Small aperture IC-8 intraocular lens in cataract patients: achieving extended depth of focus through small aperture optics

Abstract

Background To investigate visual outcomes following cataract surgery in patients who were implanted monocularly with an extended range of focus IC-8 IOL. Methods A multicentre, non-randomised, retrospective case series of 126 consecutive patients implanted with the IC-8 IOL. Data were collected and pooled from six centres across Australia. Uncorrected distance visual acuity (UDVA), uncorrected intermediate visual acuity (UIVA) at 80 cm and uncorrected near visual acuity (UNVA) at 40 cm were measured in eyes implanted with the IC-8 IOL. Adverse events, spectacle independence, visual symptoms and patient satisfaction were assessed at final follow-up. Results Over 90% of the patients without pre-existing ocular pathology (n = 109) achieved UDVA, UIVA and UNVA of 6/ 12 or better in the IC-8 eye. Binocularly, in this group, 98% achieved UDVA of 6/9, 94% UIVA of 6/12 and 91% UNVA of 6/12 or better. By final follow-up, over 50% of patients reported complete spectacle independence for distance, intermediate and near visual activity, with the remainder only using spectacles for specific tasks such as near-vision hobbies and reading in dim light. Conclusions The IC-8 IOL is capable of providing extended depth of focus following cataract surgery. It allows complete spectacle independence in more than half of the patients implanted with the IC-8 IOL.

Functional Outcomes and Reading Performance After Combined Implantation of a Small-Aperture Lens and a Segmental Refractive Bifocal Lens

“…Previous studies assessing the clinical performance of the IC-8 IOL were also in accordance with our results. 13,17,18 Dick et al 19 found monocular uncorrected UDVA (4 m), UIVA (67 cm), and UNVA (40 cm) values of 0.06 ± 0.15, 0.08 ± 0.12, and 0.18 ± 0.14 logMAR, respectively (105 patients, 6-month follow-up). When combined with an aspheric monofocal IOL, the binocular distance-corrected defocus curve revealed a visual acuity of 0.20 logMAR or better ranging from +1.00 to -2.00 D.…”

The Effect of Spectacle-Induced Low Myopia in the Non-Dominant Eye on the Binocular Defocus Curve with a Non-Diffractive Extended Vision Intraocular Lens

“…An alternative, non-diffractive, option for extending the depth of focus of an IOL is using a small aperture, such as is incorporated into the IC-8 IOL (Acufocus, Inc., Irvine, CA). 10 This provides a similar effect to “stopping down” a camera. The IC-8 IOL achieves the objective of an extended depth of focus, but at the expense of limiting the light entering the eye.…”

Implantation einer „small-aperture Intraokularlinse (IOL)“ bei 2 Patientinnen mit irregulärem Astigmatismus nach keratorefraktiver Chirurgie

“…CA, USA) IOL einen Astigma-tismus von bis zu 1,5 dpt kompensieren kann[6]. Shajari et al zeigten, dass diese IOL einen hohen Sicherheitsindex und eine hohe Zufriedenheitsrate hat und bei irregulärem Hornhautastigmatismus zu einer besseren Sehqualität führen kann…”