Clearly KC host Dr. Melissa Barnett OD sits down with keratoconus guru Dr. Christine Sindt OD, from University of Iowa for a discussion of higher order aberrations (HOA), a common concern of individuals with keratoconus.  Dr. Sindt notes doctors have sympathized with their patients who complain of halos or double vision but until recently could do little to fix the problem.  While the technology is still in its infancy, Dr. Sindt reports understanding of how to correct for the complicated optics that cause glare and ghosting are better appreciated.  Within a few years, she is confident contact lenses will be able to reduce vision issues associated with HOAs.