Phakic presbyopic lens allows for good distance, near vision
September 15th 2004San Diego-The NewLife phakic presbyopic IOL (IOLTech) provides good distance and near vision, but patients who are candidates for implantation must be chosen carefully to obtain the best results, according to Laurent Gauthier, MD.
Blue-light-absorbing material provides better contrast for patients with IOL
September 15th 2004San Diego-The AcrySof Natural Lens (Alcon Laboratories Inc.) has a blue-light-absorbing material in its design, which seems to provide better contrast for patients compared with conventional IOLs that have conventional ultraviolet-blocking materials.
Microincision cataract surgery may be more efficient with phaco system
September 15th 2004San Diego-The Infiniti Vision Phacoemulsification System (Alcon Laboratories Inc.) can safely and effectively perform microincision cataract surgery. The results using a 1.5-mm incision or less from the first 50 cataract cases performed with the system showed that the technique uses significantly less power in the eye than a conventional phacoemulsification technique, according to Jorge L. Alio, MD, from VISSUM Instituto Oftalmologico de Alicante, Universidad Miguel Hernandez, Alicante, Spain.
Six-month clinical results positive for dual-optic IOL
September 15th 2004San Diego-First trial results with the Synchrony dual-optic accommodative IOL (Visiogen Inc.) indicate that this first-generation lens is safe and performs well. However, lens power calculations should improve via more IOL implantation and calculation adjustment, according to Gerd Auffarth, MD.
CTR enhances stability, centration of capsular bag
September 15th 2004Cataract surgeons in the United States now have at their disposal an exceptionally useful and beneficial device, the capsular tension ring (CTR), available from two different sources (Morcher Capsular Tension Ring, FCI Ophthalmics; StabilEyes, Advanced Medical Optics Inc.). A simple ring of polymethylmethacrylate (PMMA) with an eyelet at either end, the ring may be inserted into the capsular bag to enhance stability and centration. I have had the opportunity to employ this device and would like to share my current view of its proper use, benefits, and risks.
CTR enhances stability, centration of capsular bag
September 15th 2004Cataract surgeons in the United States now have at their disposal an exceptionally useful and beneficial device, the capsular tension ring (CTR), available from two different sources (Morcher Capsular Tension Ring, FCI Ophthalmics; StabilEyes, Advanced Medical Optics Inc.). A simple ring of polymethylmethacrylate (PMMA) with an eyelet at either end, the ring may be inserted into the capsular bag to enhance stability and centration. I have had the opportunity to employ this device and would like to share my current view of its proper use, benefits, and risks.
Principles leading to contact lenses date to 15th century
September 15th 2004Contact lens use, as we know it today, began in the late 1940s with the introduction of the corneal contact lens, although sclero-corneal contact lenses were first used in the late 1880s. Even though use of contact lenses is approximately 120 years old, the basic concepts and the physiological optical principles leading to the clinical development of the contact lens date back to the 15th century.
Note differences between optic nerve diseases
September 15th 2004Los Angeles-Chronic progressive optic neuritis or optic nerve sheath meningioma? Until fairly recently, differentiating these two clinical entities would not have affected the clinical outcome because of the lack of an established safe, efficacious treatment for either condition. However, things have changed, said Howard R. Krauss, MD.
Dr. Cioffi brings wealth of information to post
September 15th 2004George A. (Jack) Cioffi, MD, is board-certified in ophthalmology. He earned his medical degree from the University of South Carolina and completed his residency in ophthalmology at the University of Maryland and fellowship inresearch and clinical glaucomaat Devers Eye Institute.
Allergan enters patent battle over generic version of brimonidine tartrate solution
September 15th 2004Irvine, CA-Allergan Inc. said it has filed a lawsuit against Alcon Laboratories Inc. claiming that the Fort Worth, TX company infringed upon Allergan's patents for brimonidine tartrate ophthalmic solution 0.15% to manufacture a generic alternative to its Alphagan P drops.
FDA advisory group likes Macugen but delays formal vote for now
September 15th 2004New York-Members of the FDA's advisory committee reviewing pegaptanib sodium injection (Macugen) for the treatment of neovascular age-related macular degeneration say they are "impressed" with the drug but declined to take a formal vote.
Telescope may serve as permanent prosthesis for bilateral AMD
September 15th 2004San Diego-An implantable miniature telescope in the capsular bag provides a permanent visual prosthetic device for patients who are legally blind from bilateral age-related macular degeneration (AMD). While there is a learning curve, an early assessment of the implantation indicates that anterior segment surgeons are familiar with the standard phacoemulsification and manual extracapsular surgical skills used for this procedure, according to David F. Chang, MD.
Multifocal ablations are option for correcting presbyopia
September 15th 2004Multifocal ablations have been gaining ground for the correction of presbyopia in the past year. Here at the University of Ottawa we have been studying this approach with the VISX STAR S4 excimer laser, with promising results as many patients are able to achieve excellent near and distance acuity.
RLE for high myopia considered safe, effective in short term
September 15th 2004San Diego-With the availability of foldable IOLs able to correct up to -31 D of spherical error, refractive lens exchange (RLE) for high myopia is now an option for patients hoping to achieve a good refractive outcome. However, patients will need to be monitored long term for potential complications, such as retinal detachments and posterior capsular opacification (PCO), explained Thomas Kohnen, MD, who spoke during the American Society of Cataract and Refractive Surgery annual meeting.
CK effective in low-level hyperopia, hyperopic astigmatism
September 15th 2004San Diego-Conductive keratoplasty (CK) is proving to be a versatile procedure that also can be used as an off-label procedure to enhance the vision of patients who have undergone cataract extraction. The visual results were excellent and patients expressed satisfaction. CK may be a more attractive procedure for this patient group because of safety and economic considerations, according to Louis D. "Skip" Nichamin, MD.
Wavefront measurement methods discussed
September 15th 2004The only constant in the relatively young life of refractive surgery has been change. Even now as our patients reap the rewards of decades of research in the form of customized wavefront ablation, currently unforeseen improvements are inevitable.