Optical formula to predict outcomes after implantation of accommodating intraocular lenses.
OBJECTIVE
To analyze the effect of optical parameters on the outcomes of accommodating intraocular lens (IOL) implantation in cataract surgery.


METHODS
Department of Ophthalmology, KULeuven University, Leuven, Belgium.


METHODS
Thin-lens approximation optics were used to obtain a formula containing the following variables: axial length (AL), mean keratometry (Km), anterior chamber depth (ACD), and presumed anterior shift of the IOL (dACD). The influence of these variables was separately analyzed.


RESULTS
The accommodative amplitude (AA) decreased with a longer AL and higher Km. The AA varied between -5.4 diopters (D) and 0.0 D in eyes with an AL between 20.0 mm and 28.0 mm and a Km between 38.0 D and 52.00 D. The dACD was also a significant factor influencing the AA. The ACD had less influence on the AA.


CONCLUSIONS
The obtained formula could guide selection of candidates for accommodating IOL implantation.
Department of Ophthalmology, KULeuven University Hospital, Leuven, The Netherlands. tmissotten@yahoo.com
Tom
T
Missotten
Thibault
T
Verhamme
Johan
J
Blanckaert
Guy
G
Missotten
D000065:Accommodation, Ocular / Q000502:physiology*; D000867:Anterior Chamber / Q000033:anatomy & histology; D006801:Humans; D019654:Lens Implantation, Intraocular / Q000379:methods*; D007910:Lenses, Intraocular; D008433:Mathematics; D055095:Optics and Photonics; D016896:Treatment Outcome