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Intraocular lens

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https://www.readbyqxmd.com/read/28820166/commentary-comprehending-haptic-exteriorization-in-intrascleral-haptic-fixation-of-an-intraocular-lens
#1
Priya Narang
No abstract text is available yet for this article.
August 2017: Indian Journal of Ophthalmology
https://www.readbyqxmd.com/read/28820165/extraocular-needle-guided-haptic-insertion-technique-of-scleral-fixation-intraocular-lens-surgeries-x-nit
#2
Prabu Baskaran, Pratyusha Ganne, Sahil Bhandari, Seema Ramakrishnan, Rengaraj Venkatesh, Prashant Gireesh
The most challenging step in sutureless scleral fixation of intraocular lens (SFIOL) is exteriorization of haptics. The conventional handshake technique has a learning curve since it involves intraocular handing over of haptics from one forceps to another. Here, we describe "extraocular needle-guided haptic insertion technique" (X-NIT), a novel technique of exteriorizing haptics that totally eliminates intraocular manipulations. This method involves sequential introduction of two bent 26-gauge needles through the sclera (pars plicata zone) into the eye which are brought out through a sclerocorneal wound...
August 2017: Indian Journal of Ophthalmology
https://www.readbyqxmd.com/read/28820154/preliminary-validation-of-an-optimized-algorithm-for-intraocular-lens-power-calculation-in-keratoconus
#3
Vicente J Camps, David P Piñero, Esteban Caravaca, Dolores De Fez
PURPOSE: This study aimed to evaluate the theoretical influence on intraocular lens power (PIOL) calculation of the use of keratometric approach for corneal power (Pc) calculation in keratoconus and to develop and validate an algorithm preliminarily to minimize this influence. METHODS: Pcwas calculated theoretically with the classical keratometric approach, the Gaussian equation, and the keratometric approach using a variable keratometric index (nkadj) dependent on r1c(Pkadj)...
August 2017: Indian Journal of Ophthalmology
https://www.readbyqxmd.com/read/28820148/optical-models-for-intraocular-lens-planning-in-keratoconus-a-step-in-the-right-direction-and-more-to-do
#4
EDITORIAL
Rohit Shetty, Abhijit Sinha Roy
No abstract text is available yet for this article.
August 2017: Indian Journal of Ophthalmology
https://www.readbyqxmd.com/read/28819785/assessment-of-the-safety-and-efficacy-of-primary-retropupillary-fixation-of-iris-claw-intraocular-lenses-in-children-with-large-lens-subluxations
#5
Anju Rastogi, Apurva Goray, Prolima Thacker, Kamlesh, Babita
PURPOSE: To evaluate whether retropupillary fixation of the iris-claw intraocular lens (IOL) is a safe and effective treatment option in children with large lens subluxations. METHODS: Fourteen eyes of children between the ages of 8-17 years with lens subluxations more than 7 clock hours underwent pars plana lensectomy-vitrectomy with implantation of the iris-claw IOL in the retropupillary position as a primary procedure. The best corrected visual acuity (BCVA), intraocular pressure (IOP), corneal endothelial count (EC) and the lens position using ultrasound biomicroscopy (UBM) were assessed pre- and postoperatively...
August 17, 2017: International Ophthalmology
https://www.readbyqxmd.com/read/28814826/comparison-between-bilateral-implantation-of-a-trifocal-intraocular-lens-and-blended-implantation-of-two-bifocal-intraocular-lenses
#6
César Vilar, Wilson Takashi Hida, André Lins de Medeiros, Klayny Rafaella Pereira Magalhães, Patrick Frensel de Moraes Tzelikis, Mario Augusto Pereira Dias Chaves, Antônio Francisco Pimenta Motta, Pedro Carlos Carricondo, Milton Ruiz Alves, Walton Nosé
PURPOSE: To compare visual outcomes and performance between bilateral implantation of a diffractive trifocal intraocular lens (IOL) Acrysof(®)PanOptix(®) TFNT00 and blended implantation of two different near add power bifocal IOLs: Acrysof(®) Restor(®) SV25T0 in dominant eye and Acrysof(®) Restor(®) SN6AD1 in the nondominant eye. METHODS: This prospective, nonrandomized, consecutive and comparative study assessed 20 patients (40 eyes) who had bilateral cataract surgery performed using the IOLs described...
