Postoperative effective lens position and refraction changes with three different types of intraocular lens

To evaluate and compare alterations in the effective lens position (ELP) and refractive outcomes among three distinct intraocular lens (IOL) types.

Patients with cataracts were enrolled and allocated to 3 groups: Group A (implanted with the SN6CWS), Group B (implanted with the MI60), and Group C (implanted with the Aspira-aA). ELP measurements were obtained with swept-source optical coherence tomography (SS-OCT) at 1d, 1wk, 1mo, and 3mo postoperatively. Subjective refraction assessments were conducted at 1wk, 1mo, and 3mo following surgery.

The study included 189 eyes of 150 cataract patients (66 males). There were 77 eyes in Group A, 55 eyes in Group B, and 57 eyes in Group C. The root mean square of the ELP (ELP_RMS) within the initial 3mo was significantly lower for Group A than for Groups B and C. Refractive changes within Group A were not significant across the time points of 1wk, 1mo, and 3mo. Conversely, both Group B and Group C demonstrated statistically significant shifts toward hyperopia from 1wk to 3mo postsurgery.

Among the three IOLs examined, the SN6CWS IOL showes the greatest stability during the first 3mo postoperatively. Between 1wk and 3mo after surgery, notable hyperopic shifts are evident in eyes implanted with the MI60 and Aspira-aA IOLs, whereas refractive outcomes remain relatively constant in eyes implanted with SN6CWS IOLs.