Influence of optic quality on contrast sensitivity and visual acuity in eyes with a rigid or flexible phakic intraocular lens.

Purpose: To determine whether the difference in optic quality between 2 types of phakic intraocular lenses (pIOLs) affects visual quality.

Setting: Fundación Oftalmológica del Mediterráneo, Valencia, Spain.

Methods: Before implantation of a pIOL for myopia, all eyes had an examination including corrected (CDVA) and uncorrected (UDVA) distance visual acuity testing, corneal endothelial cell count (ECC), and intraocular pressure (IOP) measurement.

Modulation transfer function: rigid versus foldable phakic intraocular lenses.

Purpose: To study in a standard eye model the changes in modulation transfer function (MTF) of a monofocal intraocular lens (IOL) when a phakic IOL (pIOL) is placed in the anterior chamber, compare the MTFs of the rigid Artisan pIOL and foldable Artiflex pIOL, and evaluate the temporal evolution of the MTF of the foldable pIOL after the mechanical stress the pIOL undergoes when injected.

Setting: Fundación Oftalmológica del Mediterráneo, Valencia, Spain.

Methods: The MTF values of the IOLs were calculated from the cross-line spread function recorded with the Opal Vector System.