title: Dynamic stimulation of accommodation.
abstract: We describe the analysis of accommodation using wavefront measurements in phakic and pseudophakic eyes. Accommodation measurements were performed in phakic and pseudophakic eyes using a dynamic stimulation aberrometry (DSA) device (Optana) as an attachment to the WASCA aberrometer (Carl Zeiss Meditec AG). Aberrations were measured for distance fixation (3.0 m) and near fixation (0.3 to 0.11 m) presenting different accommodative stimuli (3.0 to 9.0 diopters). The device was able to detect changes in aberrations using near and distance stimulation. Eyes with phakic iris-fixated intraocular lenses (IOLs) showed normal age-correlated accommodation. In pseudophakic eyes, accommodation varied depending on the IOL. With monofocal IOLs (eg, MA60AC, Alcon), there was no accommodation; with an accommodating IOL (eg, Synchrony, Visiogen), there was a low level of accommodation. The DSA device is capable of measuring accommodation using wavefront data. It will help to further analyze changes in accommodation-related wavefront aberrations.
authors.affiliation: University of Heidelberg, Department of Ophthalmology, International Vision Correction Research Centre, Heidelberg, Germany.
authors.forename: Angela
authors.initials: A
authors.lastname: Ehmer
authors.forename: Annett
authors.initials: A
authors.lastname: Mannsfeld
authors.forename: Gerd U
authors.initials: GU
authors.lastname: Auffarth
authors.forename: Mike P
authors.initials: MP
authors.lastname: Holzer
mesh_terms: D000065:Accommodation, Ocular / Q000502:physiology*; D000328:Adult; D003941:Diagnostic Techniques, Ophthalmological; D005240:Feasibility Studies; D005403:Fixation, Ocular / Q000502:physiology; D006801:Humans; D007908:Lens, Crystalline / Q000502:physiology*; D007910:Lenses, Intraocular; D019591:Pseudophakia / Q000503:physiopathology*