I will offer links I feel are relevant IMO
I have followed your threads (on multiple sites) and know you have tried a bunch of meds.
Please read links so you understand why each has not worked.
Bacterial infections | The Skeptical Aquarist
Popeye in Fish
^get right to treatments.^
Kanamycin and furan( are the chosen columnaris meds mentioned by link) along with Epsom salt which will help restore proper osmoregulation and relieve pressure on the eye(and internal organs that you don't see).
Order more meds then you need and change a lot of water while treating(regardless of directions ) and redose daily for water removed during changes,along with treatment schedule according to directions.
Good luck an hope others chime in!