Clinical Ophthalmology (Aug 2023)
The Novel Optical Design and Clinical Classification of a Wavefront-Shaping Presbyopia-Correcting Intraocular Lens
Abstract
Thomas Kohnen,1 John P Berdahl,2 Xin Hong,3 Chandra Bala4 1Department of Ophthalmology, Goethe University Frankfurt, Frankfurt am Main, Germany; 2Vance Thompson Vision, Sioux Falls, SD, USA; 3Alcon Vision LLC, Fort Worth, TX, USA; 4PersonalEYES, Sydney, NSW, AustraliaCorrespondence: Thomas Kohnen, Department of Ophthalmology, Goethe University, Theodor-Stern-Kai 7, Frankfurt, 60590, Germany, Email [email protected]: To evaluate the clinical rationale of wavefront-shaping technology, describe how intraocular lenses (IOLs) using wavefront-shaping technology are differentiated from refractive or diffractive optical presbyopia-correcting designs, and describe the mode of action of this technology.Methods: Extended depth of focus (EDoF) IOLs are the latest class of presbyopia-correcting IOLs addressing the growing demand of patients for reduced spectacle dependence. These use various optical technologies, including diffractive designs (eg, TECNIS Symfony ZXR00 and AT LARA 29 MP) and non-diffractive designs such as small aperture (eg, IC-8 IOL and XtraFocus Pinhole Implant), spherical aberration (eg, MINI WELL Ready and LuxSmart), and wavefront shaping (eg, AcrySof IQ Vivity DFT015 and Clareon Vivity CNWET0). Despite some improvement in visual acuity at intermediate and near distances, these technologies can still be associated with increased rate of visual disturbances or poorer distance vision compared with monofocal IOLs. One way to overcome such limitations is using a wavefront-shaping optical principle.Results: Clinical data show that wavefront-shaping technology results in a continuous EDoF compared with a monofocal IOL while exhibiting a minimal halo, similar to an aspheric monofocal IOL. Clinically, this translates to a lens that has proven to exceed the American National Standards Institute/American Academy of Ophthalmology criteria for an EDoF IOL.Conclusion: The novel wavefront-shaping optic technology allows patients to achieve a continuous range of vision from distance to functional near with low levels of visual disturbances comparable with aspheric monofocal IOLs.Keywords: cataract surgery, visual disturbances, extended depth of focus, wavefront-shaping technology
