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Intraocular lenses

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https://www.readbyqxmd.com/read/29339916/pediatric-cataract-surgery-with-hydrophilic-acrylic-intraocular-lens-implantation-in-nepalese-children
#1
Srijana Adhikari, Ujjowala D Shrestha
Purpose: To assess the outcome of cataract surgery with hydrophilic acrylic intraocular lens (IOL) implantation in children with congenital and developmental cataracts. Method: A retrospective review of medical records of children with congenital or developmental cataracts who underwent cataract surgery with hydrophilic IOL implantation, from January 2011 to December 2014 in a tertiary eye hospital in Nepal. Primary posterior capsulotomy, anterior vitrectomy, and IOL implantation was done in children 8 years or younger, while older children underwent only lens aspiration and IOL implantation...
2018: Clinical Ophthalmology
https://www.readbyqxmd.com/read/29331294/-study-of-the-results-scleral-fixated-intraocular-lenses-in-the-absence-of-capsular-support
#2
A Benarous, A Drimbea, S Milazzo
INTRODUCTION: In the absence of sufficient capsular support, scleral fixation of the intraocular lens is an interesting alternative. The goal is to evaluate this implantation technique when traditional implantation is impossible. PATIENTS AND METHODS: This is an observational, retrospective, monocentric study at the Amiens university medical center between August 2013 and March 2016. Patients all underwent scleral fixation of a three-piece implant without suturing of the haptics, after posterior vitrectomy...
January 10, 2018: Journal Français D'ophtalmologie
https://www.readbyqxmd.com/read/29331293/toric-lens-implantation-in-cataract-surgery-automated-versus-manual-horizontal-axis-marking-analysis-of-50%C3%A2-cases
#3
M Raucau, H El Chehab, E Agard, C Lagenaite, C Dot
SUBJECT: The main objective of our study was to evaluate the contribution of automated conjunctival registration in the alignment of toric intraocular lenses by comparing automated registration optimized with Callisto® to manual marking of the horizontal axis. MATERIALS AND METHODS: We performed a prospective, descriptive, monocentric study on patients undergoing cataract surgery with a toric intraocular lens (Asphina 709 Zeiss), performed by a surgeon with good experience in toric implants, between September 2016 and March 2017...
January 10, 2018: Journal Français D'ophtalmologie
https://www.readbyqxmd.com/read/29326824/secondary-multifocal-intraocular-lens-implantation-a-novel-management-strategy-for-white-cataracts
#4
Jiawen Ling, Yiyong Qian, Peirong Lu
Objectives: This study was designed to analyse the outcomes of secondary multifocal intraocular lens implantation in eyes with white cataracts. Methods: White cataract patients undergoing secondary multifocal intraocular lens implantation between June 2014 and January 2015 were evaluated prospectively. As opposed to a conventional primary intraocular lens implantation for an optimal patient, the white cataract was first extracted, followed by optical biometry measurements...
2018: SAGE Open Medical Case Reports
https://www.readbyqxmd.com/read/29305312/population-based-incidence-of-intraocular-lens-exchange-in-olmsted-county-minnesota
#5
Erick D Bothun, Lilian C B Cavalcante, David O Hodge, Sanjay V Patel
PURPOSE: To determine the population-based incidence of pseudophakic intraocular lens exchange in Olmsted County, Minnesota. DESIGN: Retrospective review of a population-based cohort. METHODS: Patients undergoing pseudophakic intraocular lens exchange in Olmsted County, MN between January 1, 1986 and December 31, 2016, were identified from the Rochester Epidemiology Project medical record linkage system. Indications and outcomes were determined, and the incidence rate was calculated as cases per 1,000,000 person-years...
