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Intraocular lenses

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https://www.readbyqxmd.com/read/29786830/blue-light-filtering-intraocular-lenses-iols-for-protecting-macular-health
#1
REVIEW
Laura E Downie, Ljoudmila Busija, Peter R Keller
BACKGROUND: An intraocular lens (IOL) is a synthetic lens that is surgically implanted within the eye following removal of the crystalline lens, during cataract surgery. While all modern IOLs attenuate the transmission of ultra-violet (UV) light, some IOLs, called blue-blocking or blue-light filtering IOLs, also reduce short-wavelength visible light transmission. The rationale for blue-light filtering IOLs derives primarily from cell culture and animal studies, which suggest that short-wavelength visible light can induce retinal photoxicity...
May 22, 2018: Cochrane Database of Systematic Reviews
https://www.readbyqxmd.com/read/29773457/effect-of-increasing-flow-when-grooving-during-phacoemulsification
#2
Brian A Bird, Rhett S Thomson, Lance A Stutz, Joshua B Heczko, Ashlie A Bernhisel, William R Barlow, Brian Zaugg, Jeff H Pettey, Randall J Olson
PURPOSE: To determine optimum flow settings on the Centurion Vision System during the grooving step in cataract surgery. SETTING: John A. Moran Eye Center Laboratory, University of Utah, Salt Lake City, Utah, USA. DESIGN: Experimental study. METHODS: Intact porcine lenses hardened by formalin and placed in a chamber designed to simulate the anterior chamber of the eye were used to test flow rate settings at 20 mL/min, 40 mL/min, and 60 mL/min...
May 15, 2018: Journal of Cataract and Refractive Surgery
https://www.readbyqxmd.com/read/29772050/combined-femtosecond-laser-assisted-cataract-surgery-and-small-gauge-pars-plana-vitrectomy-using-different-devices-a-new-trend-for-vitreoretinal-surgery
#3
Bruno de Queiroz Alves, Oswaldo Ferreira Moura Brasil, Cristiano Toesca Espinhosa, Ricardo Miguel Japiassu, Mariana Batista Gonçalves, Otaviano Magalhães Júnior, André Maia, Emmerson Badaró, Paula Serraino, Arturo Alezzandrinni, Mauricio Maia
BACKGROUND AND OBJECTIVE: To report the efficacy, safety, and benefits of femtosecond laser-assisted cataract surgery (FLACS) combined with sutureless 23-gauge pars plana vitrectomy (PPV). PATIENTS AND METHODS: This multicenter, retrospective study evaluated patient records and videos of 43 cases with retinal pathologies and cataract who underwent the combined procedure. RESULTS: In 44.2% and 55.8% of cases, respectively, the LenSx Laser (femtosecond machine; Alcon, Fort Worth, TX) and the Constellation (vitreous cutter; Alcon, Fort Worth, TX), and the Victus (femtosecond machine; Bausch + Lomb, Rochester, NY) and Stellaris PC (vitreous cutter; Bausch + Lomb, Rochester, NY) were used...
May 1, 2018: Ophthalmic Surgery, Lasers & Imaging Retina
https://www.readbyqxmd.com/read/29750951/comparison-of-three-intraocular-lens-implantation-procedures-for-aphakic-eyes-with-insufficient-capsular-support-a-network-meta-analysis
#4
Xi Li, Shuang Ni, Shuyi Li, Qianyin Zheng, Jing Wu, Guanlu Liang, Wen Xu
PURPOSE: To compare the clinical outcomes and main complications of transscleral-fixated (TSF), intrascleral-fixated (ISF) and iris-fixated (IF) intraocular lenses (IOLs). DESIGN: Systematic review and network meta-analysis. METHODS: We searched Pubmed, EMBASE and the Cochrane library for relevant articles up to April 2017 with no language restrictions, and related studies meeting the eligibility criteria were included. The Bayesian framework was performed to compare the visual outcomes and complications of these three approaches...