2017: Clinical Ophthalmology
https://www.readbyqxmd.com/read/28814824/cataract-surgery-in-patients-with-pseudoex-foliation-syndrome-current-updates
#7
REVIEW
Luigi Fontana, Marco Coassin, Alfonso Iovieno, Antonio Moramarco, Luca Cimino
Pseudoexfoliation is a ubiquitous syndrome of multifactorial origin affecting elderly people by increasing the risk of cataract and secondary glaucoma development. Despite modern techniques and technologies for cataract surgery, pseudoexfoliation syndrome represents a challenge for surgeons because of the increased weakness of the zonular apparatus and limited pupil dilation. Due to the inherent difficulties during surgery, the risk of vitreous loss in these patients is several times higher than in cataract patients without pseudoexfoliation...
2017: Clinical Ophthalmology
https://www.readbyqxmd.com/read/28811796/visual-outcome-after-phacoemulsification-with-lens-implant-in-diabetic-and-non-diabetic-patients-a-comparative-study
#8
Abdul Rashid Shaikh, Abdul Haleem Mirani, Muhammad Saleh Memon, Muhammad Faisal Fahim
OBJECTIVE: To compare the visual outcomes of phacoemulsification surgery with intraocular lens (IOL) in persons with and without diabetes at end of follow-up. METHODS: This was a comparative, cross sectional, observational study with Non-probability, purposive sampling. After approval from "Research Ethical Committee of Isra Post-graduate Institute of Ophthalmology Karachi, 92 patients with cataract in one eye were selected. Patients were divided into two groups...
May 2017: Pakistan Journal of Medical Sciences Quarterly
https://www.readbyqxmd.com/read/28803418/clinical-results-after-microincision-biaxial-cataract-surgery-and-implantation-of-an-incise-intraocular-lens
#9
Wojciech Lubiński, Marta Kirkiewicz, Karolina Podborączyńska-Jodko
PURPOSE: To evaluate clinical outcomes after uncomplicated microincision biaxial cataract surgery and implantation of Incise intraocular lens (IOL). METHODS: This study included 47 eyes of 29 patients (mean age 62.2 ± 8.6 years), who underwent 1.4-mm biaxial cataract surgery with implantation of the Incise IOL (Bausch and Lomb). At third month, surgically induced astigmatism (SIA) was calculated. Three, 6 and 12 months postoperatively, uncorrected distance visual acuity (UDVA), corrected distance visual acuity (CDVA), corrected near visual acuity (CNVA) LogMAR ETDRS, spherical equivalent refraction (SER), photopic distance corrected contrast sensitivity (CS) with and without glare (85 cd/m(2)) (CSV-1000) were assessed...
August 12, 2017: International Ophthalmology
https://www.readbyqxmd.com/read/28802684/-management-of-post-traumatic-aphakia-and-aniridia-retrospective-study-of-17-patients-undergoing-scleral-sutured-artificial-iris-intraocular-lens-implantation-management-of-aphakia-aniridia-with-scleral-sutured-artificial-iris-intraocular-lenses
#10
A-S Villemont, V Kocaba, H Janin-Manificat, L Abouaf, M Poli, A-S Marty, M Rabilloud, J Fleury, C Burillon
PURPOSE: To evaluate the long-term outcomes of artificial iris intraocular lenses sutured to the sclera for managing traumatic aphakia and aniridia. METHODS: All consecutive cases receiving a Morcher(®) combination implant from June 2008 to February 2016 in Edouard-Herriot Hospital (Lyon, France) were included in this single-center retrospective study. Visual acuity, subjective degree of glare, quality of life and surgical complications were evaluated. RESULTS: Seventeen eyes of 17 patients were included, among which 82% were male...
August 9, 2017: Journal Français D'ophtalmologie
https://www.readbyqxmd.com/read/28801741/scleral-suture-fixation-technique-for-dislocated-plate-haptic-toric-iol
#11
Remzi Karadag, Bahar Gunes, Veysel Aykut, Halit Oguz, Ahmet Demirok
Purpose We describe a scleral suture fixation technique for dislocated plate haptic toric intraocular lens (IOL) implantation. Materials and methods A double-armed 10-0 straight polypropylene suture was passed into the eye from the sclera (2 mm away from the limbus). A suture needle was passed through the hole on the corner of the IOL and pulled out from the paracentesis with a 27-gauge needle. Afterward, the suture needle was reinserted from the same paracentesis and then removed from the eye with the help of a 27-gauge needle entering the eye from a nearby point to the first scleral entrance...
