Dynamic Stimulation Aberrometry

Maximilian Hammer, MD; Yvonne Heggemann, MSc; Gerd U. Auffarth, MD, PhD

Ophthalmology Science (Mar 2024)

Dynamic Stimulation Aberrometry

Maximilian Hammer, MD,
Yvonne Heggemann, MSc,
Gerd U. Auffarth, MD, PhD

Affiliations

Maximilian Hammer, MD: David J. Apple Laboratory for Vision Research, Heidelberg, Germany; Department of Ophthalmology, University of Heidelberg, International Vision Correction Research Centre, Heidelberg, Germany
Yvonne Heggemann, MSc: David J. Apple Laboratory for Vision Research, Heidelberg, Germany; Department of Ophthalmology, University of Heidelberg, International Vision Correction Research Centre, Heidelberg, Germany
Gerd U. Auffarth, MD, PhD: David J. Apple Laboratory for Vision Research, Heidelberg, Germany; Department of Ophthalmology, University of Heidelberg, International Vision Correction Research Centre, Heidelberg, Germany; Correspondence: Gerd U. Auffarth, MD, PhD, David J. Apple International Laboratory for Ocular Pathology, International Vision Correction Research Centre (IVCRC), Department of Ophthalmology, Ruprecht-Karls University of Heidelberg, Im Neuenheimer Feld 400, Heidelberg 69120, Germany.

Journal volume & issue: Vol. 4, no. 2
p. 100374

Abstract

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Purpose: Anterior iris-claw phakic intraocular lens (pIOL) implantation is a treatment option for refractive, ametropic patients. However, the postoperative accommodative ability has not been systematically researched. Dynamic stimulation aberrometry allows the objective and dynamical measurement of accommodation by observing ocular aberrations during the accommodation process. We investigated the dynamic accommodative ability after pIOL implantation compared with a healthy age- and gender-matched control group. Design: Clinical, comparative case–control study. Subjects: We included patients aged 18–50 years that either underwent pIOL implantation > 1 month ago or served as a healthy, phakic control group. Methods: The accommodative ability and pupil dynamics of both groups were investigated using dynamic stimulation aberrometry. The method allows the analysis of dynamic parameters during accommodation, such as the accommodation speed. A 1:1 propensity score matching was conducted based on the patients’ age and gender. Main Outcome Measures: Parameters of objective accommodation, such as accommodative amplitude and pupil dynamic during accommodation. Results: Fifty-eight healthy, phakic eyes < 50 years of age and 21 eyes after pIOL implantation to correct myopia (pIOL, Verisyse, AMO, Inc) were enrolled. Patients that underwent anterior pIOL implantation were examined on average 24 ± 18 months after surgery. After matching, the mean age of both groups was not significantly different (35 ± 8 vs. 34 ± 8 years). No significant difference in dynamic parameters of accommodation or the accommodative amplitude (2.8 ± 1.4 and 2.9 ± 1.4 diopters [D] for pIOL and control group, P = 0.82) were seen. Maximum and minimum pupil sizes were not significantly different. The change in pupil size during deaccommodation was significantly faster in patients after pIOL implantation (P < 0.001). Conclusions: Dynamic stimulation aberrometry allowed the objective, dynamic, measurement of wavefronts in subjects with accommodative amplitudes up to 7 D. Phakic intraocular lens implantation does not impair the accommodative ability. It alters pupil dynamics during deaccommodation. Financial Disclosure(s): Proprietary or commercial disclosure may be found in the Footnotes and Disclosures at the end of this article.

Published in Ophthalmology Science

ISSN: 2666-9145 (Online)
Publisher: Elsevier
Country of publisher: United States
LCC subjects: Medicine: Ophthalmology
Website: https://www.journals.elsevier.com/ophthalmology-science/

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