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Excimer laser in situ keratomileusis for severe ametropia after penetrating keratoplasty rnrnLU Wenxiu, LI Zhihui, QI Ying, et al.Department of Ophthalmology, Beijing Tongren Hospital,Beijiing 100730, ChinaChin J Ophthalmol 2001; 37: 94-97.rnrnObjective To evaluate the effects of excimer laser in situ keratomileusis in correcting severe myopia and astigmatism after penetrating keratoplasty.Methods Excimer laser in situ keratomileusis was performed on ten eyes of ten patients to correct high ametropia in cases having previously undergone penetrating