Selector .selector_input_interaction .selector_input. Selector .selector_input_interaction .selector_spinner. OBJECTIVE: To evaluate the efficacy and safety of the Synchrony® dual-optic lens, for the correction of presbyopia following cataract surgery. The following measurements were taken: Uncorrected visual acuity (UCVA) and best corrected visual acuity (BCVA) for distance, intermediate and near vision, and the objective amplitude of accommodation using the OQAS™ system.
Purpose of review: Presbyopia and cataract development are changes that ubiquitously affect the aging population.Considerable effort has been made in the development of intraocular lenses (IOLs) that allow correction of presbyopia postoperatively.Objective measurement of the accommodative capability offered by the accommodative IOLs is extremely difficult to obtain, and different methods such as autorefractometers, retinoscopy, and ultrasound imaging during accommodative effort, ray tracing, or pharmacological stimulation have been developed but the results are sometimes inconsistent.Despite the difficulties in measuring accommodation, accommodative IOLs represent the future in the attempt to successfully “cure” presbyopia.Prevention and treatment algorithms for capsular contraction syndromes unique to Crystalens and Trulign IOL designs will be discussed.
Summary: Accommodating IOLs that are in current use are constrained by their low and varied amplitude of accommodation.The purpose of this review is to examine the benefits and barriers of accommodating IOLs, with a focus on emerging technologies.Recent findings: True accommodation of an IOL involves a dynamic increase in dioptric power to affect a shift from distance to intermediate or near focus.The Crystalens (Crystalens Bausch and Lomb, Inc., Rochester, NY, USA) was the first IOL labeled by the FDA as an accommodating IOL.Further studies have suggested that the Crystalens and several other single optic presbyopia-correcting IOLs may be providing improved intermediate or near vision predominantly through pseudoaccommodative mechanisms, in addition to small changes in axial translation.Although carefully collected, accuracy cannot be guaranteed. Differing provisions from the publisher's actual policy or licence agreement may be applicable.