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Toric lens

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https://www.readbyqxmd.com/read/28210183/intraocular-lens-power-overestimation-in-a-patient-with-history-of-circling-keratorraphy
#1
Vasilios F Diakonis, Nilufer Yesilirmak, George D Kymionis, Sonia H Yoo
We report a case of cataract extraction and intraocular lens (IOL) power overestimation in a patient with history of hyperopia managed with circling keratorraphy. A 65-year-old female presented to our institute complaining of decreased vision in both eyes. The patient had a history of bilateral hyperopia that was managed 20 years ago (1994) with circling keratorraphy. At presentation her uncorrected distance visual acuity (UDVA) was 20/70 and 20/60 in her right eye (OD) and left eye (OS), respectively, while her corrected distance visual acuity (CDVA) was 20/25 OD and 20/25 OS with manifest refraction of -0...
July 2016: Saudi Journal of Ophthalmology: Official Journal of the Saudi Ophthalmological Society
https://www.readbyqxmd.com/read/28185842/corneal-astigmatism-measurement-by-ray-tracing-versus-anterior-surface-based-keratometry-in-candidates-for-toric-iol-implantation
#2
Ugo de Sanctis, Piero Donna, Rachele R Penna, Maria Isabella Calastri, Chiara M Eandi
PURPOSE: To compare corneal astigmatism derived from total corneal refractive power (CATCRP), a ray-tracing method, with that derived from simulated keratometry (CASimK), an anterior surface-based method, in candidates for toric intraocular lens (IOL) implantation. DESIGN: Reliability analysis. METHODS: In one eye of 200 consecutive patients (mean age 71 ±9 years) with cataract, a Pentacam HR (Oculus, Wetzlar, Germany) was used to measure CATCRP and CASimK...
February 6, 2017: American Journal of Ophthalmology
https://www.readbyqxmd.com/read/28101039/multifocal-toric-intraocular-lens-for-traumatic-cataract-in-a-child
#3
Yanfeng Zeng, Licheng Fan, Peirong Lu
A child suffering from traumatic cataract and corneal astigmatism of 2.14 D had a phacoemulsification operation and implantation of a ReSTOR Toric intraocular lens (IOL) to correct the astigmatism. The primary outcome measurements were the uncorrected distance visual acuity (UDVA), uncorrected near vision at 40 cm, intraocular pressure, spherical equivalent refraction, residual astigmatism, corneal astigmatism, presence of unusual optical phenomena, and use of spectacles. At 7 months postoperatively, UDVA was maintained between 16/20 and 24/20, near vision was between J1 and J3, residual spherical refraction was 0-0...
September 2016: Case Reports in Ophthalmology
https://www.readbyqxmd.com/read/28096654/comparison-of-visian-toric-collamer-lens-and-toric-acrylic-intraocular-lens-implantation-for-the-treatment-of-myopia-with-astigmatism
#4
Hatem Ammar, Mohamed Anbar, Marwa M Abdellah
PURPOSE: To compare the efficacy and outcome of phakic toric implantable collamer lens (TICL) and refractive clear lens extraction with AcrySof Toric intraocular lens (TIOL) implantation for the treatment of myopic astigmatism. PATIENTS AND METHODS: This study assessed eyes with myopic astigmatism >-1 D and ≤-4 D with a spherical equivalent >10 D or <10 D if the patients were unsuitable for corneal refractive surgery. These eyes were divided into group A, in which Visian Toric ICL™ Phakic TICL was implanted, and group B, which involved clear lens extraction with implantation of an AcrySof IQ toric SN60T3-9™ IOL...
2017: Clinical Ophthalmology
https://www.readbyqxmd.com/read/28091897/comparative-analysis-of-the-visual-and-refractive-outcomes-of-a-refractive-segmented-multifocal-intraocular-lens-with-and-without-toricity-1-year-results
#5
Ryo Shodai, Kazuno Negishi, Hiroyuki Arai, Ikuko Toda, Hidemasa Torii, Kazuo Tsubota
PURPOSE: To compare the visual and refractive outcomes up to 1 year postoperatively following implantation of a refractive segmented or a refractive segmented toric multifocal intraocular lens (IOL). METHODS: This retrospective study included 108 eyes of 64 patients who underwent cataract surgery with implantation of a refractive segmented multifocal IOL (Lentis Mplus LS-313 MF30 IOL) (LM group) and 81 eyes of 49 patients with implantation of a refractive segmented toric multifocal IOL (Lentis Mplus LU-313 MF30T IOL) (LMT group)...
