New surgical system maintains stable chamber during quadrant removal
July 1st 2008A new micro-coaxial surgical system (Intrepid, Alcon Laboratories), featuring a low-compliant fluid management system with low-compliant tubing, suppressed surge and maintained an equivalently satisfactory stable chamber during quadrant removal at a lower bottle height-up to 35 cm less-compared with another fluidics management system by the same manufacturer (Infiniti, Alcon Laboratories), 90 cm compared with 125 cm.
Repositioning, IOL exchange result in similar outcomes for decentered, dislocated lenses
July 1st 2008Repositioning using scleral suturing and iris suturing of IOLs and IOL exchange result in similar outcomes for lenses that have decentered or dislocated. Repositioning of the lenses can be associated with redislocation, and IOL exchange can be associated with retinal detachment and development of endophthalmitis. The preferred approach should be individualized to each patient by considering several factors, the most important of which are the material and position of the lens.
Preoperative AS-OCT personalizes cataract surgery
July 1st 2008Anterior segment optical coherence tomography (AS-OCT) performed preoperatively with a proprietary system (Visante, Carl Zeiss Meditec) in patients with very shallow anterior chambers who are undergoing cataract surgery improves the safety of the procedure. AS-OCT allows surgeons to modify the surgical strategy. Double filling with cohesive and dispersive ophthalmic viscoelastic devices can preserve the surgical space.
Textured surgical gloves implicated in TASS outbreaks
July 1st 2008Toxic anterior segment syndrome (TASS) outbreaks occurring at four cataract surgery centers in Canada launched a comprehensive investigation to identify the possible cause(s). Use of a specific brand of textured surgical gloves (Triumph LT, Medline) was identified as a factor, and new cases of TASS have been avoided since use of that particular product was discontinued.
Chandelier endoillumination enhances surgical safety
July 1st 2008The use of 25-gauge transconjunctival chandelier endoillumination during cataract surgery in patients with severely opacified corneas is proving to be a boon for surgeons and patients alike. The technique facilitates clear intraocular visualization, and because the chandelier does not have to be held in place, the surgeon can perform capsulorrhexis and subsequent manipulations bimanually as usual.
Update: surgical therapy for retinal venous occlusive disease
July 1st 2008Radial optic neurotomy and peeling of the internal limiting membrane seems to be a surgical treatment for retinal venous occlusive disease that can obtain permanent reperfusion of the retina, in contrast to intravitreal drugs that have only a temporary effect.
Trends track effects of chemotherapy versus radiation
July 1st 2008Trends found in a small retrospective study comparing primary chemotherapy and primary external-beam radiation therapy in the treatment of retinoblastoma could set the stage for a more comprehensive, international study. The initial study of 25 cases of bilateral retinoblastoma meeting strict inclusion criteria found that chemotherapy was associated with a slightly higher frequency of enucleation whereas radiation was associated with a slightly higher frequency of death.
Survey assesses life quality for adults with strabismus
July 1st 2008A 20-item questionnaire is expected to be useful for evaluating the health-related quality of life of adults with strabismus and practical application in a clinical setting. The patient-derived questionnaire assesses both psychosocial and functional aspects of strabismus.
Systemic, circadian factors challenge IOP control measures
July 1st 2008The challenging task of controlling patients' IOP can be made more difficult by several factors that can cause fluctuations in IOP. Those factors include posture, blood pressure, cerebrospinal fluid pressure, and even sleep, and they can hinder physicians' efforts to provide consistent control of IOP.
LASIK: specialists debate the flap about glaucoma
July 1st 2008Performing LASIK in patients with glaucoma should be carefully considered before making the commitment because of changes in the eye that might result in lower IOP measurements, according to two ophthalmologists. PRK, however, might be a better option for this subgroup of patients, suggests one surgeon.
Telemedicine: well-established in ROP
June 30th 2008The value of telemedicine in patients with retinopathy of prematurity (ROP) is well established, according to Birgit Lorenz, MD, Pediatric Department of Ophthalmology, University of Regensburg, Germany. The technology provides opportunities for research, allows expert discussion by specialists worldwide, and allows objective evaluation of the pathology.
