Visual performance results after tetraflex accommodating intraocular lens implantation

Purpose: To present the clinical results that demonstrate the efficacy of the Tetraflex accommodative intraocular lens (IOL) in providing both enhanced distance and near acuity. Design: Single-center prospective data collection performed in Manchester, United Kingdom. Participants: A series of 95 eyes of 59 patients implanted with the Tetraflex lens was performed by a single surgeon. Thirty-six of these cases were implanted bilaterally. Intervention: Implantation of the Tetraflex accommodative IOL. Main Outcome Measures: Prospective data collection included both uncorrected distance visual acuity (UCDVA) and uncorrected near visual acuity (UCNVA) testing, manifest refraction, best-corrected distance visual acuity (BCDVA), distance corrected near visual acuity (DCNVA), and the amplitude of accommodation. Intraoperative and postoperative complications also were reported. Results: At 6 months after surgery, 63% of all cases achieved a DCNVA of 20/40 or better. Virtually all of the patients had at least 1 diopter (D) of accommodative amplitude (98% at 1 month; 100% at 3 and 6 months); 75.7% had at least 2 D at 6 months after surgery. At 6 months or later, 92.2% had 20/40 or better UCDVA. The proportion of cases achieving a UCNVA of 20/40 or better remained relatively constant at 45% to 47%. At 6 months and later, 98.7% had a BCDVA of 20/40 or better. In the bilaterally implanted series, at 1 month after surgery, all patients had at least 1 D of accommodative ability; 96% had at least 2 D at 6 months. One hundred percent achieved a BCDVA, 89.3% achieved a DCNVA, and 74.1 % achieved a UCNVA of 20/40 or better at 6 months after surgery. Conclusions: The Tetraflex accommodating IOL provides enhanced near vision with good distance vision 6 months after surgery. Ophthalmology 2007;114:1679-1684 (c) 2007 by the American Academy of Ophthalmology.