January 13, 2017: Japanese Journal of Ophthalmology
https://www.readbyqxmd.com/read/28086913/correction-of-irregular-and-induced-regular-corneal-astigmatism-with-toric-iol-after-posterior-segment-surgery-a-case-series
#6
Bence L Kolozsvári, Gergely Losonczy, Dorottya Pásztor, Mariann Fodor
BACKGROUND: Toric intraocular lens (IOL) implantation can be an effective method for correcting corneal astigmatism in patients with vitreoretinal diseases and cataract. Our purpose is to report the outcome of toric IOL implantation in two cases - a patient with scleral-buckle-induced regular corneal astigmatism and a patient with keratoconus following pars plana vitrectomy. As far as we are aware, there are no reported cases of toric IOL implantation in a vitrectomized eye with keratoconus nor of toric IOL implantation in patients with scleral-buckle-induced regular corneal astigmatism...
January 13, 2017: BMC Ophthalmology
https://www.readbyqxmd.com/read/28073689/corneo-scleral-contact-lens-in-a-piggyback-system-for-keratoconus-a-case-report
#7
Esteban Porcar, Juan Carlos Montalt, Enrique España-Gregori, Cristina Peris-Martínez
PURPOSE: We describe a case of fitting a corneo-scleral contact lens with a multi-aspheric geometry design (MAGD CScL) on top of a daily silicone hydrogel lens (piggyback system) for keratoconus management. METHODS: A 48-year-old man using soft toric contact lenses required an improvement in the unsatisfactory quality of his vision. He presented with bilateral asymmetric keratoconus with high myopia in the right eye (RE) and severe myopia in the left eye (LE). In addition, he had low vision in his LE because of a maculopathy...
January 7, 2017: Contact Lens & Anterior Eye: the Journal of the British Contact Lens Association
https://www.readbyqxmd.com/read/28005433/combined-special-capsular-tension-ring-and-toric-iol-implantation-for-management-of-astigmatism-and-high-axial-myopia-with-cataracts
#8
Yang Zhao, Jiaxin Li, Ke Yang, Xiao Li, Siquan Zhu
AIM: This study aimed to compare the effects of toric intraocular lens (IOL) implantation with a capsular tension ring and toric IOL implantation only in patients with axial myopic astigmatism who had undergone cataract surgery. METHODS: Of 34 patients with axial myopia, 16 patients who had received IOL and capsular tension ring (CTR) implantation were included in the combined group and 18 patients who received toric IOL implantation only were included in the simple group...
December 22, 2016: Seminars in Ophthalmology
https://www.readbyqxmd.com/read/28003977/combination-of-toric-and-multifocal-intraocular-lens-implantation-in-bilateral-cataract-patients-with-unilateral-astigmatism
#9
Jing-Li Liang, Fang Tian, Hong Zhang, He Teng
AIM: To assess the binocular visual function in bilateral cataract patients with unilateral astigmatism after combined implantations of Toric with multifocal intraocular lens (IOL), and to compare with that of Toric and monofocal IOL implantation. METHODS: All the 30 patients with unilateral astigmatism suffered bilateral cataract were randomly divided into two groups: Toric plus multifocal IOL group and Toric plus monofocal IOL group. Uncorrected and corrected visual acuity at distance (5...
2016: International Journal of Ophthalmology
https://www.readbyqxmd.com/read/27980362/effectiveness-of-toric-orthokeratology-in-the-treatment-of-patients-with-combined-myopia-and-astigmatism
#10
Byul Lyu, Kyu Yeon Hwang, Sun Young Kim, Su Young Kim, Kyung Sun Na
PURPOSE: The purpose of this multi-institute, single-group clinical trial was to evaluate the effectiveness and safety of toric orthokeratology lenses for the treatment of patients with combined myopia and astigmatism. METHODS: A total of 44 patients were included in this clinical trial. The patients ranged in age from 7 to 49 years, with myopia of -0.75 to -6.0 diopters (D) and astigmatism of 1.25 to 4.0 D. After excluding 21 subjects, 23 subjects (39 eyes) were analyzed after toric orthokeratology lens use...
