Sophisticated ablation pattern created by the latest NIDEK excimer laser to treat a highly aberrated cornea post full thickness penetrating keratoplasty for keratoconus. Patient saw 20/40 uncorrected immediately after the procedure ( she had been worse than 20/400 pre laser). The scanning slit, characteristic of Nidek, is used to produce the spherical and cylindric correction. The irregularity treatment is a sophisticated raster generated by a stack of 6 x 1 mm Gaussian apertures selectively masking the laser slit. This mechanism avoids the errors inherent in flying spots and the inefficient deformable mirrors used in competing products.

This video uses time expansion and compression to demonstrate the above mentioned treatment. It is repeated using the light of the laser without supplemental illumination.

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