With a Prescription of -10.5, Am I a Candidate for Lasik?

Nearsightedness or myopia above 7 diopters is considered high myopia and can be treated effectively on several different laser platforms. Whether you are a candidate for this treatment depends on several factors. Most important is the thickness of your corneal tissue, since more correction removes more tissue and there has to be enough left for safety.
The other important factor is the shape of your eye to begin with. If your eye is in the normal range, then it is more likely that you would be a candidate, and this is measured as k readings values. Also important is that the shape of your eye is normal and symmetric without signs of preexisting weakness in the structure. Also a consideration is the size of your pupils, since this plays a role in your outcome.
Another possibility for a laser correction procedure is surface treatment or PRK. This is less invasive than LASIK so for high corrections we can sometimes perform PRK when there is not enough tissue for LASIK.
As with many of these type of questions, you really need to have an evaluation by an experienced LASIK surgeon who can evaluate and discuss your particular case. There are other options for high myopia, the most popular one is the ICL which is a lens placed inside the eye to correct the myopia rather than having a LASIK procedure.
We have treated a number of patients with a -10.50 prescription by LASIK with excellent results so I would not be discouraged from investigating this further but be prepared that there is a chance that you would not be an ideal candidate.
 

Today's laser technology can effectively treat prescriptions as high as -14. However, the physical characteristics of your eyes are what determine if LASIK is safe for you. Let me explain; thin corneas or corneas with an abnormal shape may make LASIK unsafe for someone like yourself. You should get an evaluation by a LASIK surgeon who can take these measurements accurately. Your long term ocular health depends on it.