EVALUATION OF THE PHYSIOLOGICAL TILT OF THE PHAKIC EYE USING LONGITUDINAL AND HIGH RESOLUTION SWEPT SOURCE OPTICAL COHERENCE TOMOGRAPHY: AN EPIDEMIOLOGICAL STUDY
Published 2023 - 27th ESCRS Winter Meeting
Reference: O92 | Type: Free Paper Submission | DOI: 10.82333/jr2c-6f33
Authors: Theresa Höftberger* 1 , Haidar Khalil 1 , Klemens Waser 1 , Peter Laubichler 1 , Matthias Bolz 1 , Nino Hirnschall 1
1Department of Ophthalmology and Optometry, Johannes Kepler University, Linz, Austria,Linz,Austria
Purpose
The study aimed to quantify the physiological lens tilt of the phakic longitudinal and high resolution swept source optical coherence tomography.
Setting
Department of Ophthalmology and Optometry at the Kepler University Clinic Linz, Austria.
Methods
This epidemiological study included patient data collected between June 2020 and October 2022. Requested measurements were two different ss-OCT measurements (IOLMaster700 and Casia2) to investigate on axial eye length, anterior chamber depth and lens thickness and their influence on lens tilt. Statistical analysis included a descriptive analysis as well as random forest plot machine learning
Results
In total, 5302 phakic eyes were included in this study. Mean tilt was 5.2° (SD: 1.7; median: 5.2, range: 0.2 to 16.5). A tilt of 7 ° or more was found in 12.9% (682 cases). Correlations with optical biometry data and odds ratios for a relevant pre-operative tilt will be provided at the ESCRS meeting.
Conclusion
Pre-operative lens tilt varies significantly between patients and in a small, but relevant number of patients tilt values exceed the critical level of 7 degrees. It could be relevant to detect these cases and to include the predicted post-operative tilt in the IOL power calculation.