[Technologies, techniques and tactics for micro-incision cataract surgery.]
Authors: Fabian E, Maier M
Ultra-sound (US) phaco-emulsification is currently developing from a small incision to a micro-incision cataract surgery (MICS). Improvements in machine technologies with new US delivery modes with better control of irrigation and aspiration, with smaller phacotips and sleeves and with new intraocular lenses and injector systems for implantations through incisions less than 2 mm wide. Therefore, the most suitable method for surgery can be selected for each individual eye situation. Further improvements of intra-ocular lenses for implantation through incisions less than 2 mm wide would be desirable.
PMID: 20130886 [PubMed - as supplied by publisher] (Source: Der Ophthalmologe)...
POSTED 02/04/2010 at 06:00 PM --
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Computer Simulation Tool Supplements Residents' Training In Cataract Surgery
The Massachusetts Eye and Ear Infirmary Cataract Surgery Trainer, a virtual training tool which helps to train physicians to perform cataract surgery, has been shown to enhance teaching in cataract surgery when compared to traditional teaching methods. The results of a multi-center study evaluating the program's effectiveness as a supplement to traditional teaching tools was published in the February issue of Ophthalmology. Cataract surgery is the most frequently performed surgery in the United States on people over 65 years old, yet it is one of the most difficult surgeries to learn... (Source: Health News from Medical News Today)...
POSTED 02/04/2010 at 02:00 AM --
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Computer Simulation Tool Supplements Residents' Training In Cataract Surgery
The Massachusetts Eye and Ear Infirmary Cataract Surgery Trainer, a virtual training tool which helps to train physicians to perform cataract surgery, has been shown to enhance teaching in cataract surgery when compared to traditional teaching methods... (Source: IT / Internet / E-mail News From Medical News Today)...
POSTED 02/04/2010 at 02:00 AM --
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David F. Chang (ed): Curbside Consultation in Cataract Surgery
Content Type Journal ArticleCategory Book ReviewDOI 10.1007/s00417-009-1280-6Authors
Shimon Rumelt, Western Galilee–Nahariya Medical Center Department of Ophthalmology Nahariya Israel
Journal Graefe's Archive for Clinical and Experimental OphthalmologyOnline ISSN 1435-702XPrint ISSN 0721-832X (Source: Graefe's Archive for Clinical and Experimental Ophthalmology)...
POSTED 02/03/2010 at 11:55 AM --
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Inferior rectus paresis and medial rectus overaction following retrobulbar anesthesia for cataract surgery
Abstract Strabismus is a well recognized complication of retrobulbar anesthesia for cataract surgery. This may manifest as either paresis
or sometimes contracture (overaction) in the late stage. Management of the patient is tailored to the individual case. Herein,
we report a patient with inferior rectus paresis and medial rectus overaction after retrobulbar anesthesia. The presenting
symptom was diplopia increasing on downgaze, which improved with medial rectus recession and plication of the inferior rectus.
Content Type Journal ArticleCategory Case ReportDOI 10.1007/s10792-010-9342-7Authors
R. Muralidhar, Aravind Eye Hospital Madurai IndiaP. Vijayalakshmi, Aravind Eye Hospital Madurai IndiaAnil K. Gunda, Aravind Eye Hospital Madurai India
Journal International O......
POSTED 02/03/2010 at 12:49 AM --
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Mass. Eye and Ear Infirmary Cataract Surgery Trainer teaches residents cataract surgery
(Massachusetts Eye and Ear Infirmary) The Massachusetts Eye and Ear Infirmary Cataract Surgery Trainer, a virtual training tool which helps to train physicians to perform cataract surgery, has been shown to enhance teaching in cataract surgery when compared to traditional teaching methods. The results of a multi-center study evaluating the program's effectiveness as a supplement to traditional teaching tools was published in the February issue of Ophthalmology. (Source: EurekAlert! - Medicine and Health)...
POSTED 02/01/2010 at 11:00 PM --
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Evaluation of the analgesic effect of intracameral lidocaine hydrochloride injection on intraoperative and postoperative pain in healthy dogs undergoing phacoemulsification.
Conclusions and Clinical Relevance-Intracameral lidocaine injection had significant analgesic effects in dogs undergoing cataract surgery. Results of this study suggest the value of intracameral lidocaine injection as an analgesic for intraocular surgery in dogs.
