@article{Lu_Li_Qi_Zhang_2000, title={Excimer laser in situ keratomileusis for severe ametropia after penetrating keratoplasty}, volume={4}, url={https://hkjo.hk/index.php/hkjo/article/view/134}, abstractNote={<p><strong>Objective:</strong><strong> </strong>To evaluate the effects of laser <em>in</em><em> </em><em>situ</em><em> </em>keratomileusis in correcting severe myopia and astigmatism after penetrating keratoplasty.</p><p><strong>Methods: </strong>Laser <em>in situ </em>keratomileusis was performed to correct high ametropia in nine eyes of nine patients who had previously undergone penetrating keratoplasty.</p><p><strong>Results</strong>: After laser <em>in situ </em>keratomileusis, all grafts remained clear and no corneal graft rejection occurred during the follow-up period. The average spherical equivalent refraction decreased from -12.17 diopters preoperatively to -3.56 diopters postoperatively and the average cylinder from 6.39 diopters to 2.78 diopters. The highest cylinder correction attempt was 10.00 diopters. The uncorrected visual acuity and the best corrected visual acuity improved for all patients.</p><p><strong>Conclusion</strong>: Laser <em>in situ </em>keratomileusis is a safe and effective method for treating high ametropia after penetrating keratoplasty.</p>}, number={1}, journal={Hong Kong Journal of Ophthalmology}, author={Lu, Wen-xiu and Li, Zhi-hui and Qi, Ying and Zhang, Kui}, year={2000}, month={Dec.}, pages={21–24} }