Comparison Of Postoperative Axial Rotation Of Toric Intraocular Lenses With And Without Gas In Vitrectomy Combined Cataract Surgery

To compare the postoperative axial rotation of toric intraocular lenses (T-IOL) inserted for vitrectomy combined cataract surgery between with gas tamponade group and without gas tamponade group.

Department of Ophthalmology, Kanazawa Medical University, Kahoku-gun, Japan

Postoperative axial rotation was measured using intraoperative and postoperative anterior segment photographs for patients who had an AcrySof IQ toric (SN6AT3-6, Alcon) inserted for vitrectomy between September 2020 and June 2022 at our institution.

The study included 75 eyes from 75 patients with a mean age of 69.3 ± 10.0 years. Forty-six eyes were performed vitrectomy without gas tamponade, and 29 eyes were performed with gas tamponade. At 3 months postoperatively, the absolute value of axial rotation was 2.50 ± 2.13° in the gas(-) group versus 3.72 ± 4.06° in the gas(+) group, a significant difference (P<0.05). Axial rotation of more than 10° was observed in 0% of the gas(-) group and 10.3% of the gas(+) group. The subjective cylinder degrees improved significantly in both groups, from preoperative -1.22 ± 0.86 dioptors (D) to postoperative -0.37 ± 0.50 D in the gas(-) group (P<0.05) and from preoperative -1.38 ± 0.86 to postoperative -0.47 ± 0.56 D in the gas(+) group (P<0.05).

Postoperative axial rotation of T-IOL inserted during vitrectomy may be greater in the gas(+) group compared to the gas(-) group.