Intracorneal ring segment adjustment or exchange can improve visual acuity and refraction in keratoconus eyes if satisfactory results are not achieved after primary implantation, according to a study.
A retrospective series of 26 eyes of 26 patients in whom no improvement of vision was achieved after implantation with two symmetrical Intacs (Addition Technology) were divided into two groups. The first group included eight eyes that underwent exchange with one Ferrara (Mediphacos) with a different arc length, mostly shorter. In the second group, 15 eyes underwent explantation of one segment and
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