Evaluation Of Implantable Collamer Lens (Icl) Sizing Accuracy Using Artemis Insight 100 Vhf Digital Ultrasound Biometry (Reinstein Formula) In Eyes With Hyperopia And Mixed-Cylinder.
Published 2025 - 43rd Congress of the ESCRS
Reference: PO744 | Type: Free paper | DOI: 10.82333/dvsy-xp23
Authors: Avinoam Shye* 1 , Aya Wattad 1 , Igor Kaiserman 2 , Gur Munzer 3 , Tzachi Sela 3 , Michael Mimouni 4 , Eyal Cohen 5
1Ophthalmology,Tel Aviv Sourasky Medical Center,Tel Aviv,Israel, 2Ophthalmology,Barzilai Medical Center,Ashkelon,Israel;Care-Vision Laser Center,Tel Aviv,Israel;Faculty of Health Sciences,Ben-Gurion University of the Negev,Beer Sheba,Israel, 3Care-Vision Laser Center,Tel Aviv,Israel, 4Ophthalmology,Rambam Health Care Campus,Haifa,Israel;Ruth and Bruce Rappaport Faculty of Medicine,Technion - Israel Institute of Technology,Haifa,Israel, 5Ophthalmology,Tel Aviv Sourasky Medical Center,Tel Aviv,Israel;Care-Vision Laser Center,Tel Aviv,Israel;Faculty of Medicine,Tel Aviv University,Tel Aviv,Israel
Purpose
To evaluate the accuracy of the Reinstein Formula (Version 3) in predicting vault lens separation of hyperopic and mixed cylinder Implantable Collamer Lenses (ICL) (STAAR Surgical).
Setting
London Vision Clinic, London, UK
Methods
This was a retrospective analysis of VICH and VTICH Visian ICL procedures performed between September 2017 and December 2024. ICLs were sized using version 3 of the Reinstein ICL Sizing Formula, derived from the following measurements: Ciliary body inner diameter, Sulcus-to-sulcus lens rise (Artemis Insight 100 very high-frequency (VHF) digital ultrasound, ArcScan Inc), Scotopic pupil diameter (MS-39, CSO Italia), and ICL maximum hyperopic lens sphere. The postoperative achieved vault at 1-month was measured using MS-39 AS OCT and compared to the target vault predicted by the formula.
Results
During the study period, 64 eyes of 32 consecutive patients were treated. One-month data was available for 100% of eyes. The mean maximum hyperopic lens sphere was +5.99 ± 2.26 (-3.00 to +9.50), and the mean lens cylinder was 2.36 ± 1.56 (0.00 to 6.00). The mean attempted vault was 615 µm ± 102 (400 µm to 989 µm). At 1-month, the mean achieved vault was 577 µm ± 200 (194 µm to 1197 µm), with an interquartile range of 220 µm. In an attempted versus achieved vault analysis, 42% of eyes were within ± 100 µm of predicted, 75% within ± 200 µm, and 92% within ± 300 µm. Additionally, 95.3% of eyes achieved a vault within the range of 200 µm to 1000 µm.
Conclusions
ICL sizing using version 3 of the Reinstein ICL Sizing Formula, based on VHF posterior chamber measurements, has proven to be a safe and effective tool for accurately predicting ICL vault separation in hyperopic eyes. The Reinstein Formula is available though: www.iclsizing.com.