Unexplained visual loss requires thorough exam
March 15th 2006Chicago?Patients with unexplained visual loss are often referred to neuro-ophthalmologists to determine if the problem is associated with the optic nerve or visual pathways. Surprisingly, this is not always the problem, reported Karl C. Golnik, MD, MEd, who spoke during the subspecialty neuro-ophthalmology day at the American Academy of Ophthalmology annual meeting.
Many options to treat nystagmus, more in development
March 15th 2006Baltimore?While once there was little to be done for patients with nystagmus, a series of medications has been discovered over the past 25 years that help many individuals with different forms of the condition, and more options are on the horizon, said David Zee, MD, professor of neurology and ophthalmology, the Wilmer Eye Institute, Johns Hopkins University School of Medicine, Baltimore.
Teenagers may benefit from amblyopia treatment
March 15th 2006Baltimore?Treating amblyopia in older children and teenagers, that is, those over 7 years of age and up to 18 years, may produce positive results. The Pediatric Eye Disease Investigator Group (PEDIG) recently reported that conventional treatments can work in teenagers; however, the magnitude of the benefit varies greatly among individuals, according to Michael X. Repka, MD.
Many factors influence amblyopia treatment efficacy
March 15th 2006Chicago?While treatment for amblyopia is effective, there is no consensus as to what treatment works best. However a number of factors have an impact on treatment efficacy, according to Bruce A. Furr, CO, who spoke at the American Academy of Ophthalmology annual meeting.
Computer-based model supports wavefront-guided LASIK for all eyes
March 15th 2006Chicago?Evaluations of refractive surgery outcomes using a computer-based predictive model indicate that wavefront-guided LASIK results in better visual quality than optimized or conventional LASIK, regardless of the level of preoperative higher-order aberrations (HOAs), said Capt. Steven C. Schallhorn, MD, at the refractive surgery subspecialty day program during the American Academy of Ophthalmology annual meeting.
Wavefront technologies expand options for patients
March 15th 2006By revealing that the first generation of LASIK procedures were inducing higher-order aberrations (HOAs), wavefront technology answered a key question about why outcomes had been less than perfect. At the same time, it raised a new question: How best to use that information to improve outcomes? In response, two different approaches, wavefront-guided (WFG) treatments and wavefront-optimized (WFO) treatments, emerged. So far, the FDA has approved three laser systems for WFG treatments: Alcon's CustomCornea, Advanced Medical Optics' CustomVue, and Bausch & Lomb's Zyoptix. In 2003, the agency approved one system for WFO treatments: WaveLight's AllegrettoWave.
Wavefront-optimnized treatment provides most patients with excellent results, surgeon says
March 15th 2006Lisbon, Portugal?The preliminary results from the ongoing FDA trials of a comparison of wavefront-guided and wavefront-optimized treatments with the Allegretto Excimer Laser (WaveLight Laser Technologie AG) indicate that the two treatments provide similar results, reported Karl G. Stonecipher, MD, at the European Society of Cataract and Refractive Surgeons annual meeting.
CK another option for presbyopia
March 15th 2006Lisbon, Portugal?Conductive keratoplasty (CK) achieves improved near vision in patients with presbyopia who have undergone a successful previous LASIK or PRK procedure. CK is the next logical refractive step for these patients as they age and want to remain free of spectacles, according to Daniel Durrie, MD.
Study characterizes course of corneal healing after wavefront-guided PRK
March 15th 2006Chicago?In-depth studies of corneal healing after wavefront-guided PRK are providing an understanding of the postoperative course of changes in refractive errors and wavefront aberrations, said Keith Holliday, PhD, at the refractive surgery subspecialty day meeting sponsored by the International Society of Refractive Surgery of the American Academy of Ophthalmology.
