Long-term outcomes of phakic intraocular lens implantation in high myopia

Refractive anomalies are among the leading ocular conditions affecting the working-age population. One of them — high myopia — can cause severe and irreversible ocular changes, resulting in significant visual impairment or loss. Purpose. This study evaluated changes in vault height of phakic intraocular lenses (PIOL) and intraocular pressure (IOP) following the implantation of the ICL V5 (VICM5) lens in patients with high myopia. Material and method. The study included 60 patients. They were monitored for at least 24 months. Observation included measurement of clinical refraction, uncorrected visual acuity (UCVA), IOP, and the distance between the posterior surface of the optical part of the lens and the anterior surface of the crystalline lens (vault). Results. All surgeries were completed without complications. The safety and efficacy indices were 1.43 and 1.34, respectively. In 97 eyes (86%) with high myopia UCVA was equal to or better than preoperative values. The mean preoperative spherical equivalent was —10.59±3.4 D, which improved postoperatively to -0.5±0.75 D. Subsequently, the spherical equivalent remained within ±0.5 D in 89% of patients. The mean postoperative IOP was 15.86±3.30 mm Hg over the course of the 24-month follow-up. One month post-implantation, the vault height of the spherical lens ICL was 469.3±134.4 µm and 432.6±124.5 µm after 24 months (p<0.001). Conclusion. Implantation of the Visian ICL V5 lens is a safe and effective alternative refractive surgery method for the correction of high myopia.

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