May 8, 2018: American Journal of Ophthalmology
https://www.readbyqxmd.com/read/29747363/-value-the-correction-of-corneal-astigmatism-in-cataract-surgery
#5
J Wang, Y X Cao
The aim of modern micro-incision phacoemulsification combined with foldable intraocular lens implantation and femtosecond laser-assisted cataract surgery is evolving from a simple pursuit of recuperation to a refractive procedure, which involves the correction of ametropia according to preoperative and postoperative refractive conditions, especially corneal astigmatism, in order to achieve the goal of optimized postoperative uncorrected full range of vision. Nowadays, due attention to the effect of preoperative corneal astigmatism, surgery-induced astigmatism and residual astigmatism after operation is lacked, which affect postoperative visual acuity significantly...
May 11, 2018: [Zhonghua Yan Ke za Zhi] Chinese Journal of Ophthalmology
https://www.readbyqxmd.com/read/29738591/comparing-femtosecond-laser-assisted-cataract-surgery-before-and-after-phakic-intraocular-lens-removal
#6
Tim Schultz, Luca Schwarzenbacher, H Burkhard Dick
PURPOSE: To investigate two approaches for femtosecond laser-assisted cataract surgery (FLACS) in patients with phakic intraocular lenses (IOLs). METHODS: Anterior capsulotomy and lens fragmentation were performed with an image-guided femtosecond laser. Laser treatment was performed under sterile conditions prior to (technique 1, 5 cases) or after (technique 2, 5 cases) phakic IOL explantation. RESULTS: In technique 1, gas accumulated between the phakic IOL and the anterior capsule...
May 1, 2018: Journal of Refractive Surgery
https://www.readbyqxmd.com/read/29738590/refractive-outcomes-after-femtosecond-laser-assisted-cataract-surgery-in-eyes-with-anterior-chamber-phakic-intraocular-lenses
#7
Gernot Steinwender, Mehdi Shajari, Thomas Kohnen
PURPOSE: To report the efficacy, predictability, and safety of femtosecond laser-assisted cataract surgery (FLACS) in eyes with anterior chamber phakic intraocular lenses (IOLs). METHODS: This retrospective case series included eyes with previous implantation of an angle-supported and an iris-fixated phakic IOL for the correction of myopia that underwent a combined procedure of phakic IOL ex-plantation and FLACS with in-the-bag implantation of a posterior chamber IOL...
May 1, 2018: Journal of Refractive Surgery
https://www.readbyqxmd.com/read/29724209/microbial-keratitis-induced-endophthalmitis-incidence-symptoms-therapy-visual-prognosis-and-outcomes
#8
Daniel Zapp, Daria Loos, Nikolaus Feucht, Ramin Khoramnia, Tamer Tandogan, Lukas Reznicek, Christian Mayer
BACKGROUND: To evaluate symptoms, therapies and outcomes in rare microbial keratitis-induced endophthalmitis. METHODS: Retrospective study with 11 patients treated between 2009 and 2014. Clinical findings, corneal diseases, history of steroids and trauma, use of contact lenses, number and type of surgical interventions, determination of causative organisms and visual acuity (VA) were evaluated. RESULTS: The incidence of transformation from microbial keratitis to an endophthalmitis was 0...
May 3, 2018: BMC Ophthalmology
https://www.readbyqxmd.com/read/29721927/estimations-of-retinal-blue-light-irradiance-values-and-melatonin-suppression-indices-through-clear-and-yellow-tinted-intraocular-lenses
#9
Masaki Tanito, Ichiya Sano, Tsutomu Okuno, Yoshihisa Ishiba, Akihiro Ohira
Spectral transmittance values in the wavelength range of 300 to 800 nanometers were measured using a spectrophotometer for 18 intraocular lenses (IOLs) including clear (ZCB00) and yellow-tinted (ZCB00V, both from AMO Japan) IOLs with three different lens powers. Also measured were the blue-light irradiance (BLI) values, which might reflect retinal damage caused by sunlight, and the melatonin suppression indices (MSIs), which might reflect the nonvisual photoreception function, through these IOLs. The BLIs (in mWcm-2 ) calculated were 7...
