Topography-wavefront ablations offer solutions
June 1st 2006San Francisco-Patients who had severe night-visiondisturbances after refractive surgery found relief after undergoingtopography-wavefront-supported custom ablations to treat either asmall optical zone, previous decentered ablations, or irregularsurfaces, explained Dan Z. Reinstein, MD, MA(Cantab), FRCSC.
Iris claw phakic refractive IOL gives safe, satisfying results
June 1st 2006San Francisco-Outcomes from one surgeon's initial experiencewith use of the iris-claw phakic refractive IOL (Verisyse, AdvancedMedical Optics) suggest it is an acceptable choice for treatinghigh myopia, said Richard M. Awdeh, MD, at the American Society ofCataract and Refractive Surgery annual meeting.
Accommodating IOL provides full range of vision
June 1st 2006San Francisco-The Synchrony Dual Optic Accommodating IOL(Visiogen) provides good functional vision, that is, a full rangeof visual acuity, in the patients who have had the lens implanted,according to Ivan Ossma-Gomez, MD, who reported on the lens'performance at the American Society of Cataract and RefractiveSurgery annual meeting.
With blended visio, two different multifocals perform better thanone type, surgeon says
June 1st 2006San Francisco-Blended vision with diffractive and refractivemultifocal IOLs offers better visual results in all lightingconditions than bilateral diffractive multifocal technology,explained Henry L. Milne, MD, at the American Society of Cataractand Refractive Surgery annual meeting.
Higher-order aberration interactions with customized ablations needto be neutralized
June 1st 2006San Francisco-Higher-order aberration interactions can occurwith customized ablations, regardless of the laser platform. Withthe development of a new nomogram, University of Rochesterresearchers have been able to neutralize these interactions,providing more predictable visual outcomes, explained Scott M.MacRae, MD, during the American Society of Cataract and RefractiveSurgery annual meeting.
Single intrastromal corneal ring segment best for peripheral cones,results show
June 1st 2006San Francisco-Inferior placement of a single intrastromalcorneal ring segment (Intacs, Addition Technology) appears toafford better outcomes than double-segment placement when treatingkeratoconus and ectasia in eyes with peripheral (paracentral)cones, said Colin C.K. Chan, MD, at the annual meeting of theAmerican Society of Cataract and Refractive Surgery.
Heed early corneal topographic changes before LASIK
June 1st 2006San Francisco-Topography detects the early curvature changeson the anterior corneal surface. And these are precisely thechanges that need to be heeded in patients undergoing refractivesurgery. These changes may have been ignored previously andresulted in the development of vision-threatening ectasia, reportedStephen D. Klyce, PhD, who spoke at the annual meeting of theAmerican Society of Cataract and Refractive Surgery.
Cataract surgery benefit on visual function largely durable
May 15th 2006Lund, Sweden-The effect of cataract surgery for improvingvisual function decreases over time, but a high proportion ofpatients continue to enjoy the benefits of surgery up to 8 yearsafter the procedure, according to a study undertaken by Swedishophthalmologists.
Surgical strategy returns to the surface
May 15th 2006San Francisco-Advanced surface treatment (AST) with the Epi-Kkeratome (Moria) is a significant advance in laser visioncorrection but necessitates special attention to pain relief andvisual recovery, said Henry "Rick" Milne III, MD, a refractivesurgeon in Columbia, SC, who has performed more than 300 cases withthis technique.
Keratoprosthesis offers many advantages in cases of pediatriccorneal opacity
May 15th 2006An impressive track record with the Dohlman-Doane Bostonkeratoprosthesis in adults at high risk for corneal transplantationhas motivated corneal surgeons to use the device in pediatric eyeswith corneal opacities, and the outcomes in those young patientshave been very encouraging.
Essilor now offers Definity lenses nationwide
May 15th 2006Dallas-Essilor of America Inc. now offers Definityprogressive lenses through its network of laboratories and otherselect labs nationwide. Definity lenses feature Dual Add, apatented technology that maximizes available design space of thelens, minimizing peripheral distortion and providing a smoothertransition between all distances.
How to choose the most suitable methods of detecting, followingearly glaucoma
May 15th 2006S?o Paulo, Brazil-Early detection of glaucomatous functionalloss and its progression are facilitated by reliance on a singletest program and use of the computer-assisted interpretation toolsavailable for that technique, said Anders Heijl, MD, PhD, tocolleagues at the World Ophthalmology Congress.
Corneal collagen cross-linking shows early positive effects
May 15th 2006Beverly Hills, CA-Corneal collagen cross-linking withriboflavin (C3-R) appears effective for stabilizing keratometry incorneas that are demonstrating instability associated with avariety of pathologies, according to a study presented by MunishSharma, MD, MBBS.
Microkeratome delivers 80-?m flaps for thin-flap LASIK
May 15th 2006San Francisco-Thin-flap LASIK with the K-4000 microkeratome(Becton Dickinson) is safe and delivers flaps that aresignificantly thinner than with other available heads. Thin-flapLASIK is the preferred choice with the K-4000 microkeratome,according to Rupal S. Shah, MD.