نتایج جستجو برای: intraocular lens iol
تعداد نتایج: 64884 فیلتر نتایج به سال:
PURPOSE Partial Coherence Interferometry (PCI) is a fast, noncontact method to calculate lens implant power for cataract surgery. It has been reported as a potentially more accurate method than ultrasound biometry. Prospective study of the refractive outcomes of a consecutive series of patients undergoing phacoemulsification surgery with preoperative biometry by both ultrasound A-scan and PCI. ...
Ocular trauma is one of the leading causes of visual impairment worldwide. Because of the popularity of cataract surgeries, aged individuals with ocular trauma commonly have a surgical wound in their eyes. The purpose of this study was to evaluate the visual outcome of cases that were coincident with intraocular lens (IOL) ejection in the eyes with ruptured open-globe ocular injuries. Consecuti...
The appearance of images through a multifocal intraocular lens (IOL) was simulated. The optical transfer function (OTF) of a model eye containing the multifocal lens was measured and divided by the OTF of the model eye with a monofocal IOL. This ratio was used to filter digital images, generating simulations that represent the retinal images seen through a multifocal intraocular lens when viewe...
Dear Editor, Berger’s space is a potential compartment that can present behind the crystalline lens but is not open in normal situations. This space is formed by the posterior lens surface and anterior vitreous face and is circumscribed by Weiger’s ligament [1]. Except for some congenital abnormalities, Berger’s space is rarely involved in ocular disease because of vulnerability of structures s...
We propose a complete methodology to develop custom monofocal Intraocular Lens (IOL) designs and evaluate their performance on-axis based on an analytical formulation. The analytical formulation was based on Gaussian and primary aberration theory applied to custom (individual biometric data) and realistic (multilayer cornea and thick IOL) pseudoaphakic eye models. Gradient-based optimization al...
A 51-year-old woman with age-related cataract had an uneventful phacoemulsification and a Tecnis ZM900 multifocal intraocular lens (IOL) implantation in both eyes. During IOL implantation in the left eye, the optic was unintentionally reversed in the bag and left that way. The refraction surprise was not significant and six months postoperatively the corrected distance visual acuity in both eye...
Cataract surgery, meaning exchange of the opaque lens in the eye with an artificial lens, is nowadays one of the most successful surgical procedures ever known. It is also the most frequent surgery performed in the Western world. In Sweden alone, more than 100,000 cataract operations are performed annually. Severe complications are rare, occurring only in a few percent of the patients, but owin...
Dear Editor, Intraocular lens (IOL) fracture is a relatively rare complication of cataract surgery during IOL implantation [1]. Foldable IOLs specifically are often fractured by either forceps or injector systems during IOL loading [2,3]. To improve the efficacy and safety of cataract surgery, many preloaded IOLs have been developed and are widely used. Here, we report the first optic fracture ...
purpose: to report the outcomes of graft refractive surgery (grs) together with clear-cornea phacoemulsification and intraocular lens (iol) implantation in post-penetrating keratoplasty (pkp) eyes. methods: fourteen eyes of 13 patients who had received pkp underwent simultaneous grs (relaxing incisions with or without counter-quadrant compression sutures) and clear-cornea phacoemulsification wi...
We experienced a case of intraocular lens (IOL) luxation with the capsular bag after vitrectomy. The case was a 66-year-old female in whom an IOL was implanted one year after surgery for giant tear retinal detachment using silicone oil. Four years after the implantation surgery, the patient suffered subluxation of the IOL with the capsular bag. Examinations of the luxated IOL with the capsular ...
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