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cataract and refractive surgery

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https://www.readbyqxmd.com/read/27920717/cataract-surgery-with-a-new-fluidics-control-phacoemulsification-system-in-nanophthalmic-eyes
#1
John S M Chang, Jack C M Ng, Vincent K C Chan, Antony K P Law
PURPOSE: To report visual outcomes and complications after cataract surgery in nanophthalmic eyes with a phacoemulsification system using the active fluidics control strategy. METHODS: This is a retrospective case series. All eyes with an axial length of less than 20 mm that underwent cataract surgery or refractive lens exchange using the Centurion Vision System (Alcon Laboratories Inc.) in Hong Kong Sanatorium and Hospital were evaluated. The visual acuity and intraoperative and postoperative complications were reported...
September 2016: Case Reports in Ophthalmology
https://www.readbyqxmd.com/read/27918589/outcomes-of-cataract-surgery-in-urban-and-rural-population-in-the-south-indian-state-of-andhra-pradesh-rapid-assessment-of-visual-impairment-ravi-project
#2
Srinivas Marmamula, Rohit C Khanna, Konegari Shekhar, Gullapalli N Rao
OBJECTIVE: To assess the visual outcomes after cataract surgery among urban and rural population aged ≥40 years in the South India state of Andhra Pradesh. METHODS: A population based cross-sectional study was conducted in which 7800 subjects were sampled from two rural and one urban location. Visual Acuity was assessed and eye examination were performed by trained personnel. A questionnaire was used to collect personal and demographic information, and history of cataract surgery...
2016: PloS One
https://www.readbyqxmd.com/read/27911420/-role-of-immunological-factors-in-the-development-of-myopic-choroidal-neovascularization
#3
A G Shchuko, N V Zaitseva, T N Yur'eva, E R Chernykh, I M Mikhalevich, A V Grigor'eva
AIM: To study the concentration of cytokines in the aqueous humor of the anterior chamber in patients with myopic choroidal neovascularization (mCNV) and to compare the results to their ophthalmic status. MATERIAL AND METHODS: A total of 19 patients (19 eyes) with mCNV treated with intravitreal ranibizumab were included in the study. The control group consisted of 15 patients (15 eyes) with myopia who had cataract surgery. Age, sex, and refractive error distribution were similar to that in the study group...
2016: Vestnik Oftalmologii
https://www.readbyqxmd.com/read/27905889/influence-of-posterior-corneal-astigmatism-on-postoperative-refractive-astigmatism-in-pseudophakic-eyes-after-cataract-surgery
#4
Maki Sano, Takahiro Hiraoka, Yuta Ueno, Hideo Itagaki, Tomohiro Ogami, Tetsuro Oshika
BACKGROUND: To examine the influence of posterior corneal astigmatism on postoperative refractive astigmatism in pseudophakic eyes after cataract surgery. METHODS: The study enrolled 64 pseudophakic eyes of 50 patients (71.8 ± 9.9 years old, mean ± standard deviation) who had undergone phacoemulsification with non-toric IOL implantation. Refractive astigmatism was measured using an auto ref-keratometer with a 0.01- diopter (D) scale. Two types of corneal astigmatism were calculated using anterior segment optical coherence tomography; keratometric and total corneal astigmatism...
December 1, 2016: BMC Ophthalmology
https://www.readbyqxmd.com/read/27899084/clinical-outcomes-of-a-new-diffractive-trifocal-intraocular-lens-with-enhanced-depth-of-focus-edof
#5
Banu Torun Acar, Erkan Duman, Saban Simsek
BACKGROUND: To evaluate the clinical outcomes after the implantation of a new trifocal diffractive intraocular lens (IOL) combined with Enhanced depth of focus (EDOF) technology. METHODS: The study enrolled 80 eyes of 40 patients who underwent cataract surgery with bilateral implantation of a diffractive trifocal IOL (Reviol Tri-ED) designed with a combination of enhanced depth of focus. Mean age was 52.09 ± 11.32 years (range from 45 to 70 years). Uncorrected distance visual acuity (UDVA), corrected distance visual acuity (CDVA), uncorrected intermediate visual acuity (UIVA), corrected intermediate visual acuity (CIVA), uncorrected near visual acuity (UNVA), corrected near visual acuity (CNVA), keratometry (K), and manifest refraction spherical equivalent (MRSE) were evaluated pre- and postoperatively...
