Objective Accommodation After Phakic Anterior Iris-Claw Iol Implantation To Correct Myopia

Phakic, anterior iris-claw IOLs are an option to treat high refractive errors. The ability of accommodation has never been systemically and objectively researched after surgery. Dynamic stimulation aberrometry allows to examine the objective binocular accommodation based on wavefront aberrations throughout the entire process of accommodation. In this study, we researched accommodation of patients after pIOL-implantation compared to healthy controls of the same age.

Patients were recruited at a tertiary care eye hospital in Heidelberg, Germany.

Patients after pIOL-implantation and aged-matched healthy controls between 18 and 50 years were examined. DSA was applied in both groups to examine the accommodative ability and pupil dynamics.

58 eyes of 58 healthy control eyes and 21 eyes of 21 patients after pIOL-implantation were included in this study. There was no significant difference in age between groups (35.4 ± 7.8 and 34.7 ± 9.8 for pIOL- and control-group, respectively). Patients were examined on average 2 years after surgery to rule out confounding factors of recent surgery. Dynamic parameters and the maximum amplitude of accommodation as well as pupil dynamics were not impaired by the iris-fixated lens (maximum accommodative amplitude: 2.97 dpt (IQR: 1.44-3.73 dpt and 3.59 dpt (IQR: 1.16-4.31 dpt) for pIOL- and control-group, respectively).

Dynamic stimulation aberrometry allows the objective measurement of the accommodative ability up to 7 dpt using wavefront measurements. Iris-fixated phakic lenses do not impair the accommodative ability.