EyeWorld Asia-Pacific June 2013 Issue

45 EWAP rEfrActivE June 2013 Boston Foundation for Sight, Needham, Mass, USA. The foundation is well known for its BostonSight PROSE treatment, which uses rigid gas permeable large diameter prosthetic devices custom fit to the eye to restore sight. Dr. Yoon and his lab recently collaborated with the Boston Foundation for Sight to correct HOAs in patients using the foundation’s prosthetic devices. In a presentation given at last year’s Association for Research in Vision and Ophthalmology meeting, Drs. Yoon, Jacobs, and other researchers shared the results from six patients (11 eyes) with advanced keratoconus. Despite a customized fit, they still had uncorrected HOAs limiting vision. Coma was the most dominant HOA. Most of the HOAs were corrected with the device. “Customized correction resulted in a mean improvement of 1.9 Snellen lines,” investigators wrote in their abstract. The use of HOA correction also helped to improve contrast sensitivity. However, the average logMAR visual acuity was 0.21 and the average Snellen acuity was 20/32, despite clear media. Investigators concluded that the device may require longer- term neural adaptation instead of measuring immediately after the introduction of customized correction. Prosthetic devices with wavefront-guided HOA correction as designed by Dr. Yoon’s lab are only available now on a research basis, Dr. Jacobs said. A paper with more details about the customized HOA-correcting lens is in press with Optometry & Vision Science, Dr. Yoon said. The Boston Foundation for Sight does currently offer wavefront-optimized optics that improve vision for some keratoconus patients, Dr. Jacobs said. Dr. Yoon believes an HOA- correcting contact lens or prosthetic device could be used in non-keratoconic patients who want super crisp vision. “We’re looking into using this technology in a more or less normal population and maybe including a professional sports player who wants really crisp images. Another important application of this technology is a presbyopia-correcting customized lens with a multifocal design,” Dr. Yoon said. “The good thing is that this is noninvasive technology if patients don’t like it.” Dr. Yoon also believes it is useful to apply the HOA-correcting technology in different ways, just as the lab is doing now. “We have different technology with different lenses, but the goal is the same, to control the higher-order aberrations,” he said. EWAP Editors’ note: Dr. Jacobs is medical director of the Boston Foundation for Sight. Dr. Yoon helped develop the contact lens described in this article. contact information Jacobs : 781-726-7337, djacobs@bostonsight.org Yoon : yoon@cvs.rochester.edu I am quality I am durable I am reusable I am innovative I am effective I am unique I am cost-efficient I am modern I am steel & composite made I am made by Moria I am... by Moria is pleased to introduce coMposites! Composites by Moria is an innovative range of reusable instruments set to push the boundaries of ophthalmic instrumentation. This new generation of instruments offers the quality and precision you would expect from Moria, at a competitive price that will surprise the market. www.moria-surgical.com Exploring - from page 43