Authors

Yuexi Chen*, Qizhi Zhou**, #, Xiao Chen**, Aijun Pu**

Departments

*Aier College of Ophthalmology, Central South University, Changsha, PR China - **Department of Refractive Surgery, Chongqing Aier EYE Hospital, Chongqing, PR China

Abstract

Objective: To evaluate the long-term clinical outcome of posterior chamber intraocular lens implantation (ICL) for correcting myopia after excimer laser corneal refractive surgery.

Methods: This was a retrospective study. Eight eyes of five patients with myopia after excimer laser were selected for ICL implantation. Uncorrected visual acuity (UCVA), best corrected visual acuity (BCVA), spherical equivalents (SE), intraocular pressure (IOP), corneal endothelial count (CCD), central corneal thickness (CCT), axial length (AL), and vault and anterior chamber parameters were collected before and at 1 day, 1 month, 3 months, and at the last visit after ICL implantation. The mean follow-up period was 33 months±13 months (range, 1.5 to 4 years).

Result: Before the ICL, the mean UCVA was 0.95 ± 0.29, and the mean SE was -4.64D±2.51D (range, -2.13D to -8.75D). At last visit, the mean UCVA was significantly better than preoperative UCVA (t = 4.876, P<0.05), with 50% of eyes within 0.5 D/1.0 D of SE. The safety index was 0.92±0.30, and the effective index was 0.74 ± 0.39. The final follow-up was compared with preoperative: UCVA was increased, anterior chamber volume was reduced, and anterior chamber angle (ACA) was narrowed, the difference was statistically significant (t = 4.876, -5.808, 4.403, P<0.05). There were no significant changes in BCVA, AL, IOP, CCD, corneal Keratometry (K), CCT and anterior chamber depth (ACD) (t = -2.080, -2.460, -1.994, 0.184, 1.316, 0.831, -1.513, P>0.05). The mean vault at last visit was 615.25 µm±397.8 um (range, 200 µm to1220 µm). No serious complications were observed.

Conclusions: The safety and efficacy of ICL in the correction of myopia after excimer laser corneal refractive surgery are remarkable. However, its long-term stability needs further observation.

Keywords

ICL, excimer laser corneal refractive surgery, bi-optics, retreatment, enhancement surgery. under-correction, refractive regression.

DOI:

10.19193/0393-6384_2020_3_213