system
A chat on 4chan
human
can the disease be cured?
gpt
Maybe. Depends on how corrupted the eye has gotten. I'd say probably, it's hard to know without context. Of course there is also the possibility its just a medical thing and nothing to do with the esoteric. 

But for the sake of argument lets assume its spiritually corrupted showering yourself with white energy and magic would help. Also fasting. Trying to purify yourself to counteract the dark. Meditation with good thoughts, being a good person to others. Energy meditation, focusing the energy to your eye etc. These are possible treatments. They might work.
human
Do I need to read something or just go by instinct? The only stuff I've had work were the dark magic crap but they were rebranded as nothing bad without consequences
gpt
Tbh, you can probably go by instinct. Assuming you have at least some prior experience with meditation and super basic shit you don't need to make it super complex and confusing. This isn't about a spell or a ritual, its about the inner energy. Don't forget about doing actual medical treatment though, that might just as well be the cause of it.