In most cases, the vision can be recovered after a surgery for retinal detachment: But if it is not treated, the patient’s vision could be irrevocably lost.
A vitreous detachment is the separation of the vitreous humour from its attachment points on the retina. This causes a sudden appearance of spots in the form of spider webs or flashing lights.
A vitreous hemorrhage is the presence of blood within the eye cavity that is filled with vitreous humor, a clear substance that fills up to two thirds of the eyeball total volume.