We measured temperature elevation during Photorefractive Keratectomy (PRK) by thermal radiation. The thermal radiation from ablating surface of gelatin gel (15%wt) by ArF excimer laser was detected by a MCT (Mercury Cadmium Telluride) detector with 1 μs rise time. The measured signal increased sharply just after the laser pulse and decreased quasi-exponentially. We calculated the temperature elevation using Stefan-Boltzmann radiation law. The maximum temperature elevation was 97 °C at 208 mJ/cm2 in laser fluence. The temperature elevation over 60 °C was kept for 85 μs. These temperature elevation might induce possible heat damage on ablated surface. Our high temporal resolution temperature monitoring may be available to achieve safety and precise PRK.
|ジャーナル||Annual International Conference of the IEEE Engineering in Medicine and Biology - Proceedings|
|出版ステータス||Published - 1998 12月 1|
|イベント||Proceedings of the 1998 20th Annual International Conference of the IEEE Engineering in Medicine and Biology Society. Part 4 (of 6) - Hong Kong, China|
継続期間: 1998 10月 29 → 1998 11月 1
ASJC Scopus subject areas
- コンピュータ ビジョンおよびパターン認識