نتایج جستجو برای: intraocular lenses
تعداد نتایج: 31100 فیلتر نتایج به سال:
The new generation multifocal lenses provide the surgeon with several options to meet the specific visual needs and desires of patients. A revolution in presbyopia surgery is being driven by two multifocal intraocular lenses, ReStor and ReZoom. Combined implantation of the ReZoom multifocal lens in nondominant eye and ReStor multifocal lens in dominant eye has been demonstrated to produce stati...
The presence of pseudoexfoliation material on the surface of an intraocular lens (IOL) is a rare finding. We report a series of seven cases with different patterns of pseudoexfoliation material deposition on the posterior chamber IOLs, recognized 2-20 years after cataract surgery. Six patients had an IOL implanted in the capsular bag and one in the ciliary sulcus. Two patients had undergone pos...
Wearable contact lenses which can monitor physiological parameters have attracted substantial interests due to the capability of direct detection of biomarkers contained in body fluids. However, previously reported contact lens sensors can only monitor a single analyte at a time. Furthermore, such ocular contact lenses generally obstruct the field of vision of the subject. Here, we developed a ...
Abstract Background: The aim of this study was to evaluate the efficacy and safety of phacoemulsification and the implantation of intraocular lenses (IOL) combined with trabeculectomy supplemented by releasable sutures and antimetabolite agents. Methods:Phacotrabeculectomy was performed in 36 eyes of 30 patients who hadmedically uncontrolle...
The purpose of this paper is to consider the long-term results of the iris clip lens in senile aphakia. It is not intended to discuss the many different forms of intraocular lens implants. Ophthalmic surgeons are well aware of the discouraging shortand long-term failure rate when contact lenses are used to correct aphakia, and this has stimulated renewed interest in intraocular lens implants in...
Cataract surgery dates back to early civilisations with the records of early Egyptian, Chinese and Indus Valley civilisations describing primitive methods of cataract extraction, but intraocular lenses (IOLs) to replace the optical power of the crystalline lens are relatively new. They were not introduced until after the Second World War. It was Harold Ridley’s experience with aircraft pilots w...
A retrospective study of 102 cases of Boberg-Ans intraocular lens implantations was conducted. The operations were performed in 3 Birmingham eye units by 5 consultants and 6 surgeons in training. Follow-up ranged from 6 months to 2 years, with a mean of 12.6 months. No cases with adequate follow-up were excluded. When eyes with pre-existing adverse factors were excluded, 87% achieved 6/12 or be...
SIR, We welcome your invitation to reply to the editorial comment on our article,' as we consider Mr David Taylor overstates the case against intraocular lens implantation.) We do not differ on the management of the majority of children presenting with cataract, and are equally aware that amblyopia is the dominant factor in their management and prognosis. We agree that on present knowledge pati...
A new and complete methodology of monofocal intraocular lens (IOL) design is presented aiming at isoplanatism, i.e. IOLs that provide the eye with optimized optical quality over a wide field of view (typically in a range of ten degrees). The methodology uses a merit function considering dimensional and biomechanical constraints, and a geometrical optical quality metric that is evaluated simulta...
PURPOSE To report two cases of spoke-like intraocular lens (IOL) opacification that resembles pseudoexfoliation of the crystalline lens. METHODS Case series presentation. RESULTS Patient 1 developed a circle of spoke-like opacification on the anterior IOL surface 7 years after phacoemulsification. Patient 2 had paracentral anterior surface IOL opacification 18 months after cataract extracti...
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