HIV drugs needed globally to control the disease long term
June 30th 2008HIV has become a manageable chronic disease, but that is true only in developed countries with a relatively small number of HIV cases. It is possible to have a normal lifespan with controlled disease using the drugs that are currently available, but this treatment is needed globally, according to William Lynn, MD, Department of Infectious Disease, Ealing Hospital, London.
Consider artificial cornea in patients with multiple graft rejections
June 30th 2008The use of an artificial cornea in patients who have experienced multiple immunologic graft rejections is more likely to result in good-quality vision than is performing another corneal transplant, said Michael W. Belin, MD, Albany Medical College, Albany, NY.
Compliance likely an issue when amblyopia therapy fails
June 30th 2008When treating a child with amblyopia, what steps do you take when the Pediatric Eye Disease Investigator Group (PEDIG) guidelines do not work? The first thing to consider is whether you're getting poor compliance with your therapy, said Lionel Kowal, MD, FRACOphth, FRACS, Ophthalmology Eye and Ear Hospital, Melbourne, Australia.
Patch or atropine? Either offers lasting benefits in amblyopia
June 30th 2008Either patching or atropine sulfate 1% to occlude the sound eye offers lasting benefits to patients with amblyopia, according to Michael X. Repka, MD, Wilmer Eye Institute, Johns Hopkins University School of Medicine, Baltimore. Atropine is not approved for use in ambyopia, he said.
Progressive thinking in imaging, risk factors provide better understanding of ACG
June 29th 2008In a symposium, entitled ?Progressive thinking: advances in the diagnosis assessment and management of glaucoma,? a panel of glaucoma specialists provided their expertise on imaging, risk factors that determine glaucoma progression, and understanding angle-closure glaucoma (ACG).
WOC symposium: Individualized therapy provides best glaucoma management
June 29th 2008Glaucoma progresses at different rates among patients, and this variability poses a challenge for the ophthalmologist trying to manage the disease. IOP is a well-known risk factor and often is monitored carefully in patients with glaucoma. However, visual field and optic nerve deterioration are direct indicators of progression, and their status also should be considered when developing an initial treatment plan.
Mixing and matching IOLs not always to patient's advantage
June 29th 2008Using various types of IOLs in the same patient has been trumpeted as a way to achieve better vision correction than bilaterally implanting the same IOL. Yet, this concept of "mix and match" is not quite that simple, said Rubens Belfort, MD, Vision Institute, Federal University, Sao Paulo, Brazil.
Refractive errors after PK improve after surface ablation and MMC
June 29th 2008Surface excimer laser and application of topical mitomycin C 0.2% results in increased vision when used to treat refractive errors after penetrating keratoplasty, said Michael Lawless, FRACO, from the Vision Eye Institute, Chatswood, New South Wales, Australia.
Proper IOL power challenging in refractive patients
June 29th 2008Achieving the proper IOL power for patients who have had a refractive procedure such as LASIK, PRK, or RK can be challenging, and taking more measurements leads to greater accuracy, said Jack T. Holladay, MD, MSEE, FACS, Holladay LASIK Institute and Baylor College of Medicine, Houston.
Neuroprotectants show positive effect on RGCs in rat model of glaucoma
June 29th 2008Erythropoietin (EPO), ciliary neurotrophic factor (CNTF), and wolfberry seem to provide neuroprotection of retinal ganglion cells in a rat model of ocular hypertension, according to Kwoh-fai So, PhD, chairman of the Department of Anatomy, University of Hong Kong.
Telemedicine may help identify, treat diabetic retinopathy
June 29th 2008With diabetes cases worldwide expected to double in the first 30 years of the 21st century, telemedicine might be a pathway to ensuring that more patients receive care, and thus, prevent complications from retinopathy, said P. Lloyd Hildebrand, MD, Dean A. McGee Eye Institute, Oklahoma University Health Sciences Center.