CONCLUSION: The total argon laser energy used can be reduced by 2.65 times by using the sequential laser iridotomy technique.
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