Refractive Outcomes of Implantable Collamer Lens Implantation in 1212 Eyes with Suboptimal Corrected Distance Vision Acuity

Abstract

Purpose

To analyze the factors related to corrected distance vision acuity (CDVA) after implantable collamer lens (ICL) implantation in patients with preoperative suboptimal CDVA.

Methods

This retrospective study included patients with suboptimal preoperative CDVA (CDVA ≤ 20/25) who underwent ICL implantation (V4 or V4c). Preoperative and postoperative clinical evaluations included CDVA, uncorrected distance visual acuity (UDVA), and refraction.

Results

A total of 1212 eyes from 731 patients were identified. CDVA increased in 90.8% of the eyes after surgery. Among them, 57.5% of the eyes (697 eyes) gained more than one line. The preoperative LogMAR CDVA was 0.32 ± 0.23, which significantly improved to 0.13 ± 0.17 postoperatively (p < 0.001). There was no significant difference between ICL V4c and ICL V4 in the LogMAR UDVA, sphere, cylinder, SE, LogMAR CDVA, efficacy index, and safety index after surgery (p > 0.05). For eyes with full correction, the postoperative LogMAR CDVA = 0.575 * preoperative LogMAR CDVA − 0.061 (p < 0.001, R² = 0.53). For eyes with partial correction, the postoperative LogMAR CDVA = 0.536 * preoperative LogMAR CDVA − 0.007 * SE - 0.196 (p < 0.001, R² = 0.55).

Conclusions

ICL implantation can improve CDVA in eyes with suboptimal CDVA. This study provides the postoperative outcomes of eyes with different preoperative CDVA, which makes it convenient for surgeons to communicate with such patients before surgery.

Keywords:

• Implantable collamer lens (ICL)
• CDVA
• myopia
• ICL V4c
• ICL V4

Acknowledgments

The authors thank Jing Hu for helping in statistics analysis.

Disclosure statement

No potential conflict of interest was reported by the author(s).

Data availability statement

The data that support the findings of this study are available from the corresponding author Xingtao Zhou upon reasonable request.

Additional information

Funding

Supported in part by the National Natural Science Foundation of China for Young Scholars [Grant No. 82000929], the Shanghai Sailing Program [Grant No. 20YF1405000], National Natural Science Foundation of China [Grant No. 81770955], Project of Shanghai Science and Technology [Grant No.20410710100], Clinical Research Plan of SHDC [SHDC2020CR1043B], Project of Shanghai Xuhui District Science and Technology [2020-015], Project of Shanghai Xuhui District Science and Technology [XHLHGG202104], Shanghai Engineering Research Center of Laser and Autostereoscopic 3 D for Vision Care [20DZ2255000], Construction of a 3D digital intelligent prevention and control platform for the whole life cycle of highly myopic patients in the Yangtze River Delta [21002411600].