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Rafael Bilbao-Calabuig, Felix González-López, Ferrer Amparo, Gemma Alvarez, Sunni R Patel, Fernando Llovet-Osuna
PURPOSE: To investigate the visual outcomes between mix-and-match bifocal intraocular lenses (IOLs) (ReSTOR +2.50 and +3.00 diopters [D]; Alcon Laboratories, Inc., Fort Worth, TX) versus bilateral implantation of a trifocal IOL (FineVision; PhysIOL, Liège, Belgium). METHODS: Twenty-three patients (average age: 56.3 ± 6.9 years; range: 45 to 71 years) referred for lens phacoemulsification and IOL implantation were included in this study. Patients were randomly assigned to two groups...
October 1, 2016: Journal of Refractive Surgery
Daniel Carson, Zaiwei Xu, Elsinore Alexander, Myoung Choi, Zeyu Zhao, Xin Hong
PURPOSE: To compare the optical performance of 3 trifocal intraocular lenses (IOLs): the Acrysof IQ Panoptix (+2.17 diopter [D]/+3.25 D IOL), AT LISA Tri 839MP (+1.66 D/+3.33 D IOL), and Finevision Micro F (+1.75 D/+3.50 D IOL). SETTING: Alcon Research Ltd., Fort Worth, Texas, USA. DESIGN: Experimental study. METHODS: The 3 trifocal IOLs were compared using optical performance tests. To measure image quality, through-focus modulation transfer function (MTF) curves were generated for a model eye...
September 2016: Journal of Cataract and Refractive Surgery
Petros Charalampoudis, Georgios C Sotiropoulos, Stylianos Kykalos, Paraskevas Stamopoulos, Gregory Kouraklis
Synchronous colorectal cancers (SCRCs) have been increasingly diagnosed due to emerging diagnostic modalities. The presence of three or more synchronous colorectal cancers has, however, only rarely been reported. A 76-year-old white man presented for management of two concurrent colorectal adenocarcinomas in the left colon evidenced on total colonoscopy. Preoperative abdominal ultrasonography and thoracoabdominal computed tomography were negative for metastatic disease. The patient underwent an elective left hemicolectomy...
October 2016: Proceedings of the Baylor University Medical Center
M Brožková, M Filipec, L Filipová, A Holubová, Z Hlinomazová
AIM: The aim of our study was to evaluate the outcome of cataract surgeries with implantation of intraocular trifocal toric lens, and to study the accuracy of astigmatism correction, lens rotational stability, and safety of the procedures. PATIENTS AND METHODS: Our study comprised 22 eyes of 16 patients who underwent unilateral or bilateral implantation of AT LISA tri toric 939MP, or its implantation in combination with AT LISA tri 839MP. Mean patient age was 58 ± 11 years (39 to 75 years)...
2016: Ceská a Slovenská Oftalmologie
Neha Neha, Tulika Tripathi, Sujata Mohanty, Priyank Rai
Because of the high failure rates, large alveolar cleft defects cannot be successfully closed with bone grafting. Vega introduced the use of the hyrax screw for the closure of such defects by distraction osteogenesis. However, his technique was more invasive with a difficult adaptation of the appliance at the surgical table. To overcome these limitations, a completely tooth-borne trifocal distraction appliance was devised and placed after osteotomy in a 22-year-old repaired group 3 cleft patient who had a 15-mm alveolar defect on the right side...
September 16, 2016: Cleft Palate-craniofacial Journal
Jian Chen, Bingxi Jia, Kaixiang Zhang
In this paper, a trifocal tensor-based approach is proposed for the visual trajectory tracking task of a nonholonomic mobile robot equipped with a roughly installed monocular camera. The desired trajectory is expressed by a set of prerecorded images, and the robot is regulated to track the desired trajectory using visual feedback. Trifocal tensor is exploited to obtain the orientation and scaled position information used in the control system, and it works for general scenes owing to the generality of trifocal tensor...
July 1, 2016: IEEE Transactions on Cybernetics
Jose M Martinez-de-la-Casa, Jesús Carballo-Alvarez, Javier Garcia-Bella, Jose M Vazquez-Molini, Laura Morales, Juan C Sanz-Fernandez, Vicente Polo, Julián García-Feijoo
PURPOSE: To assess photopic and mesopic vision in patients implanted with 2 different trifocal intraocular lenses (IOLs). METHODS: Fifty patients with cataract in both eyes had surgery with bilateral implantation of a trifocal FineVision (FV, n = 25) or AT LISA tri 839MP (LisaTri, n = 25) IOL. Three months after surgery, high-contrast photopic uncorrected distance visual acuity and corrected distance visual acuity (CDVA) were determined using the Early Treatment Diabetic Retinopathy Study test...
