Laser in situ keratomileusis retreatment for regression using a scanningª²spot excimer laser system

    MI Shengª²Jian, JIA Li, LI Jinª²Ke, LI Min, ZHANG Yuª²Ping

    Department of Ophthalmology, Shannxi Corp Hospital, Chinese People¬ðs Armed Police Force, Xi¬ðan 710054, China

    ¡¾Abstract¡¿ AIM: To evaluate the effectiveness and safety of laser in situ keratomileusis for residual myopia and astigmatism using a scanningª²spot laser. METHODS: Ninetyª²three myopia eyes (from 75 patients) underwent secondary LASIK at (7.18¡À3.56) months after primary LASIK procedure and following up was over 6 months. The statistical analysis of the data was made by the paired test. RESULTS: After the reteatment, the average uncorrected visual acuity (UCVA) improved significantly (P<0.01) but compared with the best corrected visual acuity (BCVA) after primary LASIK, the UCVA after secondary LASIK had no significant difference (P>0.05). At 6 months, the residual refractive error within ¡À0.5D were 96.8% (90 eyes). Compared with the preoperative BCVA, 21.5% (20 eyes) had better postoperative UCVA and no severe complications were observed. CONCLUSION: Secondary LASIK, using a scanningª²spot excimer laser system, is an effective and safe method to treat regression after primary LASIK. ......