Can you tell me, are there homeopathic remedies to prevent retinal detachment?

Combined treatment: You need ongoing follow-up with a conventional ophthalmologist for this one. But you're also asking about constitutional treatment with homeopathy for a chronic condition. There are some remedies known for helping with retinal detachment -- such as gelsemium. For best selection in your own case, i suggest working with an experienced classical homeopath to investigate and treat your whole state.