Fig. 1. Light micrograph of a 193-nm, slit-like ablation in a bovine cornea. Dosage parameters: 20,000 pulses, 50 Hz, 125 mJ/cm2 per pulse, with a 10 νm mask (original magnification ×214). (Puliafito CA, Steinert RF, Deutsch TF, et al: Excimer laser ablation of the cornea and lens: Experimental studies. Ophthalmology 92:741, 1985)