Predicted Intraocular Lens Power Distribution In A Large Greek Cataract Cohort Using Swept-Source Oct Biometry
Published 2026 - 44th Congress of the ESCRS
Reference: POCAT260 | Type: Poster | DOI: 10.82333/762j-hf09
Authors: Dr Efstathios Athanasopoulos* 1 , Dr Dimitra Sakka 1 , Dr Athanasios Zisimopoulos 1 , Dr Efthymia Kalogera 1 , Dr Ioannis Markopoulos 1 , Dr Christina Kourentis 1 , Dr Kalliroi Konstantopoulou 1 , Dr Iakovos Michail 1 , Dr Kalliopi Diamantopoulou 1 , Dr Ioannis Halkiadakis 1 , Dr Efstratios Paroikakis 2 , Dr Vasileios Peponis 1 , Dr Michael Karampelas 1
1A Ophthalmology Department,Ophthalmiatreio Athinon,Athens ,Greece, 2B Ophthalmology Department,Ophthalmiatreio Athinon,Athens ,Greece
Purpose
To characterize predicted intraocular lens (IOL) power distribution and examine sex-related differences among Greek cataract surgery candidates.
Setting
Ophthalmiatreion Athinon, a public, tertiary, Specialized Eye Hospital, in Athens, Greece
Methods
In this retrospective cross-sectional study, optical biometry was performed, using Swept Source-Optical Coherence Tomography(Argos; Alcon, Fort Worth, TX, USA), in consecutive patients scheduled for phacoemulsification at a public tertiary center in Athens between July 2024 and July 2025. Axial length and keratometry were measured according to manufacturer quality criteria. IOL power was predicted descriptively using the Hoffer Q formula, targeting emmetropia, with a hypothetical A-constant of 119.2 and 0.50 D increments. Distribution characteristics and sex-stratified comparisons were analyzed.
Results
A total of 6,258 eyes from 3,726 patients were included (58.9% female; mean age 73.36 ± 8.41 years). The predicted IOL power distribution was centered in the low 20-diopter range. Mean predicted IOL power was 20.72 ± 3.52 D, with a median of 21.0 D. The 5th and 95th percentiles were 14.0 D and 25.5 D, respectively. The most frequent IOL powers were 22.0 D (n = 499), 21.5 D (n = 498), and 22.5 D (n = 455). Female eyes were overrepresented both below the 5th percentile (5.54% vs 4.00%; p = 0.006) and above the 95th percentile (4.42% vs 2.88%; p = 0.002) compared with male eyes
Conclusions
In this large Greek cataract cohort, predicted IOL power followed a consistent distribution, with significant sex-related differences at distribution extremes. Population-based IOL power data may inform lens inventory planning in high-volume surgical centers and highlight subgroups requiring broader lens availability.