Comparison Of Rotational Stability Of Two Aspheric Toric Intraocular Lenses (Iols): Final Results Of A Randomised Controlled Study
Published 2026 - 44th Congress of the ESCRS
Reference: FP05.15 | Type: Free paper | DOI: 10.82333/st8c-gk70
Authors: Mr Ashmal Jameel* 1 , Mr Vijay Wagh 1 , Mr Scott Robbie 1 , Mr Maninder Bhogal 1 , Ms Sancy Low 1 , Ms Elodie Azan 1 , Ms Seema Verma 1 , Ms Sophie Jones 2 , Prof. David O'Brart 1
1St Thomas' Hospital,London,United Kingdom, 2King's College Hospital,London,United Kingdom
Purpose
To evaluate the rotational stability of two monofocal toric intraocular lenses (IOLs), the Eyhance Toric II IOL and the Alcon IQ SN6ATX IOL using slit lamp photography image analysis.
Setting
University Hospital, Guy’s and St. Thomas NHS Foundation trust.
Methods
Patients with bilateral cataracts and corneal astigmatism of over 1.25 dioptres, and no significant ophthalmic problems were randomised to receive either bilateral insertion of Alcon SN6ATX or the Eyhance Toric II IOL with micro-monovision. Digital photography was performed on day of surgery and at 6 weeks and 6 months for one eye per patient. Toric IOL axis marker positions were measured against iris and scleral landmarks, for assessment of Toric IOL rotation. Initial insertion IOL position was compared with intended position. IOL position was compared with insertion position at 6 weeks after surgery. Photography was analysed by an independent third-party consultant, using AMO TECNIS Toric Lens Imaging Program© (Johnson & Johnson, USA).
Results
Thirty-seven patients randomised to the Alcon SN6ATX group (11M:26F, mean age 71.9 yrs), and thirty-nine patients to the Eyhance Toric II group (16M:23F, 66.98 yrs) have completed 6-week follow-up. Mean IOL rotation at 6 weeks, in the Alcon SN6ATX group was 0.86˚ (0.14-3.18; SD 0.62), and 0.85˚˚ (0.08-2.17; SD 0.60) in the Eyhance Toric group (p= 0.84). Mean IOL rotation at 6 months, in the Alcon SN6ATX group was 0.95˚˚ (0.07 – 2.64; SD 0.95), and 0.91˚˚ (0.11-2.04; SD 0.61) in the Eyhance Toric group (p= 0.84). Mean IOL rotation from 6 weeks to 6 months, in the Alcon SN6ATX group was 0.74˚˚ (0.00 – 2.09; SD 0.55), and 0.69˚˚ (0.03-2.93; SD 0.65) in the Eyhance Toric group (p= 0.55).
Conclusions
In both groups, toric IOL rotation at 6 weeks and 6 months was less than 1 degree from the original position, as measured on day of surgery. There was no statistically significant difference measured between the two groups. In summary, there were acceptable levels of Toric IOL rotational stability in both IOL groups, and non-inferiority of the Eyhance Toric II IOL when compared to the Alcon Toric IOL.