December 2016: Korean Journal of Ophthalmology: KJO
https://www.readbyqxmd.com/read/27958211/toric-multifocal-intraocular-lens-implantation-in-a-case-of-bilateral-anterior-and-posterior-lenticonus-in-alport-syndrome
#11
Jeevan S Ladi, Nitant A Shah
We report the first case of toric multifocal intraocular lens (IOL) implantation in both the eyes of a young patient of Alport syndrome with anterior and posterior lenticonus with a successful outcome. An 18-year-old female patient presented with progressively blurred vision in both eyes since 4-5 years not improving with glasses. Refraction showed high myopia with astigmatism; however, the vision did not improve beyond 6/60 with glasses correction. Clinical examination on slit lamp showed anterior and posterior lenticonus bilaterally with a classical oil droplet appearance...
November 2016: Indian Journal of Ophthalmology
https://www.readbyqxmd.com/read/27956286/residual-astigmatism-after-toric-intraocular-lens-implantation-analysis-of-data-from-an-online-toric-intraocular-lens-back-calculator
#12
Brent A Kramer, John P Berdahl, David R Hardten, Richard Potvin
PURPOSE: To evaluate some possible causes for residual astigmatism after toric intraocular lens (IOL) implantation based on an analysis of data from an online toric IOL back-calculator. DESIGN: Retrospective data review. METHODS: An online toric back-calculator was designed to allow users to input preoperative toric planning information along with postoperative IOL orientation and refractive results. These were then used to determine the optimum orientation of the IOL to reduce refractive astigmatism...
November 2016: Journal of Cataract and Refractive Surgery
https://www.readbyqxmd.com/read/27898516/clinical-evaluation-of-large-diameter-rigid-gas-permeable-versus-soft-toric-contact-lenses-for-the-correction-of-refractive-astigmatism-a-multicenter-study
#13
Langis Michaud, Edward S Bennett, Stephanie L Woo, Renee Reeder, Bruce W Morgan, Amy Dinardo, Jennifer S Harthan
PURPOSE: This study aims to address the clinical performance of a large diameter rigid gas permeable lens (LRGP) in a group of subjects with low-to-moderate (0.75-2.75 D) refractive astigmatism. An additional goal was to determine whether soft toric or LRGP contact lenses performed better objectively in the correction of astigmatism and to determine which modality is preferred by subjects. METHODS: This was a multisite prospective cross-over clinical study. Ten asymptomatic contact lens wearers per site (four university clinics) were recruited and randomly assigned to group A or group B...
November 24, 2016: Eye & Contact Lens
https://www.readbyqxmd.com/read/27867718/temporal-multiplexing-with-adaptive-optics-for-simultaneous-vision
#14
Eleni Papadatou, Antonio J Del Águila-Carrasco, Iván Marín-Franch, Norberto López-Gil
We present and test a methodology for generating simultaneous vision with a deformable mirror that changed shape at 50 Hz between two vergences: 0 D (far vision) and -2.5 D (near vision). Different bifocal designs, including toric and combinations of spherical aberration, were simulated and assessed objectively. We found that typical corneal aberrations of a 60-year-old subject changes the shape of objective through-focus curves of a perfect bifocal lens. This methodology can be used to investigate subjective visual performance for different multifocal contact or intraocular lens designs...
October 1, 2016: Biomedical Optics Express
https://www.readbyqxmd.com/read/27843290/vector-analysis-investigation-of-toric-intraocular-lens-with-no-deviation-from-the-intended-axis
#15
Atsushi Kawahara, Yoshinori Takayanagi
AIM: The aim of this research was to evaluate vector analysis after implantation of toric intraocular lenses (IOLs) without deviation from the intended axis. METHODS: The study included 18 eyes of 16 patients who underwent cataract surgery with the insertion of a toric implant (AcrySof IQ Toric). The postoperative IOL meridian placement completely corresponded to that planned. Using vector analysis, surgically induced astigmatism (SIA) was derived from the refractive outcome versus the predicted postoperative keratometric astigmatism and was compared with targeted induced astigmatism (TIA)...
