Visual Performance of a Small-Aperture Intraocular Lens: First Comparison of Results After Contralateral and...

To evaluate visual performance in patients implanted contralaterally and bilaterally with the small-aperture hydrophobic acrylic intraocular lens (IOL) (IC-8 IOL; AcuFocus, Irvine, CA).

In this prospective, non-randomized, non-comparative study, 10 contralateral patients were implanted with a monofocal IOL in one eye and an IC-8 IOL in the other. There were 10 bilateral patients implanted with an IC-8 IOL in both eyes. All patients were observed for at least 12 months after the study device was implanted in each eye. Visual acuity, patient satisfaction, ease of task performance, visual symptoms, defocus curves, and contrast sensitivity comparisons are presented.

For bilateral and contralateral patients, the mean uncorrected and corrected distance binocular acuities were 20/25 or better at all distances. All 10 (100%) contralateral and 10 (100%) bilateral patients achieved 20/32 or better binocular uncorrected and corrected distance visual acuity at all distances. The improvement in binocular uncorrected intermediate and uncorrected near visual acuity was 0.5 to 1 line greater in bilateral patients. Bilateral implantation extended the depth focus range by 0.25 diopters. The mean log contrast sensitivity was similar in both groups for mesopic without glare and with glare conditions at all spatial frequencies (P > .05). Bilateral patients had better overall satisfaction, satisfaction with near tasks, and spectacle independence and they rated many near tasks as easier to perform.

Results demonstrate that both contralateral and bilateral implantation of an IC-8 IOL provide excellent visual acuity across all distances. Bilateral implantation can be successful based on careful patient selection and optimization of refractive targets. [J Refract Surg. 2020;36(1):12-19.].