Results 161 to 170 of about 2,701 (197)

Tilt and decentration of the implanted posterior chamber intraocular lens

Journal of Cataract and Refractive Surgery, 1991
Management of surgically induced astigmatism is an important problem for surgeons implanting intraocular lenses. Besides corneal astigmatism, the fixation status of the intraocular lens (IOL) may contribute to total astigmatism. This study was undertaken to evaluate the effect of tilt and decentration of the implanted posterior chamber IOL on the total
J, Kozaki, H, Tanihara, A, Yasuda, M, Nagata   +3 more
openaire   +2 more sources

Effect of intraocular lens decentration on retinal image contrast

Journal of Cataract and Refractive Surgery, 1990
We describe an optical model of the eye that allowed the effect of intraocular lens (IOL) decentration on retinal image contrast to be photographically studied. Decentrations of varying degrees of severity were modeled to correlate the amount of aphakic pupillary area with the contrast of the resulting images as measured by a digital photometer.
S, Kumar, D, Miller
openaire   +2 more sources

Theoretical analysis of image defocus with intraocular lens decentration

Journal of Cataract and Refractive Surgery, 1995
We used a theoretical eye model to evaluate the effect on peripheral images when planoconvex, biconvex, and meniscus intraocular lenses (IOLs) decenter 1 mm or 2 mm upward or downward from the pupillary center. A light source was projected from an angle of 0, 20, 28, or 40 degrees downward to a retina with a radius of curvature of 11 mm.
J, Kozaki, F, Takahashi
openaire   +2 more sources

Influence of intraocular lens tilt and decentration on wavefront aberrations

Journal of Cataract and Refractive Surgery, 2004
To investigate the influence of intraocular lens (IOL) tilt and decentration on higher-order aberrations (HOAs) using wavefront analysis.Department of Ophthalmology, Nara Medical University, Nara, Japan.Forty eyes of 40 patients with a 5.5 mm optic, foldable acrylic IOL were examined 4 to 48 months postoperatively.
Futoshi, Taketani, Toyoaki, Matuura, Eiichi, Yukawa, Yoshiaki, Hara   +3 more
openaire   +2 more sources

Decentration, tilt, and near vision of the Array multifocal intraocular lens

Journal of Cataract and Refractive Surgery, 2000
To study the periodic changes in decentration, tilt, and near vision in eyes with the Array(R) multifocal intraocular lens (IOL).Department of Ophthalmology, St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Korea.This study comprised 20 eyes of 10 patients older than 60 years who had binocular cataract and bilateral ...
H C, Yang, S K, Chung, N H, Baek
openaire   +2 more sources

Tilt and decentration of the crystalline lens and intraocular lens after FLACS

Journal of Cataract & Refractive Surgery
Purpose: To evaluate crystalline lens (CL) and intraocular lens (IOL) tilt and decentration after uneventful femtosecond laser–assisted cataract surgery (FLACS) in Caucasian eyes. Setting: Clínica Miranza, Madrid, Spain.
Felix Gonzalez-Lopez, Santiago Delgado-Tirado, Ricardo Perez-Izquierdo, Daniel Gonzalez-Gonzalez, David Medel, Alba Saez-Corrales, Enelia Cristina Pelaez-Gutierrez   +6 more
openaire   +2 more sources

Optical performance of 3 intraocular lens designs in the presence of decentration

Journal of Cataract and Refractive Surgery, 2005
To study the theoretical optical performance of 3 intraocular lens (IOL) designs in the presence of IOL decentration.Optics Center, Bausch & Lomb, Rochester, New York, USA.A ray-tracing program was used to evaluate the effect of IOL decentration on the optical performance of 3 silicone IOLs (LI61U, Bausch & Lomb; Tecnis Z9000, Advanced Medical Optics ...
Griffith E, Altmann, Louis D, Nichamin, Stephen S, Lane, Jay S, Pepose   +3 more
openaire   +2 more sources

Intraocular lens tilt and decentration after implantation in eyes with glaucoma

Journal of Cataract and Refractive Surgery, 1999
To evaluate the extent of intraocular lens (IOL) tilt and decentration after implantation in eyes with glaucoma.Hayashi Eye Hospital, Fukuoka, Japan.Fifty-two eyes of 52 patients with glaucoma and 52 control eyes from 52 age-matched patients had phacoemulsification with IOL implantation.
K, Hayashi, H, Hayashi, F, Nakao, F, Hayashi   +3 more
openaire   +2 more sources

Intraocular Omni-focal Lens With Increased Tolerance to Decentration and Astigmatism

Journal of Refractive Surgery, 2010
PURPOSE: To measure the optical performance of an extended depth of focus (EDOF) intraocular lens (IOL), which provides an imaging solution for near, intermediate, and distance ranges, and to compare its optical performance to available bifocal IOLs with various extents of decentration and astigmatism aberrations.
Shai, Ben Yaish, Alex, Zlotnik, Ido, Raveh, Oren, Yehezkel, Michael, Belkin, Zeev, Zalevsky   +5 more
openaire   +2 more sources

Impact of intraocular lens haptic design and orientation on decentration and tilt

Journal of Cataract and Refractive Surgery, 2011
To assess the effect of intraocular lens (IOL) orientation (vertical versus horizontal) and haptic design (1-piece versus 3-piece) on centration and tilt using a Purkinje meter.Moorfields Eye Hospital NHS Foundation Trust, London, United Kingdom.Randomized pilot study with intrapatient comparison.In part 1 of this study, patients received plate-haptic ...
Alja, Crnej, Nino, Hirnschall, Yutaro, Nishi, Vinod, Gangwani, Juan, Tabernero, Pablo, Artal, Oliver, Findl   +6 more
openaire   +2 more sources