Abstract: Phakic intraocular lens (implantable collamer lens, ICL) implantation is suitable for patients who are not ideal candidates for corneal refractive surgery, such as those with thin corneas or extreme myopia. Although ICL implantation is generally safe and effective, individual differences in postoperative corrective outcomes exist. Key factors influencing the surgical outcomes of ICL include: (1) Patient-related factors, such as ocular anatomical parameters (e.g., anterior chamber depth, corneal endothelial cell density, pupil diameter), refractive status (particularly the personalized correction of extreme myopia and astigmatism), systemic and other ocular diseases, patient age, and accommodative function; (2) Surgical factors, including ICL power calculation and selection (e.g., characteristics of V4c and V5 ICLs and the evolution of calculation formulas), surgical techniques (e.g., micro-incision design), and postoperative management (e.g., use of corticosteroids, vault monitoring, and ICL position stability). With the application of new designs such as the V5 ICL, the development of artificial intelligence-assisted calculation models, and the refinement of surgical techniques, the precision and safety of ICL implantation have significantly improved. Preoperative accurate evaluation, personalized treatment planning, and standardized postoperative follow-up are crucial for optimizing visual outcomes.

Key words: Phakic intraocular lens, Refractive surgery, Corrective effect, Influencing factors