Sorry to hear of your problems. There is probably more than one issue affecting your current vision.
You did not provide your prescription before surgery, but since your doctor has diagnosed regression, I assume that your myopia (nearsighted, shortsighted) vision was greater than 6.00 diopters. Regression is common with larger refractive error correction or with unusual healing.
The fact that you have regression indicates that you currently have some myopia that is not being corrected by glasses or contact lenses. Even a small amount of uncorrected myopia can cause starbursting, halos around light sources, and poor distance vision quality.
I am assuming that your multiple image vision (ghosting) is in each eye individually, not only when both eyes are open.
If your astigmatism was not fully corrected, astigmatism was induced during surgery, or you have uneven healing, multiple images would be expected and they would probably get worse in low light environments. You also probably notice the ghosting even more when you are looking at an LED light, especially if the LED is red.
Dry eyes will be an underlying problem for all your vision difficulties. Dry eyes can cause astigmatism and exacerbate already existing astigmatism. Dry eyes can cause edema (swelling) of the cornea that can induce regression and astigmatism. We have an article about
Lasik Dry Eye Treatment that you may find interesting.
Have you had a manifest refraction (which is better, one or two?) since your surgery? If you have, what is your current prescription? If you are able, please also provide your prescription before surgery.
If you have a small amount of myopia, don’t be too fast to have enhancement surgery to remove it. At age 40 you are right at the edge of dealing with presbyopia. Presbyopia is when you are not able to change focus to objects near and require reading glasses or bifocals. A small amount of myopia can actually be a good thing. You may want to read about
monovision. Of course, you would want to correct the astigmatism to be able to reduce or eliminate the multiple images.
You probably need a pair of glasses or contacts that fully correct your current refractive error. These will help you function until your healing is complete and you can make a decision about enhancement surgery.