OCT 2012

EyeWorld is the official news magazine of the American Society of Cataract & Refractive Surgery.

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October 2012 Calif. The technique also induced 1.5 D less of astigmatism and fewer aberrations when compared to con- ventional transplants using a trephine, Dr. Steinert said. Femtosecond laser-assisted ker- atoplasty incisions also allow for bet- ter initial incision integrity because the surgeon can avoid excess suture tightness as well as more surface area in the incision, which improves wound healing and allows for earlier suture removal. Less induced astig- matism means better alignment of the tissue, as well as elimination of the "suture factor," Dr. Steinert said. Dr. Steinert said he believes fem- tosecond-enabled PK could be the way of the future. "The days of keratoplasty pa- tients being optical cripples with hard contact lenses are over," he said. "The evolution in techniques and reporting of outcome studies over the next several years will con- tinue to drive improvement in the optical performance of corneal reha- bilitation." Editors' note: Dr. Steinert has financial interests with Abbott Medical Optics (Santa Ana, Calif.), OptiMedica (Sun- nyvale, Calif.), and Revision Optics (Lake Forest, Calif.). ESCRS symposium: IOL power calculations A Tuesday ESCRS symposium fo- cused on innovations in IOL power calculations, with experts from all over the globe giving their insights. Measurements today go far be- yond axial length, according to Wolfgang Haigis, Ph.D., Wuerzburg, Germany, who later gave a talk on IOL power calculations after refrac- tive surgery. "We will need ultrasound biom- etry in the future," Prof Haigis said. IOL calculators, too, are more involved, agreed Jaime Aramberri, M.D., San Sebastian, Spain. "Toric IOL calculations are something more than using a web calculator with our brain set in pause mode," he joked. IOL power calculations after refractive surgery "Corneal power after refractive sur- gery is a problem for IOL calcula- tions," Prof. Haigis said. If the measured corneal radii (K readings) are wrong, then there will be a ra- dius problem. If the wrong radius is entered into an invalid corneal power, it will produce incorrect corneal powers, which will result in continued on page 114

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