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To analyze the factors related to corrected distance vision acuity (CDVA) after implantable collamer lens (ICL) implantation in patients with preoperative suboptimal CDVA. 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. 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  &lt; 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  &gt; 0.05). For eyes with full correction, the postoperative LogMAR CDVA = 0.575 * preoperative LogMAR CDVA − 0.061 ( p  &lt; 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  &lt; 0.001,  R2  = 0.55). 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.

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