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Surgical technique cataract

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https://www.readbyqxmd.com/read/29776352/surgical-peripheral-iridectomy-via-a-clear-cornea-phacoemulsification-incision-for-pupillary-block-following-cataract-surgery-in-acute-angle-closure
#1
Aiwu Fang, Peijuan Wang, Rui He, Jia Qu
BACKGROUND: To describe a technique of surgical peripheral iridectomy via a clear-cornea tunnel incision to prevent or treat pupillary block following phacoemulsification. METHODS: Description of technique and retrospective description results in 20 eyes of 20 patients with acute angle closure with coexisting visually significant cataract undergoing phacoemulsification considered at risk of postoperative papillary block as well as two pseudo-phakic eyes with acute postoperative pupillary-block...
May 18, 2018: BMC Ophthalmology
https://www.readbyqxmd.com/read/29699518/comparison-of-two-techniques-for-toric-intraocular-lens-implantation-hydroimplantation-versus-ophthalmic-viscosurgical-devices
#2
Yueqin Chen, Qian Cao, Chunyan Xue, Zhenping Huang
BACKGROUND: To compare the results between hydroimplantation of a single-piece, acrylic foldable toric intraocular lens (IOLs) and conventional implantation using an ophthalmic viscosurgical device (OVD). METHODS: In this study, 60 eyes with cataract and preexisting regular corneal astigmatism of 1.0 to 3.0 diopters (D) underwent the implantation of the AcrySof toric IOLs (Alcon Laboratories, Inc.). The patients were randomly assigned to a conventional implantation technique with an OVD or a hydroimplantation technique...
April 24, 2018: BMC Ophthalmology
https://www.readbyqxmd.com/read/29668525/primary-core-vitrectomy-technique-before-cataract-surgery-in-combined-phacovitrectomy-for-eyes-with-dense-vitreous-hemorrhages
#3
Kyung Sup Shin, Hyung Bin Lim, Yong Il Shin, Seong Eun Lee, Young Joon Jo, Jung Yeul Kim
PURPOSE: To investigate the efficacy and safety of a primary core vitrectomy technique for combined phacovitrectomy in eyes showing a poor red reflex because of dense vitreous hemorrhage before cataract surgery. METHODS: A total of 156 eyes from 156 patients, who underwent combined phacovitrectomy because of cataract and dense vitreous hemorrhage, and who were followed up for at least 6 months were included. The patients were divided into a primary phacoemulsification group (Group A, 80 eyes) who underwent phacoemulsification first followed by total vitrectomy and a primary vitrectomy group (Group B, 76 eyes) who underwent core vitrectomy first followed by cataract surgery and followed by total vitrectomy...
April 17, 2018: Retina
https://www.readbyqxmd.com/read/29605281/simultaneous-pupil-expansion-and-displacement-for-femtosecond-laser-assisted-cataract-surgery-in-patients-with-lens-ectopia
#4
Boris Malyugin, Natalia Anisimova, Olga Antonova, Lisa B Arbisser
We describe a new approach for cataract surgery in ectopia lentis associated with an inadequately dilated pupil. A Malyugin ring 2.0 is first positioned in the eye to expand the pupil. One of the ring coils is then temporarily sutured to the limbal area with 10-0 polypropylene. With this maneuver, the pupillary expansion ring is placed in alignment with the center of the ectopic lens. Femtosecond laser anterior capsulotomy and lens fragmentation is then performed. Next, the temporary suture is released, a capsular hook(s) is placed to support the lens, and the lens is emulsified...
March 28, 2018: Journal of Cataract and Refractive Surgery
https://www.readbyqxmd.com/read/29569057/-mechanical-pupillary-dilatation-using-rings-in-small-pupils-during-cataract-surgery-video-article
#5
REVIEW
C Wirbelauer, S Schmidt, C Puk
OBJECTIVE: The purpose of mechanical pupillary dilatation in small pupils is a sufficient visualization of the lens to be able to perform capsulorhexis, phacoemulsification and intraocular lens implantation. INDICATIONS: The indications for mechanical dilatation are fulfilled in patients where a sufficient pharmacological preoperative pupil dilatation is not possible. SURGICAL TECHNIQUE: During routine cataract surgery specific foldable rings can be employed to dilate the pupil with the appropriate injector under viscoelastic substances...