January 2, 2018: American Journal of Ophthalmology
https://www.readbyqxmd.com/read/29303885/candida-endophthalmitis-after-descemet-stripping-automated-endothelial-keratoplasty-with-grafts-from-both-eyes-of-a-donor-with-possible-systemic-candidiasis
#6
Sotiria Palioura, Kavitha Sivaraman, Madhura Joag, Adam Sise, Juan F Batlle, Darlene Miller, Edgar M Espana, Guillermo Amescua, Sonia H Yoo, Anat Galor, Carol L Karp
PURPOSE: To report 2 cases with late postoperative Candida albicans interface keratitis and endophthalmitis after Descemet stripping automated endothelial keratoplasty (DSAEK) with corneal grafts originating from a single donor with a history of presumed pulmonary candidiasis. METHODS: Two patients underwent uncomplicated DSAEK by 2 corneal surgeons at different surgery centers but with tissue from the same donor and were referred to the Bascom Palmer Eye Institute with multifocal infiltrates at the graft-host cornea interface 6 to 8 weeks later, and anterior chamber cultures that were positive for the same genetic strain of C...
January 4, 2018: Cornea
https://www.readbyqxmd.com/read/29296549/multifocal-intraocular-lenses-types-outcomes-complications-and-how-to-solve-them
#7
REVIEW
Liberdade C Salerno, Mauro C Tiveron, Jorge L Alió
The multifocal intraocular lenses (IOLs) available are often able to restore visual function and allow spectacle independence after their implantation with great levels of patient satisfaction. The factors associated with the postoperatory success include the careful selection of the patient, the knowledge about the IOLs' design, and their visual performance added to the proper surgical technique and management of possible complications as demonstrated by the evidence available.
October 2017: Taiwan Journal of Ophthalmology
https://www.readbyqxmd.com/read/29288733/ophthalmic-gels-past-present-and-future
#8
Ali A Al-Kinani, Ghada Zidan, Naba Elsaid, Ali Seyfoddin, Adam W G Alani, Raid G Alany
Aqueous gels formulated using hydrophilic polymers (hydrogels) along with those based on stimuli responsive polymers (in situ gelling or gel forming systems) continue to attract increasing interest for various eye health-related applications. They allow the incorporation of a variety of ophthalmic pharmaceuticals to achieve sustained and therapeutic levels of drugs and bioactives at target ocular sites. The integration of sophisticated drug delivery technologies such as nanotechnology-based, intelligent and environment responsive systems can extend current treatment duration to provide more clinically relevant time courses (weeks and months instead of hours and days) which will inevitably reduce dose frequency, increase patient compliance and improve clinical outcomes...
December 27, 2017: Advanced Drug Delivery Reviews
https://www.readbyqxmd.com/read/29274987/anterior-capsulorhexis-opening-reduction-after-cataract-surgery-with-subluxated-lenses
#9
Juris Vanags, Renārs Erts, Guna Laganovska
BACKGROUND AND OBJECTIVE: This study sought to evaluate anterior capsulorhexis opening (ACO) reductions after surgery for a subluxated lens. Significant reduction of an ACO supports direct zonular involvement (capsular factors excluded by use of capsular tension rings [CTRs] and modern intraocular lens [IOLs]), and these findings question the long-term efficacy of subluxated lens surgery by means of cataract surgery. A small ACO due to lens mobility, non-enlargement of the ACO, and no lens epithelial cell washing due to an additional risk of further zonular damage were left as additional features to evaluate the possible outcomes of this simplified but still complicated surgery...
December 14, 2017: Medicina
https://www.readbyqxmd.com/read/29274019/switch-from-bak-preserved-to-preservative-free-latanoprost-decreases-anterior-chamber-flare-in-poag-patients
#10
Ph A Kestelyn, Ph G Kestelyn, D De Bacquer, A M Stevens
PURPOSE: To validate the hypothesis that BAK induces low-grade inflammation in the anterior chamber, we designed a study to investigate whether switching from BAK-preserved to preservative-free latanoprost in patients with primary open-angle glaucoma (POAG) would reduce the flare levels. PATIENTS: Forty-one eyes of twenty-two patients with primary open-angle glaucoma treated with BAK-preserved latanoprost for at least 6 months as monotherapy were included. Exclusion criteria included any use of topical eye drops other than latanoprost, pseudoexfoliation and pigment dispersion glaucoma, wearing of contact lenses and intraocular surgery in the past year...
