Purpose: To demonstrate the use of wavefront-guided ablations to treat post-LASIK re-treatments for patients with irregular astigmatism and central island.
Methods: 10 patients underwent therapeutic ablations to treat post-LASIK visual complications.5 patients presented with different etiologies of irregular astigmatism including de-centration.The other 5 patients presented with central island.The PreVue lens was used for all 10 patients and the WaveScan data was used to re-treat the eyes with the VISX STAR S4 laser.
Results: Patients were followed for one year following re-treatment and 80% of eyes (n=8) improved to 20/20 UCVA.2 eyes showed no immediate post-op marked improvement, but at 1 year one has demonstrated some objective improvement.Of the 8 improved eyes 2 have some regression.Pre- and post-operative initial LASIK data, pre-and post-op re-treatment data including UCVA, BCVA, topography and wavefront maps will all be reviewed.Contrast sensitivity and changes in intra-ocular pressure will also be reviewed.
Conclusion: The VISX CustomVue system can be used safely and effectively to perform therapeutic re-treatments on patients with post-LASIK irregular astigmatism and central island. |
