Intraocular lenses and surgery
Johnson & Johnson Vision, 0.75D, corneal astigmatism
IOL, EYE, LENS
The TECNIS Symfony IOL (Johnson & Johnson Vision, Santa Ana, USA) is a single-piece, aspheric EDOF IOL. The optical zone is 6.0 mm. It has a diffractive posterior surface which has echelette design to form an elongated focus.The TECNIS ZMB00 (Johnson & Johnson Vision, Santa Ana, USA) is a single-piece, aspheric bifocal lens. The optical zone is 6.0 mm. It has a diffractive multifocal posterior surface which designed to provide both near and distance vision, with a near power of + 4.0 D.The same experienced surgeon performed phacoemulsification and implantation of TECNIS Symfony IOL or ZMB00 IOL using the Stellaris phacoemulsification system (Bausch&Lomb, Rochester NY, USA) in all patients. The main incision size is 2.0 mm. Surgical navigation (Calisto Eye, Carl Zeiss Meditec AG, Jena, Germany) was used in 19 eyes to correct a preoperative corneal astigmatism of > 0.75D with a steep axis corneal incision (2.75 mm). The interval between binocular surgeries is 1 week.