Current presbyopia-correcting technology good despite limited accommodative power
March 15th 2006FDA approval of the crystalens (eyeonics), in addition to the AcrySof ReSTOR (Alcon Laboratories) and ReZoom multifocal (AMO) IOLs, allows ophthalmologists the ability to offer various choices of presbyopia-correcting technology with the hope of providing a surgical procedure that will greatly reduce or eliminate their patients' dependence on glasses following cataract surgery and refractive lens exchange. Hype and rumor regarding accommodating lens technology has created confusion regarding just how effective or ineffective these particular lenses may be. A review of the results in peer-reviewed medical literature in addition to an analysis of theoretical considerations with regard to the limits of accommodation provided by these lenses should clarify their ultimate usefulness in the average ophthalmic practice.
Retrospective study links use of short-cycle sterilization to TASS
March 15th 2006Chicago?Contamination of short-cycle sterilizer reservoirs may be responsible for an outbreak of postoperative endophthalmitis/toxic anterior segment syndrome (TASS) in a multisurgeon clinic, said Simon P. Holland, MD, FRCSC, at the annual meeting of the American Academy of Ophthalmology.
Clinician judgment necessary if using new fluoroquinolones
March 15th 2006Chicago?Evidence of a rising incidence of acute endophthalmitis postcataract surgery has intensified attention regarding the role of antibiotic prophylaxis, but the jury is still out on the efficacy of topical and intracameral therapy for reducing the risk of this sight-threatening infection, said Robert W. Snyder, MD, PhD, at the American Academy of Ophthalmology annual meeting.
Cataract prevalence higher among Hispanic population
March 15th 2006Baltimore?The prevalence of cataract is high among the Hispanic population of Mexican descent living in the United States?2.8%, according to a recent report from the Proyecto VER (Vision and Eye Research) survey of Hispanic individuals living in southern Arizona. A number of barriers, including lack of medical insurance and difficulty speaking English, impede these individuals in obtaining cataract surgery, according to Aimee Teo Broman, MA.
Venture capitalists back device firm incubator
March 15th 2006Menlo Park, CA?Three venture capital firms have promised $2.4 million in seed funding to start ForSight Labs, a new incubator of firms to launch ophthalmic medical device technologies. Representatives of Morgenthaler Ventures, Split Rock Partners, and Versant Ventures will also take seats on the ForSight Labs board of directors.
Medicare reimbursement process considered top AAO priority
March 15th 2006Baltimore?The Medicare reimbursement system may seem like a bowl of alphabet soup, but physicians can't afford to ignore what lies behind the acronyms because of the enormous impact on their practice bottom lines, said Michael X. Repka, MD, secretary for federal affairs for the American Academy of Ophthalmology (AAO).
System affords efficient phaco, stable chambers
March 15th 2006Maui, HI?HyperCruise using the Cruise Control device (STAAR Surgical) enables high-vacuum, low-energy phacoemulsification with stable fluid dynamics for cataract removal that is safe, efficient, and results in excellent patient outcomes, reported Elizabeth A. Davis, MD, at Hawaiian Eye 2006.
Intervention can benefit some nursing home residents
March 15th 2006Baltimore?A trial program that provided support and advice to older nursing home residents with poor vision improved their access to cataract surgery substantially. But the debilitated condition of many of those residents led to hesitation about surgery not only from physicians looking after the older people but also from their guardians, according to ophthalmologists at the Johns Hopkins University's Wilmer Eye Institute, Baltimore.
Consider secondary hydrodissection if primary maneuver fails
March 15th 2006Baltimore?Secondary hydrodissection is a valuable technique for enabling safe and efficient phacoemulsification in eyes with a softer crystalline lens that does not initially rotate in the capsular bag to allow use of standard cracking and chopping techniques, said John D. Gottsch, MD.
Technique, sizing can minimize potential phakic IOL complications
March 15th 2006Chicago?Cataract and glaucoma can occur in eyes with phakic IOLs, but the risk of those complications can often be minimized by careful surgical technique and IOL sizing, said Antonio Marinho, MD, PhD, at the refractive surgery subspecialty day meeting sponsored by the International Society of Refractive Surgery of the American Academy of Ophthalmology.