PMID: 20113230 [PubMed - in process] (Source: American Journal of Veterinary Research)...
POSTED 01/31/2010 at 06:00 PM --
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Endophthalmitis
is the scourge of cataract surgeons but fortunately is a rare, although serious, event. Infection origin is almost always exogenous, which means the infecting organism gains access to the inner eye during surgery or early in the postoperative period. Asepsis and antisepsis are the keys to operative risk; ocular hygiene and topical antibiotic agents are the key to eliminating postoperative risk. Despite attempts to sterilize the ocular surface prior to surgical intervention, several studies have confirmed that bacterial contamination may survive the operative session and thereby gain access to the inner eye during surgery. Thereafter, wound security or lack of it may allow ingress of bacterial contamination, including suture presence or removal in the early postoperative period. (Source: J......
POSTED 01/31/2010 at 06:00 PM --
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Crossed-swords, capsule-pinch technique for capsulotomy in pediatric and/or loose lens cataract extraction
Puncturing the anterior capsule in a patient with a very soft lens, an elastic capsule, and/or deficient zonular countertraction can be challenging even with a sharp needle or blade. The crossed-swords, capsule-pinch technique capitalizes on opposing forces from 2 needles directed toward each other with a “pinch” of the capsule between their tips. This affords a controlled and facile puncture of the capsule without creating stress on the zonules or anteroposterior displacement of the lens.Financial Disclosure: Neither author has a financial or proprietary interest in any material or method mentioned. (Source: Journal of Cataract and Refractive Surgery)...
POSTED 01/31/2010 at 06:00 PM --
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Repositioning free laser in situ keratomileusis flaps
We describe a protocol for adequate repositioning of free laser in situ keratomileusis (LASIK) corneal flaps created by a Moria M2 microkeratome even in the absence of fiduciary marks. In an enucleated porcine globe, a free flap was created by initially placing a longitudinal incision at the proposed hinge site followed by activating the forward pass of the automated microkeratome. A protocol was devised based on placement of a positioning dot on the free flap before the flap is retrieved from the microkeratome head. Preplaced surgical landmarks were used as a guide to determine the correct alignment of the free flap. Adequate orientation of the free flap to the stromal bed was achieved in 9 porcine eyes using the positioning dot method. The technique is applicable to the Moria M2 microker......
POSTED 01/31/2010 at 06:00 PM --
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Effectiveness of intracameral cefuroxime in preventing endophthalmitis after cataract surgery: Ten-year comparative study
Purpose: To determine the differences in the endophthalmitis rates in cataract surgery before and after prophylactic use of intracameral cefuroxime.Setting: University Hospital Fundación Alcorcón, Madrid, Spain.Methods: This prospective study evaluated patients who had cataract surgery at a university eye center over a 10-year period (1999 to 2008). Since the protocol's approval by the Hospital Board in October 2005 to the end of the 10-year period, cataract patients were routinely treated with prophylactic intracameral cefuroxime. A database was used to measure the occurrence of endophthalmitis postoperatively. Then, the incidence of endophthalmitis before and after generalized use of prophylactic cefuroxime was compared. The effect of cefuroxime was evaluated by the relative risk.Resul......
POSTED 01/31/2010 at 06:00 PM --
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Role of anterior capsule polishing in residual lens epithelial cell proliferation
Conclusions: Anterior capsule polishing, although it removed many LECs, did not decrease residual cell growth and, conversely, enhanced cell proliferation in capsular bag cultures. This might explain why polishing does not reduce PCO in clinical studies.Financial Disclosure: No author has a financial or proprietary interest in any material or method mentioned. (Source: Journal of Cataract and Refractive Surgery)...
POSTED 01/31/2010 at 06:00 PM --
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Assessment of toric intraocular lens alignment by a refractive power/corneal analyzer system and slitlamp observation
Purpose: To assess the validity of an internal optical path difference map of a refractive power/corneal analyzer system in determining the alignment of toric intraocular lenses (IOLs).Settings: Private practices, Spring Hill, Brisbane, and Chermside, Australia.Methods: This retrospective study comprised patients with more than 1.5 diopters of preexisting corneal astigmatism who had phacoemulsification and AcrySof toric IOL implantation. Preoperatively, the surgical eye was marked at the slitlamp microscope using a 4-point technique. The desired IOL orientation was marked with a Mendez marker based on the steep corneal axis. The toric IOL axis was measured 3 weeks postoperatively by rotating the slitlamp beam to align with the IOL axis indicator marks and using the Internal OPD Map on the ......