2016: Clinical Ophthalmology
https://www.readbyqxmd.com/read/27843285/clinical-outcomes-with-toric-intraocular-lenses-planned-using-an-optical-low-coherence-reflectometry-ocular-biometer-with-a-new-toric-calculator
#16
Kjell G Gundersen, Richard Potvin
PURPOSE: To prospectively evaluate postoperative clinical outcomes with implantation of toric intraocular lenses (IOLs) using preoperative keratometry from an optical low coherence reflectometry (OLCR) ocular biometer (Lenstar(®) LS900) and the built-in Barrett toric calculator. PATIENTS AND METHODS: A prospective observational study recruited one or both eyes of subjects who underwent uncomplicated cataract surgery with toric IOL implantation using OLCR biometery data and the Barrett toric IOL calculator for toric IOL planning...
2016: Clinical Ophthalmology
https://www.readbyqxmd.com/read/27830188/introduction-of-a-toric-intraocular-lens-to-a-non-refractive-cataract-practice-challenges-and-outcomes
#17
Clare Kirwan, John M Nolan, Jim Stack, Ian Dooley, Johnny Moore, Tara Cb Moore, Stephen Beatty
AIM: To identify challenges inherent in introducing a toric intraocular lens (IOL) to a non-refractive cataract practice, and evaluate residual astigmatism achieved and its impact on patient satisfaction. METHODS: Following introduction of a toric IOL to a cataract practice with all procedures undertaken by a single, non-refractive, surgeon (SB), pre-operative, intra-operative and post-operative data was analysed. Attenuation of anticipated post-operative astigmatism was examined, and subjectively perceived visual functioning was assessed using validated questionnaires...
May 25, 2016: International Journal of Ophthalmology and Clinical Research
https://www.readbyqxmd.com/read/27824384/refractive-lenticule-transplantation-for-correction-of-iatrogenic-hyperopia-and-high-astigmatism-after-lasik
#18
Apostolos Lazaridis, Dan Z Reinstein, Timothy J Archer, Stephan Schulze, Walter Sekundo
PURPOSE: To design a technique for intrastromal transplantation of stromal lenticules with specific refractive power for correction of post-LASIK induced hyperopia and astigmatism. METHODS: A 28-year-old patient was referred for consultation after complicated LASIK for moderate myopia and astigmatism. The refractive error of the right eye was severely overcorrected due to data entry error. Post-LASIK refraction showed high astigmatism (right eye: +6.50 -9.00 @ 84°) and corrected distance visual acuity (CDVA) of 20/32...
November 1, 2016: Journal of Refractive Surgery
https://www.readbyqxmd.com/read/27822628/-toric-add-on-intraocular-lenses-for-correction-of-high-astigmatism-after-pseudophakic-keratoplasty
#19
A Hassenstein, F Niemeck, K Giannakakis, M Klemm
Perforating keratoplasty shows good morphological results with a clear cornea; however, a limiting factor is often the resulting astigmatism, which cannot be corrected with either glasses or contact lenses (CL) in up to 20% of the patients. We retrospectively investigated 15 patients after pseudophakic perforating keratoplasty, who received implantation of toric add-on intraocular lenses (IOL) to correct astigmatism. The mean preoperative astigmatism of 6.5 diopter (dpt) could be reduced to a mean postoperative value of 1...
November 7, 2016: Der Ophthalmologe: Zeitschrift der Deutschen Ophthalmologischen Gesellschaft
https://www.readbyqxmd.com/read/27818113/factors-in-the-success-of-new-contact-lens-wearers
#20
Anna Sulley, Graeme Young, Chris Hunt
PURPOSE: To determine the first-year retention rate for patients fitted with contact lenses (CLs) and identify factors associated with retention and dropout. METHODS: This multi-site study was a retrospective chart review of the status of neophyte CL wearers fitted in representative UK eye care practices. RESULTS: Consecutive records for 524 patients at 29 sites were reviewed. Mean age at dispensing was 34 years (range 8-79), 68% were under 45 years and 61% female...
February 2017: Contact Lens & Anterior Eye: the Journal of the British Contact Lens Association
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