Measurement And Analysis Of Intraocular Lens Tilt And Decentration In Short And Long Eyes
Published 2025 - 43rd Congress of the ESCRS
Reference: PP13.03 | Type: Free paper | DOI: 10.82333/5vke-d741
Authors: I-Hung Lin* 1 , Chen-Cheng Chao 2 , Chao-Kai Chang 3
1Taipei Nobel Eye Institute,Taipei,Taiwan, Province of China;Department of Ophthalmology,Taipei Medical University Hospital,Taipei,Taiwan, Province of China;Graduate institute of clinical medicine, College of Medicine,National Taiwan University,Taipei,Taiwan, Province of China;Department of Optometry,MacKay Junior College of Medicine, Nursing, and Management,Taipei,Taiwan, Province of China, 2Taipei Nobel Eye Institute,Taipei,Taiwan, Province of China;Graduate institute of clinical medicine, College of Medicine,National Taiwan University,Taipei,Taiwan, Province of China;Department of Optometry,MacKay Junior College of Medicine, Nursing, and Management,Taipei,Taiwan, Province of China, 3Taipei Nobel Eye Institute,Taipei,Taiwan, Province of China;Department of Optometry, Da-Yeh University,Chunghua,Taiwan, Province of China
Purpose
The aim of this study was to measure postoperative intraocular lens (IOL) tilt and decentration in eyes with short and long axial eye lengths and analyze their correlation with preoperative biometric parameters.
Setting
Department of Ophthalmology, Kepler University Clinic and Johannes Kepler University, Linz, Austria
Methods
This prospective study included patients scheduled for cataract surgery in both eyes with an axial eye length ≤22.75 mm or ≥25.50 mm. Measurements were performed preoperatively and at 1 hour, 1 week and 3 months postoperatively including optical biometry (IOLMaster 700, Carl Zeiss Meditec, Germany), high-definition swept-source OCT (CASIA II, Tomey, Japan; MS-39, CSO, Italy) and Scheimpflug imaging (Pentacam HR, Oculus, Germany). Additionally, autorefraction, subjective refraction and visual acuity were assessed at the last two follow-up visits.
Results
A total of 38 eyes from 38 patients (16 male, 22 female) were included in the study. A preliminary dataset is available. Mean age was 67.95 ± 10.41 years. Axial eye length was 21.86 ± 0.73 mm in short eyes and 26.52 ± 0.52 mm in long eyes. Anterior chamber depth changed from 2.96 ± 0.31 mm to 4.42 ± 0.17 mm in short eyes and from 3.33 ± 0.33 mm to 4.94 ± 0.03 mm in long eyes. In short eyes, tilt increased from 6.30° ± 2.23° to 6.53° ± 1.47°, while decentration decreased from 0.20 ± 0.11 mm to 0.16 ± 0.03 mm. In long eyes, tilt changed from 4.98° ± 1.55° to 5.00° ± 1.70° and decentration from 0.13 ± 0.08 mm to 0.11 ± 0.12 mm.
Conclusions
The Clareon IOL (CNA0T0, Alcon, USA) demonstrated stable positioning within the capsular bag across different axial eye lengths with minimal changes in tilt and decentration after cataract surgery. The final analysis, including visual outcomes and a larger dataset, will be presented at the ESCRS congress in Copenhagen.