August 11, 2017: International Ophthalmology
https://www.readbyqxmd.com/read/28800656/-interpretation-of-the-intraocular-lens-constants-for-the-haigis-formula
#12
Simon Schröder, Stefan Wagenpfeil, Christina Leydolt, Rupert Menapace, Achim Langenbucher
Background The Haigis formula uses a linear regression with three IOL constants for the prediction of the effective lens position (ELP) of the intraocular lens (IOL), ELP ≈ a0 + a1 ACD + a2 L. It is based on the preoperative anterior chamber depth (ACD) and axial length (L). Material and Methods Differences between IOL constant triplets can be judged based on their statistical measurement uncertainty. To investigate, if the estimation of the average ELP with the help of the average ACD and average L according to 〈ELP〉 ≈ a0 + a1 〈ACD〉 + a2 〈L〉 provides a possible alternative, we have compared both methods...
August 2017: Klinische Monatsblätter Für Augenheilkunde
https://www.readbyqxmd.com/read/28800647/effects-of-vitrectomy-and-lensectomy-on-older-rhesus-macaques-oxygen-distribution-antioxidant-status-and-aqueous-humor-dynamics
#13
Carla J Siegfried, Ying-Bo Shui, Baohe Tian, T Michael Nork, Gregg A Heatley, Paul L Kaufman
Purpose: The purpose of this study is to evaluate effects of vitrectomy (PPV) and lens extraction with intraocular lens implantation (PE/IOL) on molecular oxygen (pO2) distribution, aqueous humor antioxidant-oxidant balance, aqueous humor dynamics, and histopathologic changes in the trabecular meshwork (TM) in the older macaque monkey. Methods: Six rhesus monkeys underwent PPV followed by PE/IOL. pO2, outflow facility, and intraocular pressure (IOP) were measured...
August 1, 2017: Investigative Ophthalmology & Visual Science
https://www.readbyqxmd.com/read/28799565/modified-technique-of-endocapsular-lens-aspiration-for-severely-subluxated-lenses
#14
S Khokhar, N Aron, N Yadav, G Pillay, E Agarwal
PurposeSeverely subluxated crystalline lenses pose a difficult situation to anterior segment surgeons and can only be managed surgically by removal of the lens as well as the capsular bag. Several techniques have been described in literature for the management of such cases. We describe a modified technique of endocapsular lens aspiration by the limbal route for lens extraction through small incisions on the cornea.Patients and methodsThirty-two eyes of 16 consecutive patients with severely subluxated crystalline lenses were recruited in the study...
August 11, 2017: Eye
https://www.readbyqxmd.com/read/28797085/comparison-of-cytokine-profiles-in-the-aqueous-humor-of-eyes-with-pseudoexfoliation-syndrome-and-glaucoma
#15
Justus G Garweg, Souska Zandi, Isabel B Pfister, Magdalena Skowronska, Christin Gerhardt
PURPOSE: To compare the cyto- and chemokine profiles in the aqueous humor of PEXS eyes in the absence or presence of secondary glaucoma with or without luxation of the intraocular lens (IOL). METHODS: Samples of aqueous humor were collected intraoperatively from 20 healthy controls and from 73 eyes with PEX-syndrome, which was manifested in the absence of any other local or systemic desease. The latter group was sub-devided into eyes with an early form of PEX-syndrome in the absence of complications (PEX, n = 33), those with a late form of PEX-syndrome and glaucoma (PEXG, n = 30), and those with a late form of PEX-syndrome with luxation of the IOL that required surgery (PEXL, n = 10)...
