The Small-Aperture IC-8 Intraocular Lens: A New Concept for Added Depth of Focus in Cataract Patients.

Purpose: To evaluate visual performance of subjects implanted monocularly with a small-aperture hydrophobic intraocular lens (IC-8 IOL).

Design: A prospective, noncomparative, multicenter case series.

Methods: A series of 12 patients, presenting for cataract surgery, were implanted monocularly with a single-piece hydrophobic acrylic intraocular with a centrally located opaque annular mask measuring 3.23 mm in total diameter with a 1.36 mm central aperture. Uncorrected distance, intermediate, and near visual acuities (UDVA, UIVA, and UNVA); depth of focus; and subjective symptoms were evaluated for 12 months after implantation. Mean ± standard deviation visual acuity is reported in logMAR.

Results: The mean monocular UDVA, UIVA, and UNVA improved significantly from 0.42 ± 0.18, 0.52 ± 0.22 and 0.66 ± 0.23 preoperatively to 0.06 ± 0.08 (P < .0001), 0.07 ± 0.11 (P < .0001), and 0.11 ± 0.15 (P < .0001) at 1 month, respectively, and remained stable until 12 months. At 12 months, 100%, 100%, and 92% of patients achieved 20/32 or better binocularly for UDVA, UIVA, and UNVA, respectively. One hundred percent of eyes maintained 20/40 or better visual acuity over a range of +0.50 diopter to -1.50 diopters of defocus. Subjects implanted with the IC-8 IOL perceived a small magnitude of visual symptoms and rated their symptoms on the lower end of the severity scale.

Conclusion: Early results demonstrate that monocular IC-8 intraocular lens implantation provides a continuous, broad range of vision and excellent acuity across all focal distances.