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Konstantinos T Tsaousis, Liliana Werner, Nicholas Reiter, Jesus Paulo Perez, He J Li, Jia J Guan, Nick Mamalis
PURPOSE: To evaluate the alterations in the morphology and elemental composition of reusable phacoemulsification tips after cleaning and sterilization. SETTING: John A. Moran Eye Center, Salt Lake City, Utah, USA. DESIGN: Experimental study. METHODS: For the main experiment, 2 types of reusable phacoemulsification needles were studied. One tip of each type underwent 1, 2, and 3 autoclave sterilizations with the use of detergents followed by thorough rinsing with sterile water between cycles...
September 2016: Journal of Cataract and Refractive Surgery
Konstantinos T Tsaousis, Liliana Werner, Jesus Paulo Perez, He J Li, Nicholas Reiter, Jia J Guan, Nick Mamalis
PURPOSE: To evaluate the elemental composition of phacoemulsification tips and their surface roughness in the microscale. SETTING: John A. Moran Eye Center and Utah Nanofab, College of Engineering, University of Utah, Salt Lake City, Utah, USA. DESIGN: Experimental study. METHODS: Seven types of phacoemulsification tips were studied. The phaco tips were examined through energy-dispersive x-ray spectroscopy (EDS) and x-ray photoelectron spectroscopy (XPS) for elemental composition...
September 2016: Journal of Cataract and Refractive Surgery
Soujanya Kaup, Siddharudha Shivalli, Divyalakshmi Ks, Cynthia Arunachalam, Rejitha Chinnu Varghese
INTRODUCTION: Corneal endothelial damage following phacoemulsification is still one of the major concerns of modern day cataract surgery. Although many techniques have been proposed, the risks of posterior capsular rupture and corneal endothelium damage persist. In theory, damage to the corneal endothelium is minimised by delivering the lowest phaco energy only in the direction necessary to emulsify the lens nucleus. Hence, it is believed that the bevel of the needle should be turned towards the nucleus or the nuclear fragment (ie, bevel-down...
2016: BMJ Open
Ann Sofia Skou Thomsen, Phillip Smith, Yousif Subhi, Morten la Cour, Lilian Tang, George M Saleh, Lars Konge
PURPOSE: To investigate the correlation in performance of cataract surgery between a virtual-reality simulator and real-life surgery using two objective assessment tools with evidence of validity. METHODS: Cataract surgeons with varying levels of experience were included in the study. All participants performed and videorecorded three standard cataract surgeries before completing a proficiency-based test on the EyeSi virtual-reality simulator. Standard cataract surgeries were defined as: (1) surgery performed under local anaesthesia, (2) patient age >60 years, and (3) visual acuity >1/60 preoperatively...
September 29, 2016: Acta Ophthalmologica
Kazim Dhalla, Simon Cousens, Richard Bowman, Mark Wood, Ian Murdoch
INTRODUCTION: In an African setting surgery is generally accepted as the treatment of first choice for glaucoma. A problem with trabeculectomy surgery for the glaucomas is the frequent co-existence and exacerbation of cataract. We report a randomized controlled trial to compare the use of beta radiation with 5FU in combined cataract and glaucoma surgery. PARTICIPANTS AND METHODS: Consenting adults aged >40 years with glaucoma, an IOP>21mmHG and cataract were enrolled and randomised to receive either 1000cG β radiation application or sub-conjunctival 5fluorouracil (5FU) at the time of combined trabeculectomy and phaco-emulsification with lens implant surgery...
2016: PloS One
Mucella Arikan Yorgun, Yasin Toklu, Melek Mutlu, Umut Ozen
AIM: To compare the clinical outcomes of combined 25-gauge pars plana vitrectomy (PPV) and phacoemulsification/posterior chamber intraocular lens (PC-IOL) implantation with vitrectomy alone surgery in patients with various vitreoretinal diseases. METHODS: A total of 306 eyes (145 with PPV alone and 161 with phaco-vitrectomy) were enrolled in this retrospective analysis. The surgical approach was 25-gauge PPV combined with phacoemulsification and PC-IOL implantation at the same time in eyes in phaco-vitrectomy group and only PPV in eyes in vitrectomy alone surgery group...
