ROTATIONAL STABILITY OF TWO DIFFERENT PHAKIC TORIC INTRAOCULAR LENSES – INFLUENCE OF VAULTING
Published 2024 - 28th ESCRS Winter Meeting
Reference: MP24 | Type: Presented Poster & Poster | DOI: 10.82333/5rcp-p488
Authors: Suphi Taneri 1 , Deniz Kilic 2 , Anika Förster* 3 , H. Burkhard Dick 4
1Center for Refractive Surgery,Eye Center at St. Francis-Hospital, Muenster,Muenster,Germany;Ruhr-University Bochum,Bochum,Germany, 2Medipol Hospital,Izmir,Türkiye, 3Center for Refractive Surgery,Eye Center at St. Francis-Hospital, Muenster,Muenster,Germany, 4Ruhr-University Bochum,Bochum,Germany
Purpose
To compare clinical outcomes and rotational stability of toric implantable collamer lens (TICL) and toric implantable phakic contact lens (TIPCL).
Setting
Tertiary care center
Methods
Chart-review of all TICLs and TIPCLs implanted by a single surgeon (S.T.) since 2011. Implant sizing was according to manufacturer’s recommendation (mainly based on Scheimpflug white-to-white measurements), however, the last 15 TIPCLs were 0.25mm larger than recommended to increase vaulting.
Results
Eighty-four TICLs and 98 TIPCLs were identified and yielded excellent refractive and visual results in highly myopic-astigmatic eyes at the last follow-up. No case of pupillary block, acute glaucoma or cataract induction was observed. In total, 15 (8.2%) rotated lenses were recorded; 2 (2.4%) TICLs and 13 (13.3%) TIPCLs (p=0.013). Average TICL size was larger than TIPCL size (p<0.001). Rotation was positively correlated with Cyl and negatively with ACD but not with vaulting (p=0.001, r=0.253; p=0.011, r=-0.193; p=0.488, r=-0.057; respectively). Vaulting was positively correlated with preoperative ACD (p=<0.001, r=0.329). In eyes with a rotated TIPCL, preoperative Cyl was higher and ACD was shallower than in eyes with a stable TIPCL (p=0.001 and 0.007, respectively).
Conclusion
While both implants were safe and effective in highly myopic eyes, TICL rotated less frequently than TIPCL requiring fewer secondary interventions. No threshold for vaulting was found, which may be due to the higher vaulting of the IPCL than the ICL in an uncompressed state. No rotation of TIPCL occurred after increasing diameter. The manufacturer’s recommendation for TIPCL sizing were changed according to our results