POSTED 01/31/2010 at 06:00 PM --
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Intraocular lens power calculation: Clinical comparison of 2 optical biometry devices
Conclusion: The OLCR biometry device provided precise and valid measurements and thus can be used for the preoperative examination of cataract patients.Financial Disclosure: No author has a financial or proprietary interest in any material or method mentioned. (Source: Journal of Cataract and Refractive Surgery)...
POSTED 01/31/2010 at 06:00 PM --
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Magnetic resonance imaging of the anteroposterior position and thickness of the aging, accommodating, phakic, and pseudophakic ciliary muscle
Conclusions: Presbyopia-correction strategies cannot rely on accommodative anterior movement of the ciliary muscle. Forces on the uvea by crystalline lens–pupillary margin contact may increase with accommodation and lens growth, producing accommodative and age-dependent increases in muscle thickness and significant age-dependent anterior muscle displacement. Intraocular lens implantation removed these forces, allowing choroidal elasticity to restore the muscle to a youthful position; however, the increase in thickness was permanent and likely due to an age-dependent increase in connective tissue. This supports the geometric theory of presbyopia development and that the mechanical forces in human accommodation and presbyopia are very different from those in the rhesus monkey model.Financi......
POSTED 01/31/2010 at 06:00 PM --
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Preoperative cataract grading by Scheimpflug imaging and effect on operative fluidics and phacoemulsification energy
Conclusion: Preoperatively adjusting phaco parameters based on cataract grade helped improve overall efficiency by reducing the amount of energy and fluid used in the eye and reducing overall phaco time.Financial Disclosure: The author has no financial or proprietary interest in any material or method mentioned. Additional disclosures are found in the footnotes. (Source: Journal of Cataract and Refractive Surgery)...
POSTED 01/31/2010 at 06:00 PM --
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Intermediate results of sutureless intrascleral posterior chamber intraocular lens fixation
Conclusion: Fixation of PC IOL haptics in a limbus-parallel scleral tunnel provided exact centration and axial stability of the IOL and prevented distortion and subluxation in most cases.Financial Disclosure: No author has a financial or proprietary interest in any material or method mentioned. (Source: Journal of Cataract and Refractive Surgery)...
POSTED 01/31/2010 at 06:00 PM --
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Laser-assisted subepithelial keratectomy for bilateral hyperopia and hyperopic anisometropic amblyopia in children: One-year outcomes
Conclusion: Laser-assisted subepithelial keratectomy improved visual acuity in pediatric hyperopia with or without associated hyperopic anisometropic amblyopia.Financial Disclosure: No author has a financial or proprietary interest in any material or method mentioned. (Source: Journal of Cataract and Refractive Surgery)...
POSTED 01/31/2010 at 06:00 PM --
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Ocular blood-flow hemodynamics before and after application of a laser in situ keratomileusis ring
Conclusion: In normal healthy eyes, once suction was released, blood-flow responses returned immediately to normal levels.Financial Disclosure: No author has a financial or proprietary interest in any material or method mentioned. (Source: Journal of Cataract and Refractive Surgery)...
POSTED 01/31/2010 at 06:00 PM --
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Collagen crosslinking with riboflavin and ultraviolet-A in eyes with pseudophakic bullous keratopathy
Purpose: To evaluate the safety and efficacy of corneal collagen crosslinking (CXL) in patients with painful pseudophakic bullous keratopathy (PBK).Setting: University of São Paulo, São Paulo and Sadalla Amin Ghanem Eye Hospital, Joinville, Santa Catarina, Brazil.Methods: This prospective study included consecutive eyes with PBK that had CXL. After a 9.0 mm epithelial removal, riboflavin 0.1% with dextran 20% was applied for 30 minutes followed by ultraviolet-A irradiation (370 nm, 3 mW/cm2). Therapeutic contact lenses were placed for 1 week. Corneal transparency, central corneal thickness (CCT), and ocular pain were assessed preoperatively and 1 and 6 months postoperatively. Statistical analysis was by paired t tests.Results: Fourteen patients (14 eyes) with a mean age 71.14 years ± 11......
POSTED 01/31/2010 at 06:00 PM --
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