March 22, 2018: Der Ophthalmologe: Zeitschrift der Deutschen Ophthalmologischen Gesellschaft
https://www.readbyqxmd.com/read/29564919/comparing-surgically-induced-astigmatism-calculated-by-means-of-simulated-keratometry-versus-total-corneal-refractive-power
#6
Nuria Garzón, Manuel Rodríguez-Vallejo, David Carmona, Jorge A Calvo-Sanz, Francisco Poyales, Carlos Palomino, Miguel Á Zato-Gómez de Liaño, Joaquín Fernández
PURPOSE: To evaluate surgically induced astigmatism as computed by means of either simulated keratometry (KSIM ) or total corneal refractive power (TCRP) after temporal incisions. METHODS: Prospective observational study including 36 right eyes undergoing cataract surgery. Astigmatism was measured preoperatively during the 3-month follow-up period using Pentacam. Surgically induced astigmatism was computed considering anterior corneal surface astigmatism at 3 mm with KSIM and considering both corneal surfaces with TCRP from 1 to 8 mm (TCRP3 for 3 mm)...
March 1, 2018: European Journal of Ophthalmology
https://www.readbyqxmd.com/read/29564359/femtosecond-laser-assisted-astigmatic-keratotomy-a-review
#7
REVIEW
John S M Chang
Background: Astigmatic keratotomy (AK) remains an accessible means to correct surgically induced or naturally occurring astigmatism. The advantages of femtosecond laser-assisted astigmatic keratotomy (FSAK) over conventional methods have been recognized recently. Main text: This review evaluates the efficacy, complications, and different methods of FSAK for correction of astigmatism in native eyes and those that underwent previous penetrating keratoplasty (PKP)...
2018: Eye and Vision (London, England)
https://www.readbyqxmd.com/read/29544960/comparison-of-the-rotational-stability-of-two-toric-intraocular-lenses-in-1273-consecutive-eyes
#8
Bryan S Lee, David F Chang
PURPOSE: To compare the rotational stability of the 2 most commonly used toric intraocular lenses (TIOLs). DESIGN: Retrospective cohort study in a single private practice. SUBJECTS: The study included all patients receiving an Acrysof (n = 626) or Tecnis TIOL (n = 647) over an 18-month period from April 2015 to September 2016. Patients were only excluded if their surgery could not be performed using a digital marking system. METHODS: All patients had cataract surgery performed in the same surgical center with a similar technique...
March 12, 2018: Ophthalmology
https://www.readbyqxmd.com/read/29474298/descemet-membrane-endothelial-keratoplasty-for-failed-deep-anterior-lamellar-keratoplasty-a-case-series
#9
Adi Einan-Lifshitz, Nir Sorkin, Tanguy Boutin, Zale Mednick, Mohammad Kreimei, Clara C Chan, David S Rootman
PURPOSE: To suggest a new surgical approach for posterior opacities or persistent Descemet membrane (DM) detachment in failed deep anterior lamellar keratoplasty (DALK) and to report the outcome of Descemet membrane endothelial keratoplasty (DMEK) in a series of patients with DALK failure. METHODS: In this retrospective case series of patients who underwent DMEK for failed DALK at Toronto Western Hospital, 4 patients with failed DALK who underwent DMEK surgery were included...
