The human eye may be able to self-adjust and partially compensate for optical aberrations caused by LASIK eye surgery, according to a new study. LASIK, PRK and other corneal refractive surgery have been shown to increase higher-order aberrations in the eye that can affect visual clarity. Even customized, wavefront-guided LASIK typically increases these aberrations to some extent.
Eye may adjust to aberrations caused by LASIK
June 8, 2010Toric phakic IOL provides better night driving vision than PRK
June 1, 2010An implantable phakic IOL designed to correct both myopia and astigmatism improves simulated night driving vision more than PRK, according to a new study. Researchers in San Diego compared changes in simulated night driving performance among patients moderate to high myopia and astigmatism after treatment with either surgical implantation of a toric Visian Implantable Collamer Lens (STAAR Surgical; Monrovia, Calif.) or conventional PRK surgery.
ReSTOR multifocal IOL enables many to be glasses-free after cataract surgery
May 25, 2010The AcrySof ReSTOR multifocal IOL (Alcon) enables over 87 percent of patients to be glasses-free after cataract surgery when implanted in both eyes. That’s the finding of researchers in France and Spain who conducted a study of 304 patients with an average age of 65.6 years who underwent bilateral implantation of the multifocal lens.
Blue-blocking IOLs fail to provide measureable advantages over clear IOLs
May 18, 2010Intraocular lenses (IOLs) that block both ultraviolet (UV) radiation and blue visible light were introduced for use in cataract surgery in the 1990s. It was believed that the light-absorbing nature of these lens implants might offer advantages over clear lens implants, including providing sharper vision, better contrast sensitivity and reduced risk of macular degeneration.
Vision training improves cataract surgery outcomes
May 6, 2010Visual outcomes after cataract surgery can be improved with a program of computer-based vision training. That’s the finding of a study presented this week at the 2010 annual meeting of the Association for Research in Vision and Ophthalmology (ARVO).
Toric IOLs produce excellent visual outcomes
April 22, 2010Toric IOLs — premium intraocular lenses designed to correct astigmatism during cataract surgery and refractive lens exchange — produce excellent visual outcomes and high patient satisfaction, according to a new study. Researchers in Canada evaluated the bilateral implantation of AcrySof toric refractive IOLs (Alcon; Fort Worth, Texas) in subjects undergoing cataract surgery in both eyes.
Surgeons discuss humidity, corneal hydration and laser eye surgery
April 20, 2010Refractive surgeons agree that the condition of the surface of the eye (cornea) before, during and after LASIK and other laser eye surgery is an important factor in visual outcomes of the surgery. In the April 2010 issue of EyeWorld, a panel of eye surgeons discussed the importance of the ambient humidity and temperature in the laser surgery suite and eye hydration before, during and after surgery to achieving predictable, high-quality visual results.
Surgeon touts monovision cataract surgery
April 15, 2010What’s the best way to see clearly at all distances without eyeglasses after cataract surgery? Some refractive surgeons feel the answer is monovision. Monovision is the practice of fully correcting one eye so it sees perfectly well for distance vision, and making the other (usually non-dominant) eye mildly nearsighted so it provides acceptable near vision without reading glasses.
Surgeons discuss advantages of refractive lens exchange (RLE)
April 13, 2010Eye surgeons Stanley Berke, MD, (New York, N.Y.) and Jason Stahl, MD, (Kansas City, Kan.) discuss the advantages of refractive lens exchange (RLE) for patients who may not be ideal candidates for LASIK or other laser vision correction procedures. In particular, the RLE procedure may be a better vision correction option for older individuals who have early age-related lens changes and are at risk of developing cataracts.
Bausch & Lomb celebrates Crystalens 10-year anniversary
April 9, 2010Bausch & Lomb (Rochester, N.Y.) announced today that it is celebrating the 10-year anniversary of its Crystalens accommodating intraocular lens (IOL) at the 2010 annual meeting of the American Society of Cataract and Refractive Surgery (ASCRS) being held in Boston, April 9-14. Crystalens currently is the only accommodating IOL approved by the FDA for use in cataract surgery performed in the United States.