June 21, 2016: European Journal of Ophthalmology
Shinwook Lee, Myoung Choi, Zaiwei Xu, Zeyu Zhao, Elsinore Alexander, Yueai Liu
PURPOSE: The purpose of this study is to compare the optical characteristics of the novel PanOptix presbyopia-correcting trifocal intraocular lens (IOL) and the multifocal ReSTOR +3.0 D IOL, through in vitro bench investigations. METHODS: The optical characteristics of AcrySof(®) IQ PanOptix™ (PanOptix) and AcrySof(®) IQ ReSTOR +3.0 D (ReSTOR +3.0 D) IOLs were evaluated by through-focus Badal images, simulated headlight images, and modulation transfer function (MTF) measurements which determine resolution, photic phenomena, and image quality...
2016: Clinical Ophthalmology
Francisco Poyales, Nuria Garzón, Jos J Rozema, Concepción Romero, Begoña Ortíz de Zárate
PURPOSE: To compare visual outcomes, rotational stability, and centration in a randomized controlled trial in patients undergoing cataract surgery who were bilaterally implanted with two different trifocal intraocular lenses (IOLs) with a similar optical zone but different haptic shape. METHODS: Twenty-one patients (42 eyes) with cataract and less than 1.50 D of corneal astigmatism underwent implantation of one FineVision/MicoF IOL in one eye and one POD FineVision IOL in the contralateral eye (PhysIOL, Liège, Belgium) at IOA Madrid Innova Ocular, Madrid, Spain...
June 1, 2016: Journal of Refractive Surgery
Yan Wang, Xuanping Huang, Feixin Liang, Nuo Zhou
We report on a case in which trifocal distraction osteogenesis was applied in a patient with a mandibular defect caused by resection of an ossifying fibroma. During the surgical procedure, we accidentally dissected the surrounding periosteal tissue of the left transport completely in the process of transport disc preparation and made the disc into a free bone graft. However, we still used this transport and successfully completed the distraction osteogenesis. The patient's facial and occlusal function were regained after treatment...
September 2016: Journal of Oral and Maxillofacial Surgery
Kjell Gunnar Gundersen, Rick Potvin
PURPOSE: To compare the visual acuity (VA) and quality of vision between bilateral implantation of a trifocal intraocular lens (IOL) and blended bifocal IOLs with an intermediate add in the dominant eye and a near add in the nondominant eye. PATIENTS AND METHODS: Patients with either trifocal or blended bifocal IOLs implanted were recruited after surgery. Subjects returned for a single diagnostic visit between 3 and 24 months after surgery. VA was tested at various distances, including low-contrast acuity and acuity at their preferred reading distance...
2016: Clinical Ophthalmology
Eleni Papadatou, Antonio J Del Águila-Carrasco, José J Esteve-Taboada, David Madrid-Costa, Robert Montés-Micó
PURPOSE: To present a metric for assessing the in vitro optical quality of rotationally symmetrical optical elements based on volume calculation under the surface defined by the axial modulation transfer function (MTF). SETTING: University of Valencia, Valencia, Spain. DESIGN: Experimental study. METHODS: The metric volume under the axial MTF was used to assess the optical quality of 2 rotationally symmetrical multifocal intraocular lenses (IOLs) within various defocus intervals (0...
May 2016: Journal of Cataract and Refractive Surgery
Florian Tobias Alwin Kretz, Chul Young Choi, Matthias Müller, Matthias Gerl, Ralf Helmar Gerl, Gerd Uwe Auffarth
PURPOSE: To evaluate visual outcomes following implantation of a trifocal diffractive intraocular lens (IOL) and to analyze their correlation with patient satisfaction and ease of performing daily tasks. METHODS: This was a prospective study enrolling 100 eyes of 50 patients undergoing cataract surgery with implantation of trifocal IOL AT LISA tri 839MP. Visual and refractive outcomes were evaluated during a 3-month follow-up. Postoperatively, a questionnaire was used to evaluate patient satisfaction with regard to surgical outcome, spectacle independence, perception of photic phenomena, and ease of performing some vision-related activities...