December 22, 2017: International Ophthalmology
https://www.readbyqxmd.com/read/29232333/structural-analysis-and-comprehensive-surgical-outcomes-of-the-sutureless-intrascleral-fixation-of-secondary-intraocular-lenses-in-human-eyes
#11
Bozho Todorich, Maxwell S Stem, Keshav Kooragayala, Aristomenis Thanos, Lisa J Faia, George A Williams, Tarek S Hassan, Maria A Woodward, Jeremy D Wolfe
PURPOSE: To describe surgical outcomes and structural characteristics of intraocular lenses (IOLs) implanted with transconjunctival sutureless intrascleral (SIS) fixation in human eyes. DESIGN: Retrospective interventional surgical case series involving live and cadaveric human eyes. METHODS: In this study, we investigated the surgical outcomes and structural anatomy of secondary IOLs implanted with the SIS technique in human eyes. All cases involving SIS IOL fixation performed at a single academic center from January 1, 2012, through July 30, 2016, were reviewed to describe the surgical technique, common indications, clinical outcomes, and the rate of common operative complications...
December 11, 2017: Retina
https://www.readbyqxmd.com/read/29227508/laboratory-evaluation-of-the-influence-of-decentration-and-pupil-size-on-the-optical-performance-of-a-monofocal-bifocal-and-trifocal-intraocular-lens
#12
Tamer Tandogan, Hyeck Soo Son, Chul Young Choi, Michael C Knorz, Gerd U Auffarth, Ramin Khoramnia
PURPOSE: To assess the influence of decentration and aperture size on the optical quality of different intraocular lenses (IOLs) of the same material, body design, and refractive power using standardized optical bench testing. METHODS: Using an optical bench set-up, an aspheric monofocal (CT ASPHINA 409M; Carl Zeiss Meditec, Jena, Germany), an aspheric diffractive bifocal (AT LISA 809M; Carl Zeiss Meditec), and an aspheric diffractive trifocal (AT LISA 839M; Carl Zeiss Meditec) intraocular lens (IOL) were evaluated, each with the same distance power, body design, and material...
December 1, 2017: Journal of Refractive Surgery
https://www.readbyqxmd.com/read/29227507/the-use-of-capsular-tension-rings-to-reduce-refractive-shift-in-patients-with-implantation-of-trifocal-intraocular-lenses
#13
Kristin Nistad, Frida Göransson, Eivind Støle, Hossein Shams, Björn Gjerdrum
PURPOSE: To determine whether use of a capsular tension ring (CTR) can increase refractive stability in patients with implantation of two different trifocal intraocular lenses (IOLs). METHODS: A prospective, consecutive series of eyes underwent refractive lens exchange with implantation of two different trifocal IOL designs: FineVision Micro F (non-toric) and FineVision POD FT (toric) (PhysIOL, Liege, Belgium). Power calculation was determined using the Haigis formula...
December 1, 2017: Journal of Refractive Surgery
https://www.readbyqxmd.com/read/29227506/comparison-of-methodologies-using-estimated-or-measured-values-of-total-corneal-astigmatism-for-toric-intraocular-lens-power-calculation
#14
Tiago B Ferreira, Paulo Ribeiro, Filomena J Ribeiro, João G O'Neill
PURPOSE: To compare the prediction error in the calculation of toric intraocular lenses (IOLs) associated with methods that estimate the power of the posterior corneal surface (ie, Barrett toric calculator and Abulafia-Koch formula) with that of methods that consider real measures obtained using Scheimpflug imaging: a software that uses vectorial calculation (Panacea toric calculator: http://www.panaceaiolandtoriccalculator.com) and a ray tracing software (PhacoOptics, Aarhus Nord, Denmark)...
December 1, 2017: Journal of Refractive Surgery
https://www.readbyqxmd.com/read/29223230/depth-of-focus-after-implantation-of-spherical-or-aspheric-intraocular-lenses-in-hyperopic-and-emmetropic-patients
#15
Gernot Steinwender, Sanja Strini, Wilfried Glatz, Gerold Schwantzer, Bertram Vidic, Oliver Findl, Andreas Wedrich, Navid Ardjomand
PURPOSE: To evaluate whether hyperopic patients with short axial length and high dioptric intraocular lens (IOL) power can achieve a higher depth of focus after implantation of a monofocal spherical or aspheric IOL than emmetropic patients. SETTING: Department of Ophthalmology, Medical University Graz, Graz, Austria. DESIGN: Prospective case series. METHODS: Patients presenting for cataract surgery were divided by calculated IOL power into a hyperopic (≥22...
