advertisement
Abstract #3666 Published in IGR 4-2
Theoretical and physical aspects of excimer laser trabeculotomy (ELT) ab interno with the AIDA laser operating at a wavelength of 308 nm
Walker R; Specht HBiomedizinische Technik 2002; 47: 106-110
Ablation of tissue structures containing and surrounded by water differs from tissue ablation at the surface, not only theoretically, but also in terms of outcome. In contrast to the situation often observed with surface ablation, it is shown that the trabecular meshwork in the anterior chamber of the eye can be ablated cleanly and accurately with the 308-nm excimer laser, without causing collateral thermal damage. The reason for this is that, in the trabecular meshwork, the ratio of radiation-absorbing tissue to water - which absorbs very little energy - is very small. Thus, a marked cooling effect results, which permits the development of only a very small amount of collateral thermal damage at the boundaries of the ablation zone. LA: German
Dr. H. Specht, Universitäts-Augenklinik, Im Neuenheimer Feld 400, D-69120 Heidelberg, Germany
Classification:
12.8.4 Using laser (Part of: 12 Surgical treatment > 12.8 Filtering surgery)
