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Radial position, spot depression have greatest effect on CK outcome
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NUSA DUA, Indonesia — The amount of refractive correction achieved by conductive keratoplasty treatment is most affected by radial position and the amount of depression for treatment spots, a presenter said here.
 Xiaobing Wang |
"The operation location and deformation induced by surgery have a large impact on corrected power of conductive keratoplasty," Xiaobing Wang, PhD, said during the joint meeting of the Asia-Pacific Academy of Ophthalmology and the American Academy of Ophthalmology. "This conclusion supports the current surgical practice and indicates that the accuracy of surgical operation, surgical response and the postoperative regression have a major impact on the predictability of CK."
Dr. Wang and colleagues used mathematical modeling to show that the amount of refractive correction of CK is linearly proportional to the depression amount of the treatment spot, is approximately inversely proportional to the square of the radius of the ring of treatment spots and is almost independent of the preoperative corneal curvature.
"The result indicates that the amount of refractive correction is mainly related to surgical deformation and operation location. The accuracy of these two parameters is further related to the surgical operation, surgical response and postoperative regression," he said." Therefore, the accuracy of surgical operation, surgical response and postoperative regression have major impacts on the predictability of refractive correction."