Phakic posterior chamber intraocular lens implantation in high myopia with astigmatism

Abstract

Objective To valuate the efficacy, safety stability and predictability of implanting a posterior chamber phakic intraocular lens to correct high myopia with astigmatism. Methods Thirty-nine eyes of 22 patients with high myopia were treated with ICL implantation. The range of preop-erative myopia diopters was -7.0 D to -24.0 D, mean -14.50 D±3.50 D, astigmatism ranges -0.50 D to -4.50 D, mean 2.25±1.32 D. All of 39 eyes were implanted ICL successful and had been followed up for 3 to 18 months. The follow up examination included visual acuity, refraction tonometer, slit lamp examination, chamber depth, chamber angle and space between crystal lens and IOL. Results One week after operation, the uncorrected visual acuity of 38 eyes were same or better than the pre-operative best corrected visual acuity (BCVA). The refractive diopters were from -0.50 to -2.25 D,mean -0.75±0.38 D. Astigmatism was 0.25 to 2.75 D, mean 1.03±0.23 D. Complications were seen in 7 eyes of 6 patients who had increased intraocular pressure shortly after surgery (observed in 2hours after operation). After treatment, the intraocular pressure recovered to normal range within 24hours. No complications such as glaucoma, cataract, movement of IOL and retinal detachment occurred in any of the case. Conclusion ICL implantation is administered on the basis of preserving the natural lens. It is predictable, safe and effective in the selected correction methods in high myopia with astigmatism. Key words: High myopia; Intraocular lens; Phakic