Purpose: To examine the efficacy, predictability and safety of posterior chamber phakic intraocular lens implantation in patients with moderate and high myopia. Methods: We analyzed the results of 93 eyes of 54 patients who were submitted to the implantation of a posterior chamber phakic lens for the correction of their myopia. The target postoperative spherical equivalent refraction was emmetropia. Mean follow-up was 9 months (ranging from 1 to 38 months) Results: The mean preoperative spherical equivalent refraction was -13.56 D (ranging from -5.75 to-20.38 D) and the mean postoperative spherical equivalent at the last visit was -0.92 D (ranging from -3.38 to +1.00 D) with 39 eyes (41.9%) within ± 0.50 D, 64 eyes (68.8%) within ±1.00 D of emmetropia and 88 eyes (94.6%) within ± 2.00 D. A gain of more than two lines of visual acuity was seen in 45.17% (42 eyes) at last examination. Complications occurred in 15 eyes (16.1%): loss of endothelial cells in 2 eyes (2.2%), pupillary block in 2 eyes (2.2%) and loss of crystalline lens transparency in 11 eyes (11.8%) which caused visual symptoms in 6 eyes (6.5%) only. Conclusion: Posterior chamber phakic lens is an effective, predictable and safe method for reducing or correcting moderate and high myopia. Gains in visual acuity were significant. Longer follow-up in a larger number of eyes will help to better address long-term stability of the results.
Intraocular lens implantation; Myopia; Ocular refraction