June 2016: Korean Journal of Ophthalmology: KJO
Ana B Plaza-Puche, Jorge L Alio
PURPOSE: To compare the visual performance in patients implanted with different modern multifocal intraocular lens (mfIOL) models using defocus curves. METHODS: This prospective, interventional, comparative, nonrandomized consecutive series of cases included 60 patients (45-87 years) who underwent binocular cataract surgery. Patients were divided into 4 groups depending on the intraocular lens (IOL) implanted after cataract surgery: group A, 15 patients with AT LISA tri 839MP IOL (Carl Zeiss Meditec); group B, 15 patients with FineVision trifocal IOL (PhysIOL); group C, 15 patients with ReSTOR SN6AD1 bifocal IOL (Alcon); and group D, 15 patients with Acri...
August 4, 2016: European Journal of Ophthalmology
Ana B Plaza-Puche, Jorge L Alio, Esperanza Sala, Peter Mojzis
PURPOSE: To investigate the low mesopic contrast sensitivity function (LMCSF) of patients implanted with different modern optical bifocal and trifocal designs of multifocal intraocular lenses (mfIOLs). METHODS: This prospective, comparative, nonrandomized consecutive case series included 180 eyes that underwent cataract surgery. Six groups of eyes were differentiated: group A, eyes with the diffractive AT LISA tri 839MP; group B, eyes with diffractive FineVision; group C, eyes with the bifocal Lentis Mplus-LS313; group D, eyes with the diffractive bifocal Acri...
April 27, 2016: European Journal of Ophthalmology
Damien Gatinel, Jérôme Loicq
PURPOSE: To experimentally compare the optical performance of three types of hydrophobic intraocular lenses (IOLs): extended depth of focus, bifocal, and trifocal. METHODS: The tested IOLs were: TECNIS ZMB00 (bifocal; Abbott Medical Optics, Abbott Park, IL), TECNIS Symfony ZXR00 (extended depth of focus; Abbott Medical Optics), and FineVision GFree hydrophobic (trifocal; PhysIOL, Liège, Belgium). Their surface topography was analyzed by optical microscopy. Modulation transfer function (MTF) and spherical aberrations were determined on optical bench for variable pupil apertures and with two cornea models (0 µm and +0...
April 2016: Journal of Refractive Surgery
Bert C Giers, Ramin Khoramnia, Lea F Weber, Tamer Tandogan, Gerd U Auffarth
We present the case of a 56-year-old woman with moderate myopia and bilateral cataract who had cataract extraction and intraocular lens (IOL) implantation. Due to the patient's desire for spectacle independence, a trifocal IOL with toric correction for astigmatism was implanted. During the follow-up, it became obvious that the implanted IOL had rotated and tilted due to insufficient fixation in the large capsular bag of the myopic eye. An IOL explantation was therefore performed, and the original IOL was exchanged for a bifocal toric IOL with a larger overall diameter...
March 2016: Journal of Cataract and Refractive Surgery
Kjell Gunnar Gundersen, Rick Potvin
PURPOSE: The aim of this study was to compare a new diffractive trifocal toric lens with an apodized diffractive bifocal toric lens in terms of refractive and visual acuity (VA) outcomes, including low-contrast VA (LCVA), as well as the patient's visual function 3 months after implantation. PATIENTS AND METHODS: This is a randomized prospective study involving bilateral implantation of a trifocal toric or a bifocal toric lens. At 3 months postoperatively, the subject's vision was tested both uncorrected and with his/her best distance correction at: distance (4 m), intermediate (63 cm), and near (40 cm)...
2016: Clinical Ophthalmology
Kjell Gunnar Gundersen, Sarah Makari, Steffen Ostenstad, Rick Potvin
PURPOSE: To determine the incidence and etiology of required retreatment after multifocal intraocular lens (IOL) implantation and to evaluate the methods and clinical outcomes of retreatment. PATIENTS AND METHODS: A retrospective chart review of 416 eyes of 209 patients from one site that underwent uncomplicated cataract surgery with multifocal IOL implantation. Biometry, the IOL, and refractive data were recorded after the original implantation, with the same data recorded after retreatment...
2016: Clinical Ophthalmology
Béatrice Cochener
PURPOSE: To compare the visual results and patient satisfaction after bilateral implantation between a bifocal and a trifocal intraocular lens (IOL). METHODS: This study is a prospective, randomized, controlled study involving bilateral implantation of one of two multifocal IOLs. Patients were assessed for uncorrected and distance-corrected near (33 cm), intermediate (66 cm), and distance visual acuity. Distance contrast sensitivity under photopic (85 cd/m2) conditions with and without glare was also measured...
March 2016: Journal of Refractive Surgery
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