Estimating Range Of Vision And Pupil-Size–Related Optical Function In A Spiral Intraocular Lens
Published 2026 - 44th Congress of the ESCRS
Reference: PP12.07 | Type: Free paper | DOI: 10.82333/gvah-0113
Authors: Prof. Dr Dong Hyun Kim* 1 , A/Prof. Hyeck-Soo Son 2 , A/Prof. Grzegorz Łabuz 2 , A/Prof. Gerd Auffarth 2
1Department of Ophthalmology,Korea University College of Medicine,Seoul,Korea, Republic Of, 2Department of Ophthalmology,University of Heidelberg,Heidelberg,Germany
Purpose
To perform a comprehensive in vitro optical assessment of the RayOne Galaxy intraocular lens (IOL) to characterize its optical quality and functional visual range.
Setting
In vitro optical bench study
Methods
Three samples of the +20 D RayOne Galaxy IOL (Rayner) were assessed using the OptiSpheric IOL PRO2 (Trioptics GmbH) bench. All measurements utilized polychromatic light and a model cornea inducing +0.27 μm of spherical aberration. Modulation Transfer Function (MTF), Through-Focus (TF) MTF, area under the MTF (MTFa), and Simulated Visual Acuity (SimVA) were evaluated across pupil diameters of 2.0 to 4.5 mm. Photic phenomena susceptibility was also assessed via Point Spread Function (PSF) imaging.
Results
The Galaxy demonstrated robust optical quality and an extended functional vision for small pupils (2.0 mm to 3.0 mm). At these apertures, the SimVA remained ≤0.2 logMAR across a wide defocus range (+1 D to −3 D). The Galaxy showed a distinct higher plateau in the 0 to −2 D defocus range on the TF MTF curve at 2.0 mm pupil. PSF analysis also demonstrated a compact central peak and minimal halo rings. However, a significant decline in objective metrics, including SimVA, were observed with increasing defocus for pupils >3.5 mm.
Conclusions
The Galaxy demonstrated an extended range of vision with good optical quality and a low degree of positive dysphotopsia, particularly at small pupil sizes. Optical performance at intermediate and near distances tends to decline notably as pupil diameter increases.