ESCRS - FP13.11 - Low Toric Power (T2) Iol`S – Is It Worth The Extra Effort?

Low Toric Power (T2) Iol`S – Is It Worth The Extra Effort?

Published 2025 - 43rd Congress of the ESCRS

Reference: FP13.11 | Type: Free paper | DOI: 10.82333/6rx3-1880

Authors: Yiwen Fan* 1 , Xiaojun Hu 1 , Xingtao Zhou 1 , Meiyan Li 1

1Department of Ophthalmology and Optometry,Fudan University Eye Ear Nose and Throat Hospital,Shanghai,China

Purpose

To evaluate the visual and refractive outcomes of the Alcon Clareon® T2 (low cylinder power) IOL relative to the Clareon® non-toric IOL. The T2 toric IOL has a 1.00 D cylinder at the IOL plane, corresponding to a nominal 0.65 D at the corneal plane.

Setting

Single ophthalmology clinic.

Methods

Patients presenting for routine cataract surgery in one or both eyes, where at least one eye qualified for implantation of the T2 lens, were enrolled. All qualifying eyes were randomized to a T2 lens or a non-toric lens. Enrollment was planned for 30 T2 eyes and 20 non-toric eyes.

Subjects were evaluated 3 months postoperative. Testing included monocular uncorrected and corrected distance visual acuity, and manifest refraction. Low contrast (10%) visual acuity was tested under photopic and mesopic conditions, with and without glare. The sine wave contrast sensitivity was also tested under photopic and mesopic conditions (without glare). These latter two tests were conducted with the distance correction in place.

Results

50 eyes of 43 subjects were included showing no demographic differences between groups.

 

  • Postoperatively, residual refractive cylinder was statistically significantly lower in the T2 group (0.22 ± 0.22 vs. 0.59 ± 0.28, p < 0.01).
  • The T2 group also had uncorrected logMAR distance visual acuity nearly one line better than the non-toric group, (0.00 ± 0.08 vs. 0.09 ± 0.13). This difference was also statistically significant (p < 0.01).

 

Low contrast acuity was not statistically significantly different in either mesopic or photopic conditions, with or without glare (p = 0.49). Photopic and mesopic contrast sensitivity were also not statistically significantly different between the two lens types (p = 0.71 and p = 0.63, respectively).

Conclusions

The data show that use of the low cylinder power lens provided significantly better uncorrected visual acuity and significantly lower refractive cylinder. This is in line with similar studies of low cylinder power toric IOL for presbyopia correction.

We observed no significant differences in contrast sensitivity or low contrast acuity between the study groups