[Design and optical principles of multifocal lenses].
Multifocal intraocular lenses (MIOLs) of different designs have been used for more than 20 years in modern cataract surgery. The first IOLs were either refractive 2-3-zone designs or of diffractive concept. All MIOL types, regardless of manufacturer, show reduced contrast sensitivity and increased glare for years. Nevertheless, even first-generation MIOL patients had very good functional results when patient selection, IOL calculation, and surgical techniques were appropriate. Today's gold standard is foldable, aspherical diffractive, or refractive MIOLS. Advancements in technology allow the possibility that MIOLs will be used for aphakia correction as well as presbyopia correction.
Universitäts-Augenklinik Heidelberg, International Vision Correction Research Centre, INF 400, 69120, Heidelberg, Deutschland. ga@uni-hd.de
G U
GU
Auffarth
T M
TM
Rabsilber
T
T
Kohnen
M P
MP
Holzer
D001251:Astigmatism / Q000209:etiology / Q000628:therapy; D015350:Contrast Sensitivity; D006801:Humans; D007910:Lenses, Intraocular / Q000592:standards*; D055095:Optics and Photonics; D011305:Presbyopia / Q000628:therapy; D011474:Prosthesis Design; D012015:Reference Standards; D012029:Refraction, Ocular; D012030:Refractive Errors / Q000628:therapy*