Skip to main page content
U.S. flag

An official website of the United States government

Dot gov

The .gov means it’s official.
Federal government websites often end in .gov or .mil. Before sharing sensitive information, make sure you’re on a federal government site.

Https

The site is secure.
The https:// ensures that you are connecting to the official website and that any information you provide is encrypted and transmitted securely.

Access keys NCBI Homepage MyNCBI Homepage Main Content Main Navigation
Clinical Trial
. 2024 Nov 28:18:3515-3525.
doi: 10.2147/OPTH.S494313. eCollection 2024.

One-Year Clinical Outcomes Following Aspheric Toric Monofocal IOL with a Double C-Loop Haptic Design Implantation

Robert Edward T Ang  1 , Pedro Tañá-Rivero  2 , Francisco Pastor-Pascual  3 , Pavel Stodulka  4   5 , Martin Slovak  4 , Manfred Tetz  6 , Isaak Fischinger  7 , Jorge Cazal  8 , Maria Gessa-Sorroche  9 , Marta Ibarz-Barberá  10 , Detlef Holland  11 , Thomas Groneberg  12
Affiliations
Clinical Trial

One-Year Clinical Outcomes Following Aspheric Toric Monofocal IOL with a Double C-Loop Haptic Design Implantation

Robert Edward T Ang et al. Clin Ophthalmol. .

Abstract

Purpose: This study aimed to evaluate one-year clinical outcomes in cataract patients with pre-existing corneal astigmatism implanted with a biconvex aspheric toric monofocal intraocular lens (IOL) with a double C-loop haptic-design.

Methods: One hundred and eighteen patients (236 eyes) with corneal astigmatism (≥0.75D) were implanted bilaterally with the PODEYE toric IOL and assessed up to 1-year after surgery. Postoperative evaluation included monocular and binocular uncorrected distance visual acuity (UDVA) and corrected distance visual acuity (CDVA), under both photopic and mesopic lighting conditions, refraction, photopic and mesopic contrast sensitivity (with and without glare), and rotational stability.

Results: At the last postoperative visit, 74.6% and 95.8% of eyes were within ±0.50D and ±1.00D of the target refraction, respectively. About 78.0% and 97.5% of eyes showed a postoperative refractive cylinder of ≤0.50D and ≤1.00D, respectively. The mean manifest spherical equivalent value was 0.16±0.40D, and the mean refractive cylinder value was -0.42±0.33D. 97.5% and 100% of patients had a binocular UDVA and CDVA of ≥20/32, respectively. The mean binocular UDVA and CDVA were 0.01±0.09 and -0.03±0.07 logMAR, respectively. Under mesopic conditions, 79.5% and 89.8% of patients showed a binocular UDVA and CDVA of ≥20/32, respectively. The mean binocular UDVA and CDVA were 0.15±0.11 and 0.10±0.10 logMAR, respectively. Binocular contrast sensitivity function both under photopic and mesopic conditions was good. The mean absolute IOL rotation was 2.52±2.59 degrees with 98.56% of eyes having a rotation of less than 10 degrees.

Conclusion: Bilateral implantation of an aspheric toric monofocal IOL with a double C-loop haptic design in cataract patients with corneal astigmatism provides good visual and refractive outcomes up to 1-year post-surgery.

Keywords: astigmatism; cataract; double C-loop; intraocular lens; monofocal toric.

PubMed Disclaimer

Conflict of interest statement

Robert Edward T. Ang declares grants for studies from Acevision, Inc., Acufocus, Inc., Bausch&Lomb, Inc.; Beaver-Visitec International, Glaukos Corp., Hoya, Ivantis, Inc., Johnson&Johnson Vision, Spyglass, STAAR Surgical and ViaLase. Pedro Tañá-Rivero declares grants for studies from Alcon Healthcare SA, AST Products Inc., BVI Inc., Carl Zeiss, Hoya Surgical AG, Humanoptics Holding AG, Johnson & Johnson Surgical Vision, Staar Surgical AG and ViaLase Inc. Francisco Pastor-Pascual declares grants for studies from Alcon Healthcare SA, BVI Inc., Carl Zeiss, Hoya Surgical AG and Humanoptics Holding AG. Pavel Stodulka declares grants for studies from Bausch and Lomb and Payment for the performance of the clinical investigation upon delivery of the clinical data from PhysIOL. Marta Ibarz-Barberá declares grants for studies from BVI Inc., Cutting-Edge, ELIOS Vision Inc., and Hoya Surgical AG. Detlef Holland reports study fee from physiol, outside the submitted work. The authors report no other conflicts of interest in this work.

Figures

Figure 1
Figure 1
Refraction outcomes: distribution of spherical equivalent prediction error (A) and refractive cylinder (B) at 4–6 and 11–13 months post-surgery.
Figure 2
Figure 2
Vector analysis with preoperative and postoperative data at 4–6 (A) and 11–13 (B) months post-surgery. Centroids with standard deviations are also shown.
Figure 3
Figure 3
Cumulative proportion of eyes (A and B)/patients (C and D) having a given photopic monocular and binocular logMAR uncorrected-distance visual acuity (UDVA) and best corrected-distance visual acuity (CDVA) value at 4–6 and 11–13 months post-surgery.
Figure 4
Figure 4
Cumulative proportion of eyes (A and B)/patients (C and D) having a given mesopic monocular and binocular logMAR uncorrected-distance visual acuity (UDVA) and best corrected-distance visual acuity (CDVA) value at 4–6 and 11–13 months post-surgery.
Figure 5
Figure 5
Mean photopic (n=115) and mesopic (n=118) binocular contrast sensitivity function with glare (B and D) and without glare (A and B) at 4–6 and 11–13 months post-surgery.
See this image and copyright information in PMC

References

    1. Day AC, Dhariwal M, Keith MS, et al. Distribution of preoperative and postoperative astigmatism in a large population of patients undergoing cataract surgery in the UK. Br J Ophthalmol. 2019;103:993–1000. doi:10.1136/bjophthalmol-2018-312025 - DOI - PMC - PubMed
    1. Villegas EA, Alcon E, Artal P. Minimum amount of astigmatism that should be corrected. J Cataract Refract Surg. 2014;40:13–19. doi:10.1016/j.jcrs.2013.09.010 - DOI - PubMed
    1. Kessel L, Andresen J, Tendal B, Erngaard D, Flesner P, Hjortdal J. Toric intraocular lenses in the correction of astigmatism during cataract surgery: a systematic review and meta-analysis. Ophthalmology. 2016;123(2):275–286. doi:10.1016/j.ophtha.2015.10.002 - DOI - PubMed
    1. Chassain C, Hallak MK, Lesaffre M. Rotational stability and clinical outcomes after implantation of a new monofocal toric intraocular lens with double C-loop design. J Fr Ophtalmol. 2023;46:571–580. doi:10.1016/j.jfo.2022.07.005 - DOI - PubMed
    1. Ang RET, Tañá-Rivero P, Pastor-Pascual F, Stodulka P, Tetz M, Fischinger I. Visual and refractive outcomes after bilateral implantation of a biconvex aspheric toric monofocal intraocular with a double C-loop haptic design. Clin Ophthalmol. 2023;17:2765–2776. doi:10.2147/OPTH.S432598 - DOI - PMC - PubMed

LinkOut - more resources