1. Current concepts of multifocal intraocular lenses; design and testing considerations for the aspheric multifocal IOL;Christie,1991
2. Visual and refractive results of the dilfractive multifocal;Gimbel,1991
3. IOLAB Nuvue™ multifocal intraocular lens;Keates,1991
4. Vision with the True Vista bifocal IOL;Knorz;Eur J Implant Refract Surg,1992
5. Optics and contrast questions connected with the bifocal IOL;Miller,1991