Laser in situ keratomileusis for astigmatism following laser thermal keratoplasty.

We describe 2 cases in which a staged laser in situ keratomileusis procedure was used to treat residual hyperopia and astigmatism after laser thermal keratoplasty. The procedure successfully reduced the spherical equivalent refractive error and residual astigmatism. All eyes maintained their best spectacle-corrected visual acuity and had an uncorrected visual acuity of at least 20/25 at the end of follow-up.

Outcome of corneal and laser astigmatic axis alignment in photoastigmatic refractive keratectomy.

Purpose: To compare the refractive results of laser astigmatic treatment in eyes in which the astigmatic axes of the eye and laser are aligned by limbal marking at the 6 o'clock position and in eyes that are not marked.

Setting: University Hospital and Clinics, Madison, Wisconsin, USA.

Methods: This retrospective study comprised 143 eyes that had photoastigmatic refractive keratectomy with the VISX Star excimer laser.