Abstract: 【Abstract】 Objective To evaluate the efficacy, safety and stability of the implantation of posterior chamber phakic intraocular lens for high myopia. Design Retrospective case series. Participants Seventy three eyes of 38 cases with high myopia (-6.00～-24.00 D) who were implanted with posterior chamber phakic intraocular lens in 211 Hospital of the People's Liberation Army, Haerbin from July 2009 to March 2012. Methods The patients were implanted with posterior chamber phakic intraocular lens, 48 eyes with implantable contact lens-myopia (ICM) and and 25 eyes with Toric implantable contact lens (TICL). The follow-up was 6 months. Main Outcome Measures Visual acuity, refraction, inraocular pressure (IOP), cornea, and space between crystals. Results The uncorrected visual acuity (UCVA) after surgery varied from 0.15 to 1.0, and was found in 40 eyes ≥0.8 (54.79%). The UCVA of 72 eyes (98.63%) after surgery was better than the best corrected visual acuity (BCVA) before surgery. The post-operation UCVA exceeded pre-operation BCVA one row on visual chart in 33 eyes (45.21%), two rows in 13 eyes (17.81%) and three rows in 8 eyes (10.96%). The post- operation spherical refractive error was within ±1.00 D of expected diopters in 54 eyes (73.97%), within ±0.50D in 12 eyes (16.44%). The post-operation cylindrical refractive error was within ±0.50 D of expected diopters in 19 eyes (76%). The post- operation IOP was not significantly different from pre-operation IOP (P=0.197). A transient IOP elevation was found in seven patients (10 eyes) within two hours after surgery. There were 6 eyes (8.22%) had halo at night. There was no axial deviation of TICL and cataractogenesis in any patients. Conclusion Posterior chamber phakic intraocular lens implantation can significantly improve visual acuity in high myopia. It is an effective, safe and reliable method for correction of high myopia with a wide range of suitable diopters. (Ophthalmol CHN, 2012, 21: 390-394)

Key words:  high myopia/surgery, posterior chamber phakic intraocuIar lens