2018: Advances in Experimental Medicine and Biology
https://www.readbyqxmd.com/read/29708928/revisiting-monovision-for-presbyopia
#10
Abdallah Mahrous, Jessica B Ciralsky, Edward C Lai
PURPOSE OF REVIEW: Presbyopia is an inevitable age-related loss of accommodation that results in spectacle dependence with common everyday near-vision tasks. Many surgical approaches to presbyopic correction have been investigated, with monovision correction being amongst the most common and attractive options. In this article, we will review the advantages and disadvantages of the new modalities of presbyopic monovision correction. RECENT FINDINGS: New methods such as mini-monovision, corneal inlays, and multifocal corneal ablation aim to maximize stereopsis and decrease the anisometropic side effects of conventional monovision...
April 27, 2018: Current Opinion in Ophthalmology
https://www.readbyqxmd.com/read/29703290/quality-of-images-with-toric-intraocular-lenses
#11
Daniele Tognetto, Alberto Armando Perrotta, Francesco Bauci, Silvia Rinaldi, Manlio Antonuccio, Felice Andrea Pellegrino, Gianfranco Fenu, George Stamatelatos, Noel Alpins
PURPOSE: To objectively evaluate the image quality obtained with toric intraocular lenses (IOLs) when misaligned from the intended axis. SETTING: University Eye Clinic and the Department of Industrial and Information Engineering, University of Trieste, Trieste, Italy. DESIGN: Experimental study. METHODS: An experimental optoelectronic test bench was created. It consisted of a high-resolution monitor to project target images and an artificial eye...
March 2018: Journal of Cataract and Refractive Surgery
https://www.readbyqxmd.com/read/29697436/extended-depth-of-focus-intraocular-lenses-for-presbyopia
#12
Sruti S Akella, Viral V Juthani
PURPOSE OF REVIEW: To summarize the various extended depth of focus (EDOF) intraocular lenses currently available to patients and to describe visual outcomes and patient satisfaction. RECENT FINDINGS: EDOF lenses are a relatively new option for presbyopic correction. Preliminary studies show high levels of spectacle independence and patient satisfaction. The only United States Federal Drug Administration-approved intraocular lens currently on market is the TECNIS Symfony (Johnson and Johnson Vision, Jacksonville, FL)...
April 24, 2018: Current Opinion in Ophthalmology
https://www.readbyqxmd.com/read/29692478/a-clinical-study-to-evaluate-the-results-after-toric-intraocular-lens-implantation-in-cases-of-corneal-astigmatism
#13
P S Moulick, V K Mohindra, V S Gurunadh, Parth Patel, Sandeep Gupta, M A Khan
Backgroud: Modern day cataract surgery aims at a spectacle free vision which becomes difficult in cases with pre-operative astigmatism more than 1.5 D. Implantation of toric intra-ocular lenses (IOL) after phacoemulsification in such eyes is one of the ways to counteract this problem. Methods: Thirty eyes with pre-operative astigmatism between 1.5 D and 4.5 D were implanted with toric IOLs following uneventful phaco-emulsification. The estimation of the axis of implantation of this toric IOL included calculating the surgically induced astigmatism (SIA) of the surgeon...
April 2018: Medical Journal, Armed Forces India
https://www.readbyqxmd.com/read/29685773/dynamic-tracking-of-purkinje-images-for-the-comparison-of-pseudophakodonesis-between-in-the-bag-and-secondary-fixated-intraocular-lenses
#14
Dhivya Ashok Kumar, Amar Agarwal, Nivean Madhivanan, Soundari Sivagnanam, Radika Chandrasekar, Srinivasan Venugopal
PURPOSE: To compare the pseudophakodonesis of in-the-bag intraocular lens (IOL) and a secondary fixated IOL by tracking the Purkinje image IV. SETTING: Dr. Agarwal's Eye Hospital and Eye Research Centre, Chennai, India. DESIGN: Prospective case series. METHODS: The IOL movement was recorded via slitlamp videography (DC3), streamed in video editor (Pinnacle), and evaluated by ImageJ analysis. The positional difference of Purkinje IV in relation to the stationary image Purkinje I at 3 random timeframes was measured...
