Thank you for the extensive information. Let us address the issues one at a time. With regards to enhancement surgery following ReLEx® SMILE®, it is usually enhanced by way of PRK as the prescription to correct by then is usually low. PRK, in this case, is able to offer distinct advantages for lower prescription for example, the benefits of a flapless treatment are preserved. LASIK may also be a possible method, however, it involves the creation of a flap which does have its own disadvantages.
Before any enhancement is done, we have to first ensure that the residual refractive errors have been stable over a period of time to avoid enhancing an incorrect power. As such, the manifest refraction will need to be repeated a few times before the surgeon decides a suitable time to proceed with enhancement.
You also mentioned that you experience glares and haloes. Unfortunately, it is not possible to enhance this aspect of the vision away and some elements of glare and haloes may be present. However, this tends to be only experienced in the nighttime and with point sources of light.
To be sure, higher order aberration and residual refraction error are known to occur LASIK, Epi-LASIK and PRK as well.
Finally, it is crucial for you to express your current difficulties with your vision to your eye surgeon and discuss your expectations before moving on with any enhancement surgery.