2017: PloS One
https://www.readbyqxmd.com/read/28795358/psychophysical-measurements-of-luminance-contrast-sensitivity-and-color-discrimination-with-transparent-and-blue-light-filter-intraocular-lenses
#16
Marcelo Fernandes da Costa, Augusto Paranhos Júnior, Claudio Luiz Lottenberg, Leonardo Cunha Castro, Dora Fix Ventura
INTRODUCTION: The purpose of this study was to measure luminance contrast sensitivity and color vision thresholdfs in normal subjects using a blue light filter lens and transparent intraocular lens material. METHODS: Monocular luminance grating contrast sensitivity was measured with Psycho for Windows (version 2.36; Cambridge Research Systems) at 3.0, 6.0, 12.0, 20.0, and 30.0 cycles per degree of visual angle (cpd) in 15 normal subjects (eight female), with a mean age of 21...
August 9, 2017: Ophthalmology and Therapy
https://www.readbyqxmd.com/read/28792434/collective-migration-of-lens-epithelial-cell-induced-by-differential-microscale-groove-patterns
#17
Chunga Kwon, Youngjun Kim, Hojeong Jeon
Herein, a micro-patterned cell adhesive surface is prepared for the future design of medical devices. One-dimensional polydimethylsiloxane (PDMS) micro patterns were prepared by a photolithography process. We investigated the effect of microscale topographical patterned surfaces on decreasing the collective cell migration rate. PDMS substrates were prepared through soft lithography using Si molds fabricated by photolithography. Afterwards, we observed the collective cell migration of human lens epithelial cells (B-3) on various groove/ridge patterns and evaluated the migration rate to determine the pattern most effective in slowing down the cell sheet spreading speed...
August 9, 2017: Journal of Functional Biomaterials
https://www.readbyqxmd.com/read/28791060/outcome-of-single-piece-intraocular-lens-sulcus-implantation-following-posterior-capsular-rupture-during-phacoemulsification
#18
Masomeh Mohebbi, Seyed Ali Bashiri, Seyed Farzad Mohammadi, Behnaz Samet, Fariba Ghassemi, Elham Ashrafi, Fatemeh Bazvand
PURPOSE: To assess the safety and outcome of single-piece posterior chamber intraocular lens (PC-IOL) implantation in the ciliary sulcus following posterior capsular rupture during cataract surgery. METHODS: Patients with posterior capsular rupture during cataract surgery with a single-piece acrylic IOL implanted into the ciliary sulcus were studied. Complete ocular examinations were performed after 6 months postoperatively. RESULTS: Twenty-four eyes were included...
July 2017: Journal of Ophthalmic & Vision Research
https://www.readbyqxmd.com/read/28790805/bilateral-implantation-of-3-0-d-multifocal-toric-intraocular-lenses-results-of-a-us-food-and-drug-administration-clinical-trial
#19
Robert Lehmann, Satish Modi, Bret Fisher, Magda Michna, Michael Snyder
PURPOSE: The purpose of this study was to evaluate the clinical outcomes of apodized diffractive +3.0 D multifocal toric intraocular lens (IOL) implantations in subjects with preoperative corneal astigmatism. PATIENTS AND METHODS: This was a prospective cohort study conducted at 21 US sites. The study population consisted of 574 subjects, aged ≥21 years, with preoperative astigmatism 0.75-2.82 D, and potential postoperative visual acuity (VA) ≥0.2 logMAR, undergoing bilateral cataract removal by phacoemulsification...
2017: Clinical Ophthalmology
https://www.readbyqxmd.com/read/28790537/refractive-outcomes-of-posterior-chamber-phakic-intraocular-lens-implantation-for-correction-of-myopia-and-myopic-astigmatism
#20
Melisa Ahmedbegovic Pjano, Ajla Pidro, Alma Biscevic, Senad Grisevic, Bojana Pandzic, Vesna Cerovic
OBJECTIVES: The aim was to examine efficacy and safety after Implantable Collamer Lens (ICL) implantation for correction of myopia et myopic astigmatism. METHODS: This prospective clinical study included 28 eyes of 16 patients which underwent implantation of ICL for correction of myopia up to -18,00 diopters (D) and myopic astigmatism up to -6,00 D in the Eye Clinic Svjetlost Sarajevo, from January 2013 to January 2016. Uncorrected distance visual acuity (UDVA), spherical equivalent (SE), corrected distance visual acuity (CDVA), intraocular pressure (IOP), endothelial cell (EC) density were evaluated at one, six and twelve months...
April 2017: Medical Archives
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