June 2018: Cornea
https://www.readbyqxmd.com/read/29463862/intraoperative-head-drift-and-eye-movement-two-under-addressed-challenges-during-cataract-surgery
#10
Kerr Brogan, Basu Dawar, David Lockington, Kanna Ramaesh
PURPOSE: To objectively measure head drift during cataract surgery, and subjectively simulate eye movements and assess impact on surgical technique. MATERIALS AND METHODS: Twelve consecutively recorded routine cataract operations in the Tennent Institute of Ophthalmology, Gartnavel General Hospital, Glasgow, were reviewed. The speculum was used as a fixed point and correlated with a superimposed virtual ruler to measure maximum head drift in each direction throughout the operations...
February 21, 2018: Eye
https://www.readbyqxmd.com/read/29450392/glaucoma-after-penetrating-keratoplasty
#11
REVIEW
Mihail Zemba, Alina-Cristina Stamate
Penetrating keratoplasty is a surgical intervention that despite the progress of surgical techniques and of postoperative treatment continues to have numerous complications. Many of them, such as graft rejection, significant astigmatism, cystoid macular edema, or cataract lead to important limitations of the visual function. Glaucoma is possibly the most dangerous complication following PK, leading to loss of the visual potential of the eye due to irreversible damage to the optic nerve. Identifying the risk factors permits an attentive follow-up and rapid treatment of the postoperative IOP rises...
July 2017: Romanian Journal of Ophthalmology
https://www.readbyqxmd.com/read/29426441/surgical-outcomes-and-complications-of-sutured-scleral-fixated-intraocular-lenses-in-pediatric-eyes
#12
Parveen Sen, Vinay Kumar S, Pramod Bhende, Pukhraj Rishi, Ekta Rishi, Chetan Rao, Dhanashree Ratra, Pradeep Susvar, Sreelakshmi Kummamuri, Sufiyan Shaikh, Lingam Gopal
OBJECTIVE: To study the outcome and complications of sutured scleral fixated intraocular lenses (SSFIOL) in children. DESIGN: Retrospective study. SUBJECTS: A total of 279 eyes of 230 children who underwent SSFIOL at ≤18 years of age in a tertiary eye care centre in India. METHODS: Treatment-naive children having traumatic cataract or subluxated lens underwent a single-sitting lensectomy and pars plana vitrectomy (PPV), along with SSFIOL insertion...
February 2018: Canadian Journal of Ophthalmology. Journal Canadien D'ophtalmologie
https://www.readbyqxmd.com/read/29417443/the-outcomes-of-subtotal-vitrectomy-in-macular-surgeries-a-single-surgeon-case-series
#13
Abdullah Ozkaya, Gurkan Erdogan, Beril Tulu, Hatice Nur Tarakcioglu
PURPOSE: To investigate the outcomes of subtotal vitrectomy in epiretinal membrane (ERM) and idiopathic macular hole (IMH) surgeries. METHODS: The patients who underwent vitrectomy for primary ERM and IMH were included. After the truncation of posterior hyaloid, cortical vitreous was incompletely removed and anterior vitreous was left in place. The main outcome measure was the complications of the surgical technique during the postoperative 12 months of follow-up...
February 7, 2018: International Ophthalmology
https://www.readbyqxmd.com/read/29411508/sub-tenon-s-anesthesia-for-canine-cataract-surgery
#14
Kellam D Bayley, R A Read
OBJECTIVE: To test a sub-Tenon's anesthesia technique in dogs as an alternative to systemic neuromuscular blockade to aid in canine cataract surgery under general anesthesia. PROCEDURES: A prospective controlled clinical study was performed involving 12 dogs undergoing bilateral cataract surgery under general anesthesia. One eye was randomly assigned to have phacoemulsification and prosthetic lens implantation performed with sub-Tenon's anesthesia (STA), and the control eye had surgery performed with systemic neuromuscular blockade (NMB)...