November 29, 2016: BMC Ophthalmology
https://www.readbyqxmd.com/read/27898449/modern-phacoemulsification-and-intraocular-lens-implantation-refractive-lens-exchange-is-safe-and-effective-in-treating-high-myopia
#6
Bhaskar Srinivasan, Hiu Ying Leung, He Cao, Shu Liu, Lizhen Chen, Alex Hoi Fan
Improved efficacy, predictability, and safety of modern phacoemulsification have resulted in cataract surgery being considered as a refractive procedure. Refractive lens exchange by definition is a surgery aimed at replacing the cataractous or clear crystalline lens with an intraocular lens (IOL) in cases of high ametropia. The excellent intraocular optics of this procedure provide a better visual outcome as compared with laser refractive surgery in high myopia. With advances in technology and IOL formulas, the predictability of refractive outcome after cataract surgery in high myopes has improved...
November 2016: Asia-Pacific Journal of Ophthalmology
https://www.readbyqxmd.com/read/27898441/epidemiology-of-myopia
#7
Pei-Chang Wu, Hsiu-Mei Huang, Hun-Ju Yu, Po-Chiung Fang, Chueh-Tan Chen
Myopia is not a simple refractive error, but an eyesight-threatening disease. There is a high prevalence of myopia, 80% to 90%, in young adults in East Asia; myopia has become the leading cause of blindness in this area. As the myopic population increases globally, the severity of its impact is predicted. Approximately one fifth of the myopic population has high myopia (≥-6 diopters), which results in irreversible vision loss such as retinal detachment, choroidal neovascularization, cataracts, glaucoma, and macular atrophy...
November 2016: Asia-Pacific Journal of Ophthalmology
https://www.readbyqxmd.com/read/27846894/corneal-power-evaluation-after-myopic-corneal-refractive-surgery-using-artificial-neural-networks
#8
Robert Koprowski, Michele Lanza, Carlo Irregolare
BACKGROUND: Efficacy and high availability of surgery techniques for refractive defect correction increase the number of patients who undergo to this type of surgery. Regardless of that, with increasing age, more and more patients must undergo cataract surgery. Accurate evaluation of corneal power is an extremely important element affecting the precision of intraocular lens (IOL) power calculation and errors in this procedure could affect quality of life of patients and satisfaction with the service provided...
November 15, 2016: Biomedical Engineering Online
https://www.readbyqxmd.com/read/27843290/vector-analysis-investigation-of-toric-intraocular-lens-with-no-deviation-from-the-intended-axis
#9
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
#10
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/27833928/comparison-of-a-new-optical-biometer-and-a-standard-biometer-in-cataract-patients
#11
Pipat Kongsap
BACKGROUND: Cataract surgery is the most common surgical procedure in ophthalmology. Biometry data and accurate intraocular lens (IOL) calculations are very important in achieving the desired refractive outcomes. The aim of this study was to compare measurements using a new optical low coherence reflectometry (OLCR) biometer (OA-2000) and the gold standard partial coherence interferometry (PCI) optical biometer (IOLMaster 500). METHODS: Ocular biometry of cataract patients were measured by the OA-2000 and IOLMaster 500 to compare keratometry (K), axial length (AL), anterior chamber depth (ACD), white-to-white (WTW) diameter, and IOL power using the SRK/T formula...
2016: Eye and Vision (London, England)
https://www.readbyqxmd.com/read/27830188/introduction-of-a-toric-intraocular-lens-to-a-non-refractive-cataract-practice-challenges-and-outcomes
#12
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/27824379/change-in-anterior-and-posterior-curvature-after-cataract-surgery
#13
Yang Jae Kim, Michael C Knorz, Gerd U Auffarth, Chul Young Choi
PURPOSE: To analyze the change in anterior and posterior corneal curvature after cataract surgery using a Placido-dual rotating Scheimpflug device. METHODS: In a prospective cross-sectional study, corneal curvature was measured using the Galilei G4 device (Ziemer Ophthalmic Systems, Port, Switzerland) preoperatively and 1 week and 1, 3, and 6 months after cataract surgery with a temporal limbal self-sealing 2.2-mm incision. The surgically induced astigmatism (SIA) was determined on the anterior and posterior surfaces...
November 1, 2016: Journal of Refractive Surgery
https://www.readbyqxmd.com/read/27820748/triple-procedure-cataract-extraction-intraocular-lens-implantation-and-corneal-graft
#14
Yoshinori Oie, Kohji Nishida
PURPOSE OF REVIEW: Corneal triple procedures consist of combined keratoplasty surgery and cataract surgery. Currently, anterior lamellar keratoplasty, endothelial keratoplasty, and conventional penetrating keratoplasty, are very often simultaneously performed with cataract surgery. The present article reviews the recent advances and current developments in corneal triple procedures. RECENT FINDINGS: Many new findings have been reported. Core vitrectomy before host trephination and retroillumination during continuous curvilinear capsulorhexis has enabled us to perform penetrating keratoplasty triple procedures more safely...
