Rotational stability of plate-haptic toric intraocular lenses implantation with a capsular tension ring: prospective randomized paired-eye study.

PURPOSE: To compare the rotational stability and visual outcomes of plate-haptic toric intraocular lenses (IOLs) with and without a capsular tension ring (CTR) in paired eyes.

SETTING

Eye and Ears, Nose, and Throat Hospital of Fudan University, Shanghai, China.

DESIGN

Prospective, randomized, paired-eye study.

METHODS

Patients with bilateral cataracts and coexisting regular corneal astigmatism were enrolled. The 2 eyes of each patient were randomly assigned to the CTR or non-CTR (NCTR) group. Both eyes of each patient were subjected to phacoemulsification and toric IOL implantation. CTRs were implanted into the eyes of the CTR group. All patients were followed up for 12 months; uncorrected distance visual acuity (UDVA), residual astigmatism (RAS), and rotational degree of the toric IOL were recorded.

RESULTS

186 eyes of 93 patients were eligible for analysis. At each visit, UDVA improved significantly postoperatively in all eyes ( P < .001). The mean rotational degree and RAS were significantly smaller in the CTR group at the 2-week visit ( P < .05). The toric IOLs achieved rotational stability at 1 week postoperatively in the CTR group while at 2 weeks postoperatively in the NCTR group. In the subgroup analyses, CTR coimplantation significantly reduced the 2-week IOL rotation in eyes meeting specific ocular measurements.

CONCLUSIONS

CTR coimplantation could increase the rotational stability of plate-haptic toric IOLs, by reducing the amount of IOL rotation in the early postoperative period and accelerating the stabilization of IOLs in the capsular bag.