November 2017: Journal of Cataract and Refractive Surgery
https://www.readbyqxmd.com/read/29216854/acute-clouding-of-trifocal-lens-during-implantation-a-case-report
#16
Qian Liu, Suhua Zhang, Xiaogang Wang, Weifang Cao, Yading Jia
BACKGROUND: Intraoperative IOLs clouding of several kinds of hydrophilic acrylic intraocular lenses (IOLs) have been reported due to temperature changes. This phenomenon reported previously occurred in cold countries and during the winter months. However, no clinical case was reported about trifocal IOL opacification during operation. We report a case in which acute opacification of the optical region occurred simultaneously when AT LISA tri 839mp(Carl Zeiss) was implanted into the eye...
December 8, 2017: BMC Ophthalmology
https://www.readbyqxmd.com/read/29214074/tilt-decentration-and-internal-higher-order-aberrations-of-sutured-posterior-chamber-intraocular-lenses-in-patients-with-open-globe-injuries
#17
Xiangjia Zhu, Yinglei Zhang, Wenwen He, Hongfei Ye, Chunhui Jiang, Yi Lu
Purpose: To evaluate the tilt, decentration, and internal higher-order aberrations (HOAs) of sutured posterior-chamber intraocular lenses (IOLs) in patients with open globe injuries. Methods: 46 consecutive patients (47 eyes) who underwent transsclerally sutured IOL implantation were enrolled in this prospective cohort study. Nineteen eyes had a history of open globe injury. The tilt and decentration of the IOLs and the visual quality were measured 1 month after surgery...
2017: Journal of Ophthalmology
https://www.readbyqxmd.com/read/29208832/comparison-of-visual-performance-and-after-cataract-formation-between-two-monofocal-aspheric-intraocular-lenses-following-phacoemulsification-for-senile-cataract-a-randomized-controlled-study
#18
Shikha Yadav, Pranita Sahay, Prafulla K Maharana, Jeewan S Titiyal, Rasik B Vajpayee, Namrata Sharma
PURPOSE: Monofocal aspheric intraocular lenses (IOLs) provide better visual outcome compared to other available IOLs following cataract surgery. However, the imported IOLs are expensive and are not affordable by all subset of patients in low- to middle-income countries like India. The aim of this study is to compare the safety and efficacy of a relatively low cost indigenous IOL (Acriol EC) with an imported aspheric IOL (AcrySof IQ). METHODS: A randomized controlled trial was conducted at a tertiary care centre...
December 2017: Indian Journal of Ophthalmology
https://www.readbyqxmd.com/read/29208828/a-simple-technique-of-intraocular-lenses-explantation-for-single-piece-foldable-lenses
#19
Arup Bhaumik, Santanu Mitra
Foldable intraocular lenses (IOLs) are most commonly used in modern-day cataract surgery. Explantation of these IOLs is not frequently encountered, but sometimes extreme situations may demand the same. Commonly explantation is achieved by bisecting the IOL inside the anterior chamber with a cutter and delivering the pieces out one by one. This may require corneal wound extension with associated damage and endothelial loss leading to visual deterioration. We devised a simple, innovative IOL explantation technique utilizing a modified Alcon A cartridge and snare...
December 2017: Indian Journal of Ophthalmology
https://www.readbyqxmd.com/read/29208827/optimizing-optical-outcomes-of-intraocular-lens-implantation-by-achieving-centration-on-visual-axis
#20
Prakhyat Roop
In existing designs of intraocular lenses (IOLs), optical outcomes are compromised even after perfectly executed surgery. The reason for this is misalignment of optical axis of the eye and its visual axis. There is a need to design an IOL which compensates for this misalignment and hence enhances the optical outcomes of cataract surgery. The present innovation attempts to fulfill this unmet need and optimizes optical outcomes of all IOLs of different optical profiles - spherical, aspheric, toric, and multifocal...
December 2017: Indian Journal of Ophthalmology
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