Intraocular Lens Position Stability During Phacovitrectomy with Air or Gas Tamponade.

PURPOSE

To evaluate the stability of different intraocular lenses (IOLs) after phacovitrectomy with air or gas tamponade.

PATIENTS AND METHODS

This retrospective cross-sectional study included 28 patients who underwent phacovitrectomy with air or sulfur hexafluoride gas tamponade and postoperative anterior segment optical coherence tomography assessments. Patients who received any DIB00V (Johnson & Johnson Surgical Vision, Inc. Irvine, CA, USA), XY-1 (HOYA Surgical Optics Co. Chromos, Singapore), or NX70s (Santen Pharmaceutical Co. LTD, Osaka, Japan) IOL implantation were analyzed. The anterior chamber depth (ACD) and IOL position values at each measurement (100%, 50%, 0%) and between IOLs were compared. The IOL displacement force (mN) was measured with a verification experiment and recorded at each 0.1 mm anterior movement until anterior displacement reached 0.5 mm.

RESULTS

The average patient age was 66 (59-73) years. ACD values increased progressively as the postoperative gas decreased for all IOLs. Compared to the preoperative ACD, postoperative ACD was significantly greater at 50% and 0% gas for all IOLs. The DIB00V had significantly larger ACD values than the XY-1 at 100% gas or air (P = 0.023) and the NX70s at 0% gas or air (P = 0.008). The IOL position gradually shifted significantly posteriorly for all IOLs as the gas or air disappeared. No significant change was observed in the DIB00V and NX70s between the gas 50% and gas 0% conditions (DIB00VP = 0.019 with Bonferroni correction, NX70s; P = 0.148 with Bonferroni correction). The DIB00V were significantly more posterior than the XY-1at 100% (P = 0.046).

CONCLUSION

The DIB00V had greater IOL displacement force against push from the retinal surface compared to the XY-1 and NX70s and exhibited excellent z-axis stability in phacovitrectomy with air or gas tamponade.