February 6, 2018: Veterinary Ophthalmology
https://www.readbyqxmd.com/read/29411487/technique-postoperative-complications-and-visual-outcomes-of-phacoemulsification-cataract-surgery-in-21-penguins-27-eyes-2011-2015
#15
Melanie L Church, Daniel R Priehs, Heidi Denis, Lara Croft, Stacy DiRocco, Michelle Davis
OBJECTIVE: To describe surgical technique, postoperative complications, and visual outcome in penguins after phacoemulsification lens extraction surgery. ANIMALS STUDIED: Twenty-one penguins (27 eyes) that had phacoemulsification from 2011 to 2015 at Animal Eye Associates. Species included are as follows: 14 southern Rockhopper (18 eyes, 66.6%), 4 Gentoo (4 eyes, 19%), 2 King (3 eyes, 9.5%), and 1 Chinstrap penguin (2 eyes, 4.8%). Eleven of the penguins were females, and 10 were males with average age at the time of surgery being 27...
February 6, 2018: Veterinary Ophthalmology
https://www.readbyqxmd.com/read/29389077/nitinol-basket-assisted-pars-plana-vitrectomy-for-retained-lens-material-removal
#16
Danilo Iannetta, Leonore Engelbrecht, Marco Mura
PURPOSE: To evaluate the usefulness of different types of nitinol baskets to capture, lift and hold the lens material, dropped during a complicated phacoemulsification, as an adjunctive surgical tool in vitreoretinal surgery and to evaluate the outcomes and complication of this new surgical technique in a small series of patients. METHODS: Patients who underwent pars plana vitrectomy (PPV) for retained lens fragments operated during December 2014 and March 2015 at the Academic Medical Center (AMC), Amsterdam, were included in this study...
February 1, 2018: Acta Ophthalmologica
https://www.readbyqxmd.com/read/29364503/surgery-for-postvitrectomy-cataract
#17
REVIEW
Diana V Do, Stephen Gichuhi, Satyanarayana S Vedula, Barbara S Hawkins
BACKGROUND: Cataract formation or acceleration can occur after intraocular surgery, especially following vitrectomy, a surgical technique for removing the vitreous that is used in the treatment of many disorders that affect the posterior segment of the eye. The underlying problem that led to vitrectomy may limit the benefit from removal of the cataractous lens. OBJECTIVES: To evaluate the effectiveness and safety of surgery versus no surgery for postvitrectomy cataract with respect to visual acuity, quality of life, and other outcomes...
January 10, 2018: Cochrane Database of Systematic Reviews
https://www.readbyqxmd.com/read/29339920/microhook-ab-interno-trabeculotomy-a-novel-minimally-invasive-glaucoma-surgery
#18
Masaki Tanito
Trabeculotomy (LOT) is performed to reduce the intraocular pressure in patients with glaucoma, both in children and adults. It relieves the resistance to aqueous flow by cleaving the trabecular meshwork and the inner walls of Schlemm's canal. Microhook ab interno LOT (µLOT), a novel minimally invasive glaucoma surgery, incises trabecular meshwork using small hooks that are inserted through corneal side ports. An initial case series reported that both µLOT alone and combination of µLOT and cataract surgery normalize the intraocular pressure during the early postoperative period in Japanese patients with glaucoma...
2018: Clinical Ophthalmology
https://www.readbyqxmd.com/read/29290152/professor-samuel-david-gross-1805-1884-and-his-innovations-in-surgery-and-medicine
#19
Konstantinos Laios
Professor Samuel David Gross (1805-1884) is considered as one of the founders of American surgery. He was a skillful surgeon who could excellently perform a lithotomy, an amputation, and a cataract surgery. He introduced many new surgical techniques and designed new surgical and medical instruments. He expertise was not limited to surgery alone; he also published studies concerning internal medicine, pathology, experimental physiology, and pharmacology. His most important treatise was his 2-volume work, A System of Surgery, Pathological, Diagnostic, Therapeutic and Operative (1861), which was a standard reference book in surgery in the United States during the second half of 19th century...
December 1, 2017: Surgical Innovation
https://www.readbyqxmd.com/read/29274987/anterior-capsulorhexis-opening-reduction-after-cataract-surgery-with-subluxated-lenses
#20
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 2017: Medicina
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