Original scientific paper
The Role of Frequency-Doubled Nd:Yag Laser (532 Nm) in the Treatment of Diabetic Macular Edema
Kajo Bućan
Milan Ivanišević
Ljubo Znaor
Lovro Bojić
Ksenija Karaman
Davor Galetović
Abstract
The aim of the study was to compare various laser wavelengths for photocoagulation treatment in clinically significant (focal) macular edema (CSME) in diabetics. Two different laser wavelengths (frequency-doubled Nd:YAG-532 nm vs. argon green-514 nm) were used to treat 54 eyes (28 eyes were treated with double frequency Nd:YAG laser and 26 eyes were treated with argon-green laser) of 35 patients with diabetes mellitus type 2. The mean follow up was 6 months. Therapeutic effect was evaluated by repeat visual acuity testing, color fundus photography and fundus fluorescein angiography. Reduction/elimination of CSME was observed in 73% (n=19) of frequency-doubled Nd:YAG-treated eyes and 75% (n=21) of argon-treated eyes. These results indicate that frequency-doubled Nd:YAG laser (532 nm) is equivalent to argon-green (514 nm) laser in the treatment of CSME. Frequency-doubled Nd:YAG laser (532 nm) therapy is effective in the treatment of CSME in diabetics and has a number of advantages (less scattering and less absorption by macular xanthophyll, ergonomic, high optical efficiency, long operating life-time, etc.).
Keywords
Diabetic Macular Edema; Laser Coagulation; Treatment Outcome; Comparative Study
Hrčak ID:
14364
URI
Publication date:
2.4.2007.
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