Both Lasik and epi-Lasik are great options for visual rehabilitation in high myopes. Most people perform Lasik if they are suitable for it, as the visual recovery is much faster, and the time to stable refraction is much faster in comparison.
However not all patients who are high myopes are suitable for Lasik. The main consideration is that of the corneal thickness. If the residual corneal thickness after Lasik is insufficient for stable corneal refraction in the long term, then Epi-Lasik is an alternative that patients consider. Do speak to your ophthalmologist who may be best positioned to advise you on what your options are.