Range of Pseudoaccommodation in Eyes With an Accommodative Intraocular Lens

Abstract

Abstract: : Purpose: To measure the range of pseudoaccommodation in eyes with an accommodative intraocular lens (IOL) and to compare that with a monofocal IOL. Methods: Ten eyes (7 patients) with an accommodative IOL (1CU, HumanOptics) (group A) and 5 eyes (5 patients) with a monofocal IOL (SA60AT, Alcon) (group M) were included. Distance and near visual acuity (VA) levels with and without correction were measured. Retinal images of Landolt’s rings at various distances (from 0.33 to infinity) were simulated using an original image–simulation software (Retinage, not for sale) from the data of wavefront aberrations measured using a refractive power/corneal analyzer (ARK–10000, Nidek) and pupil diameter measured using an open–view type pupillometer (FP–10000, TMI). Range of pseudoaccommodation was defined as the range that the contrast of the gap of Landolt’s ring corresponding to 0.4 of VA was over 15% in simulated retinal images. Results: There were no significant differences between the groups in age and postoperative spherical equivalent. The uncorrected–, corrected– distance VA and corrected near VA did not differ significantly, but the uncorrected near VA was significantly different. The range of pseudoaccommodation (D) was 0.87±0.49 in group A and 0.65±0.21 in group M, and they were not significantly different. Conclusions: The range of pseudoaccommodation due to aberrations in group A did not differ significantly from group M and was too small to explain better near VA.

Keywords: clinical laboratory testing • optical properties • cataract