FEB 25, 2008
Corneal wavefront-guided enhancement with the ORK-CAM system was performed in 29 patients (34 eyes) with high levels of primary coma caused by a previous de-centered refractive surgery procedure.
At six months 73.53 percent of eyes had an SE within ±0.50 D of emmetropia, and patient perception of halos and glare was reduced or eliminated in most cases: 64.71 percent of eyes perceived low levels of halos or did not perceive them and 91.18 percent of eyes had no glare or a low level of glare.
Also, at six months postop, UCVA was statistically significant better (P Z .01, paired Student t test), although the change in BSCVA was not significant. (P Z .83, Wilcoxon test for paired data). Eight eyes (23.53 percent) gained lines of Snellen BSCVA. The loss of two lines in one eye (2.94 percent) was due to the proliferation of a superior epithelial ingrowth, which was responsible for an unpredictable irregularity. In addition, in two eyes with a loss of one line of BSCVA, corneal alterations (significant punctuate keratitis in one eye and proliferation of epithelial ingrowthin the other) were found at the six-month examinations.
The authors conclude that patients with corneal irregularity after keratoplasty or corneal injury would also benefit from this method of treatment.