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  • Title: Clinical outcomes and rotational stability of a 4-haptic toric intraocular lens in myopic eyes.
    Author: Mencucci R, Favuzza E, Guerra F, Giacomelli G, Menchini U.
    Journal: J Cataract Refract Surg; 2014 Sep; 40(9):1479-87. PubMed ID: 25135540.
    Abstract:
    PURPOSE: To evaluate the refractive outcomes and rotational stability of a 4-haptic toric intraocular lens (IOL) in myopic eyes and the correlations between IOL rotation and refractive sphere, axial length (AL), and white-to-white (WTW) diameter. SETTING: Eye Clinic, Careggi Hospital, Florence, Italy. DESIGN: Prospective case series. METHODS: Phacoemulsification cataract extraction and implantation of an AT Torbi 709M IOL were performed. Corneal astigmatism was 1.50 diopters (D) or greater and the AL between 25.0 mm and 27.0 mm in all eyes. The uncorrected (UDVA) and corrected (CDVA) distance visual acuities, refraction, and IOL axis were evaluated preoperatively and postoperatively up to 6 months. RESULTS: The study enrolled 20 eyes (20 patients). The UDVA and CDVA improved significantly postoperatively (P<.001). The mean refractive spherical equivalent decreased significantly from -7.10 D±1.78 (SD) preoperatively to -0.55±0.25 D 1 day postoperatively (P<.001) and remained stable thereafter. Vector analysis showed that 90% and 85% of the eyes were within ±0.25 D for J0 and J45, respectively. At 3 months and 6 months, the mean IOL rotation was 2.66±1.53 degrees and 3.00±1.69 degrees, respectively (P<.001), with 95% of eyes and 90% of eyes, respectively, within ±5 degrees. A positive correlation was found between IOL rotation and preoperative sphere; none was found with AL and WTW. CONCLUSIONS: Implantation of the 4-haptic toric IOL in myopic eyes was effective and safe. The IOL showed no significant rotation over the 6-month follow-up. FINANCIAL DISCLOSURE: No author has a financial or proprietary interest in any material or method mentioned.
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