Your situation is not that unique. Many have been in your shoes. Check out the Pilot Health section on this forum. If you are able to successfully go through the process and get a Special Issuance First Class and/or SODA, you will be eligible for any major airline. I know several pilots that have been through this and are flying for a major. One guy I know only has one eye! If not already doing so, ALPA ( if applicable) can be a great resource for you.
It will all work out...