April 20, 2018: Journal of Cataract and Refractive Surgery
https://www.readbyqxmd.com/read/29685737/low-power-versus-medium-power-toric-intraocular-lenses-in-cataract-surgery-about-110-eyes
#15
A Mairot, H El Chehab, E Agard, A Rezkallah, V Bouteleux, C Dot
PURPOSE: To analyze the refractive predictability of low-power and medium-power toric intraocular lenses (IOL) during cataract surgery. METHODS: A retrospective case series. Patients with low and moderate degrees of astigmatism were treated with either an Alcon AcrySof IQ toric monofocal lens (SN6AT2 or SN6AT3) or a Zeiss toric monofocal lens (709 MP + 1 D or 709 MP + 1.5 D). They were divided into two groups: group 1 with low-power toric IOL (n = 40, SN6AT2 and 709 MP + 1), group 2 with medium-power toric IOL (n = 70, SN6AT3 and 709 MP + 1...
April 20, 2018: Journal Français D'ophtalmologie
https://www.readbyqxmd.com/read/29683869/adjustable-buckle-slide-suture-a-novel-surgical-technique-for-transscleral-fixation-of-intraocular-lenses
#16
Peiquan Zhao, Zhongmin Ou, Qi Zhang, Haiying Jin
No abstract text is available yet for this article.
April 20, 2018: Retina
https://www.readbyqxmd.com/read/29676324/commentary-presbyopia-correction-with-intraocular-lenses
#17
Kunwar Vikram Singh Dhaliwal
No abstract text is available yet for this article.
May 2018: Indian Journal of Ophthalmology
https://www.readbyqxmd.com/read/29651343/through-focus-vision-performance-and-light-disturbances-of-3-new-intraocular-lenses-for-presbyopia-correction
#18
Santiago Escandón-García, Filomena J Ribeiro, Colm McAlinden, António Queirós, José M González-Méijome
Purpose: To compare the through-focus visual performance in a clinical population of pseudophakic patients implanted with two new trifocal intraocular lenses (IOLs) and one extended depth of focus IOL. Methods: Prospective, nonrandomized, examiner-masked case series. Twenty-three patients received the FineVision® and seven patients received the PanOptix™ trifocal IOLs. Fifteen patients received the Symfony extended depth of focus IOL. Mean age of patients was 63 ± 8 years...
2018: Journal of Ophthalmology
https://www.readbyqxmd.com/read/29623732/clinical-outcome-and-higher-order-aberrations-after-bilateral-implantation-of-an-extended-depth-of-focus-intraocular-lens
#19
Daniel Pilger, David Homburg, Tobias Brockmann, Necip Torun, Eckart Bertelmann, Christoph von Sonnleithner
PURPOSE: The purpose of this study was to assess the clinical outcome after a bilateral implantation of an extended depth of focus intraocular lens in comparison to a monofocal intraocular lens. SETTING: Department of Ophthalmology, Charité-Medical University Berlin, Germany. PATIENTS AND METHODS: A total of 60 eyes of 30 patients were enrolled in this prospective, single-center study. The cataract patients underwent phacoemulsification with bilateral implantation of a TECNIS® Symfony (Abbott Medical Optics, Santa Ana, CA, USA, 15 patients) or a TECNIS Monofocal ZCB00 (Abbott Medical Optics, Santa Ana, CA, USA, 15 patients)...
April 1, 2018: European Journal of Ophthalmology
https://www.readbyqxmd.com/read/29619847/scanning-electron-microscopic-characteristics-of-manually-loaded-and-preloaded-foldable-acrylic-intraocular-lenses
#20
Mahmoud Fathy Rateb, Zeiad Hasan Eldaly, Walid Saad Eldein Ibrahim, Ahmed Hasan Eldoghaimy
PURPOSE: To compare surface alterations between preloaded and manually loaded intraocular lens. METHODS: Scanning electron microscope was utilized to evaluate surface alteration and deposits in four different types of intraocular lenses: preloaded hydrophobic acrylic, preloaded hydrophilic acrylic, manually loaded hydrophobic acrylic, and manually loaded hydrophilic acrylic. Six lenses with different powers (+6 D, +22 D, and +29 D) were used from each category, to represent different thickness categories of the intraocular lenses...
March 1, 2018: European Journal of Ophthalmology
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