January 2017: Current Opinion in Ophthalmology
https://www.readbyqxmd.com/read/27818207/validation-of-guidelines-for-undercorrection-of-intra-ocular-lens-iol-power-in-children
#15
Virender Sachdeva, Sushma Katukuri, Ramesh Kekunnaya, Merle Fernandes, Mohammed Hasnat Ali
INTRODUCTION: Initial undercorrection of intra-ocular lens (IOL power) is a common practice in children undergoing pediatric cataract surgery. However, long term refractive status of these children is largely unknown. The purpose of this study is to analyze the long-term refractive status of these children. DESIGN: Retrospective observational study METHODS: We analyzed records of children (< 7 yrs) who underwent cataract surgery where a primary IOL implantation was performed and had completed follow-up upto atleast 7 years of age...
November 3, 2016: American Journal of Ophthalmology
https://www.readbyqxmd.com/read/27813517/benchmarks-for-outcome-indicators-in-pediatric-cataract-surgery
#16
B R Nihalani, D K VanderVeen
PurposeThe purpose of this study was to establish benchmarks for outcome indicators that may help ascertain the quality of pediatric cataract surgery with primary intraocular lens (IOL) implantation.Patients and methodsA retrospective chart review of patients older than 2 years undergoing cataract surgery with primary IOL implantation, by multiple surgeons in a tertiary-care center, from November 2005 to February 2016 was conducted. Patients with ocular comorbidities that would affect the outcomes were excluded...
November 4, 2016: Eye
https://www.readbyqxmd.com/read/27807219/cataract-refractive-surgery-innovative-technology-provides-more-choices-for-canadian-cataract-patients
#17
REVIEW
Richard Potvin
Historically, cataract surgery was aimed at removing the clouded lens of the eye and replacing it with an artificial lens; this provided clear vision to patients but without regard to their refractive error-their need for spectacles or contact lenses after surgery. Modern diagnostic and surgical instrumentation now makes it possible to address these refractive errors at the time of surgery, introducing a new paradigm-cataract refractive surgery. Although not medically necessary, many patients appreciate the chance to reduce or eliminate their need for spectacles after surgery, even if some personal cost is involved...
November 2016: Healthcare Management Forum
https://www.readbyqxmd.com/read/27801688/current-and-effective-advantages-of-femto-phacoemulsification
#18
Ashvin Agarwal, Soosan Jacob
PURPOSE OF REVIEW: The purpose is to review the current and effective advantages of femtosecond laser-assisted cataract surgery (FLACS). RECENT FINDINGS: FLACS has advantages over manual phacoemulsification in its precision, and predictability and may be especially advantageous in difficult situations such as shallow anterior chamber, subluxated cataracts, white cataracts, and so on. However, the femtosecond capsulorhexis may not be as strong as a manual rhexis...
January 2017: Current Opinion in Ophthalmology
https://www.readbyqxmd.com/read/27795795/cataract-surgery-with-intraocular-lens-implantation-in-children-aged-5-15-in-local-anaesthesia-visual-outcomes-and-complications
#19
Kagmeni Giles, Domngang Christelle, Bilong Yannick, Otto Herrmann Fricke, Peter Wiedemann
The aim of this study was to report feasibility, the visual outcomes and complications of pediatric cataract surgery with primary intraocular lens implantation in children aged 5 to15 years in local anesthesia. This retrospective interventional case series included 62 eyes from 50 children who underwent pediatrc cataract surgery with primary intraocular lens implantation at the Mana eye Clinic Nkongsamba between 2006 and 2015 Main outcome measures were: best-corrected post operative visual acuity, and intraoperative and postoperative complications...
2016: Pan African Medical Journal
https://www.readbyqxmd.com/read/27792408/the-quest-for-spectacle-independence-a-comparison-of-multifocal-intraocular-lens-implants-and-pseudophakic-monovision-for-patients-with-presbyopia
#20
Steven Greenstein, Roberto Pineda
We performed a literature review comparing multifocal intraocular lens (IOL) implantation with pseudophakic monovision to treat presbyopia. Multifocal IOLs utilize refractive or diffractive principles to treat both distance and near vision, with a single lens implant. Monovision uses traditional monofocal lens implants to treat the dominant eye for emmotropia, and the non-dominant eye for myopia. This planned anisometropia is designed to enhance intermediate or near vision. Generally, distance vision was similar with both types of lens implantation, near vision was better with multifocal IOLs, and intermediate vision appeared to be better in the monovision group...
October 28, 2016: Seminars in Ophthalmology
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