2016: International Journal of Ophthalmology
Kevin Dunne, Alex J Buller
AIM: To describe a useful technique utilizing lens thickness from biometric data as well as phacoemulsification (phaco) probe tip dimensions, in order to more accurately determine safe groove depth during divide and conquer techniques for cataract surgery. METHODS: Single center, selection of patients for cataract surgery deemed low risk and suitable for surgical teaching cases. Individual lens thickness measurements from biometry were calculated with known phaco tip dimensions to give an individualized safe number of phaco tip depths for grooving during divide and conquer...
2016: Clinical Ophthalmology
Selim Genç, Emre Güler, Hanefi Çakır, Yusuf Özertürk
PURPOSE: To evaluate intraoperative complications of a modified phaco capsulotomy technique and the ophthalmic viscosurgical device (OVD)-assisted capsulorhexis in eyes with intumescent white cataract. SETTING: Lütfi Kırdar Kartal Eye Training and Research Hospital, Department of Ophthalmology, Istanbul, Turkey. DESIGN: Comparative randomized case study. METHODS: Eyes of patients with intumescent white cataract were divided into 2 equal groups...
August 2016: Journal of Cataract and Refractive Surgery
Aeri Yoo, Ki Yeun Nam, Hungwon Tchah, Myoung Joon Kim
PURPOSE: To compare a modified phacoemulsification tip with the established micro tip, in terms of temperature at the corneal wound, efficiency, and chatter events, using the Centurion® Vision system. METHODS: Eighty porcine eyes were randomized into 4 groups: 1)sleeveless conventional 45D MiniFlared ABS® Kelman tip (1.1-mm incision); 2)sleeveless new modified 45D ABS® INTREPID® balanced tip(1.1-mm incision); 3) Kelman tip with own sleeve (2.2-mm incision); 4)Balanced tip with modified 4-rib sleeve (2...
2016: PloS One
Anastasios John Kanellopoulos, George Asimellis
BACKGROUND: Femtosecond-laser assisted clear cornea cataract surgery may hold promise in safer and more effective procedures. We decided to perform a comparative study to standard manual incision phacoemulsification surgery. METHODS: This is a single-center, single-intervention, and prospective comparative data evaluation of 133 consecutive cases subjected to cataract surgery. Group-A (Phaco), manual capsulorhexis & ultrasound phacoemulsification (n = 66); Group-B femtosecond-laser assisted capsulorhexis and lens fragmentation (n = 67), employing the LenSx laser (Alcon Surgical, Ft...
2016: Eye and Vision (London, England)
Sezen Akkaya, Yelda Buyru Özkurt, Sibel Aksoy, Hatice Kübra Kökçen
The purpose of this study is to compare pain experience and cooperation between consecutive surgeries in patients undergoing phacoemulsification in both eyes, using sub-Tenon's local anesthesia without sedation. In this study, 268 patients with bilateral senile cataracts were recruited. All operations were performed without sedation, using a clear corneal phacoemulsification technique and sub-Tenon's local anesthesia, by one of four surgeons. The first surgery was performed on the eye with the higher grade cataract...
July 23, 2016: International Ophthalmology
Hossein Mohammad-Rabei, Elham Mohammad-Rabei, Goldis Espandar, Mohammad Ali Javadi, Mohammad Reza Jafarinasab, Seyed Javad Hashemian, Sepehr Feizi
PURPOSE: To compare the safety and efficacy of three methods for correcting pre-existing astigmatism during phacoemulsification. METHODS: This prospective, comparative, non-randomized study was conducted from March 2010 to January 2011, and included patients with keratometric astigmatism ≥1.25 D undergoing cataract surgery. Astigmatism was corrected using the following approaches: limbal relaxing incisions (LRI) on the steep meridian, extension and suturing of the phaco incision created at the steep meridian (extended-on-axis incision, EOAI), and toric intraocular lens (tIOL) implantation...
April 2016: Journal of Ophthalmic & Vision Research
S Z Tan, L Au
PurposeTo evaluate the safety, efficacy, and the cost of combined phacoemulsification and single iStent insertion in open angle glaucoma (OAG) at 3-years follow-up.MethodsThis was a prospective, uncontrolled, interventional case series. All subjects underwent single iStent implantation combined with cataract surgery by a single surgeon and were followed up over 3 years. Primary outcome measures were the reduction in intraocular pressure (IOP) and number of glaucoma drops at 1, 2, and 3 years. The costs of the procedure vs the cost of continuation of glaucoma drops were calculated and compared in patients who completed 3-years follow-up...
