To the Editor.
—The article by Nanevicz et al,1 in the December 1986 issue of the Archives, is of interest, as we also have an interest in the concept of using pulsed ultraviolet (UV) radiation for the removal of cataractous lenses.We agree with the authors that there are "significant challenges in developing an appropriate endocular delivery system and integrating this with an aspiration system to remove microscopic ablation fragments." Such a system is currently under investigation in our laboratories and is illustrated in Fig 1. The system consists of an optical fiber (which transmits the UV radiation) surrounded by an irrigation-aspiration sleeve. For our experiments, we coupled the output of an excimer laser operating at 308 nm with the optical fiber. This laser produced 17-ns pulses at a repetition rate of 1 to 100 Hz, with energy output of 0 to 230 mJ. Up to 20 mJ of
Bath PE, Mueller G, Apple DJ, Brems R. Excimer Laser Lens Ablation. Arch Ophthalmol. 1987;105(9):1164-1165. doi:10.1001/archopht.1987.01060090022006