| Influence of Application Methods on Results of Contact Transscleral Nd:YAG Laser Cyclophotocoagulation. |
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Dae Hee Kim, Hong Seok Yang, Ho Min Lew, Jae Hong Ahn |
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Department of Ophthalmology, Ajou University School of Medicine, Suwon, Korea. chrisahn@ajou.ac.kr |
| 레이저 조사 방법이 Nd:YAG 레이저 경공막 모양체 광응고술의 결과에 미치는 영향 |
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김대희ㆍ양홍석ㆍ유호민ㆍ안재홍 |
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Department of Ophthalmology, Ajou University School of Medicine, Suwon, Korea |
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| Abstract |
PURPOSE
To examine the influence of irradiation methods on the long-term results of contact transscleral Nd:YAG laser cyclophotocoagulation and to evaluate the factors that affect changes in intraocular pressure (IOP) and occurrence of ocular hypotony after cyclophotocoagulation. METHODS: In this retrospective study, 36 refractory glaucomatous eyes of 36 patients were observed for at least one year after a cyclophotocoagulation procedure. Contact transscleral Nd:YAG laser cyclophotocoagulation was performed with 7 to 10 Watts of power, a duration of 0.7 seconds, with one or two rows, and ranges of either greater or less than 180 degrees. The change in IOP, the success rate of the procedure, and the occurrence rate of hypotony were analyzed with regard to the methods of cyclophotocoagulation. RESULTS: In this series of patients with refractory glaucoma, the final IOP and success rate were not significantly influenced by the laser application method or by the total energy used. The eyes with ocular hypotony showed significantly decreased IOP one year after cyclophotocoagulation when compared with eyes without ocular hypotony. The IOP percent reduction in the patients with ocular hypotony tended to decrease more rapidly than did that of the patients without hypotony, beginning three months after the operation. CONCLUSIONS: The application methods of cyclophotocoagulation appear to have no significant influence on success rate, IOP or ocular hypotony rate. The percent reduction in IOP was higher in the hypotony group, including during the early postoperative periods. |
| Key Words:
Cyclophotocoagulation;Ocular hypotony;Long-term result;Laser energy;Irradiation method |
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