July 8, 2016: Eye
Jaime Zacharias
PURPOSE: Ultrasound activation of phacoemulsification (phaco) tips can create considerable thermal energy that may increase the risk of tissue damage during cataract surgery. The purpose of this study was to define the thermal profiles of three phaco tip designs in simulated surgical conditions. METHODS: In this laboratory investigation, sleeved phaco tips (mini-flared Kelman(®) tip with aspiration bypass port and Intrepid(®) Balanced Tip with aspiration bypass port, and MST A1 bent-mini phaco tip (without aspiration bypass) were tested using an ultrasonic phaco device operated in torsional mode at power levels of 50%, 75%, and 100% amplitude...
2016: Clinical Ophthalmology
T Thevi, S Sahoo
PURPOSE: To analyse the visual outcomes of cases with posterior capsule rupture (PCR) compared to those without PCR following phacoemulsification. The occurrence of posterior capsule rupture during phacoemulsification surgery for cataract can have serious implications in the visual recovery. However, recognition of PCR and proper management can yield a successful visual outcome. This study analysed the visual outcomes of cases with PCR compared to those without PCR. METHODS: This is a case-control study...
April 2016: Medical Journal of Malaysia
Elena Tomilova, Sergey Shukhaev
BACKGROUND: Comparison of different phacoemulsification parameters remains a frequently debated and methodologically challenging area. The focus of this study was twofold: (1) To suggest an accurate and simple in vivo model for comparison of phaco parameters with the use of femtosecond laser technology. (2) To compare parameters of intelligent phaco (IP) torsional and combination ultrasound modes using the proposed model. METHODS: Forty-three eyes underwent femtosecond laser-assisted cataract surgery (FLACS) with the precise division of each nucleus into two equal hemispheres...
August 2016: Graefe's Archive for Clinical and Experimental Ophthalmology
Andrew W Kam, Tony S Chen, Sarah B Wang, Neeranjali S Jain, Aaron Yj Goh, Christopher P Douglas, Penny A McKelvie, Ashish Agar, Robert H Osher, Ian C Francis
BACKGROUND: To identify and classify materials in the vitreous (MIV) observed during phacoemulsification cataract surgery (phaco). DESIGN: Prospective, consecutive, observational case series at one ophthalmic day surgery in Sydney, Australia PARTICIPANTS: 767 consecutive phaco cases. Cases were excluded if there was posterior capsule rupture or vitreous loss intraoperatively. METHODS: For each patient, age, gender, baseline corrected distance visual acuity (CDVA), presence of pseudoexfoliation, nuclear sclerosis grade and phacoemulsification ultrasound time were recorded...
June 17, 2016: Clinical & Experimental Ophthalmology
S Bilgin, O Kayikcioglu
PurposeTo present an alternative cataract surgical technique in patients with cataract and intravitreal hemorrhage.MethodsTwelve cases with poor fundus reflex caused by severe vitreus hemorrhage were included in the study. All patients underwent combined phaco surgery and 23-gauge vitrectomy. Chandelier retroillumination was inserted into the infusion trochar during the cataract operations and was used with low power (50-75%) in necessary steps.ResultsWe did not experience phaco complications or complications due to technique during surgery...
August 2016: Eye
Jaime Zacharias
PURPOSE: To compare phacoemulsification (phaco) tip movement, microfluidic dynamics, and tip-to-load interaction between longitudinal, torsional, and elliptical ultrasound (US) modalities. SETTING: Phacodynamics Laboratory, Clínica Oftalmológica, Pasteur, Santiago, Chile. DESIGN: Experimental study. METHODS: All experiments were performed using a fluid-filled optical test chamber and phaco tips that were US power activated...
May 2016: Journal of Cataract and Refractive Surgery
Sasan Moghimi, Hesam Hashemian, Rebecca Chen, Mohammadkarim Johari, Massood Mohammadi, Shan C Lin
PURPOSE: To compare long term efficacy of phacoemulsification in the early management of acute primary angle closure (APAC) after aborting an acute attack and performing laser peripheral iridotomy (LPI). METHODS: In this nonrandomized comparative prospective study, we included 35 subjects presenting with APAC who had responded to medical treatment and LPI with intraocular pressure (IOP) less than 25 mmHg. Twenty patients with visually significant cataract with visual acuity of <20/30 were assigned to the "Phaco/LPI" group and underwent phacoemulsification within 6 weeks of the attack...
September 2015: Journal of Current Ophthalmology
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