I have no idea if oleander might help of not. I do know that you can put drops of oleander extract in the eye. Other things that come to mind which you can apply topically in the eye are colloidal silver, DMSO diluted (which helps dissolve cataracts and cloudiness in some conditions), MSM eyedrops, and eyebright extract. But whether or not those might be good is just guesswork as I am not familiar with the condition. If it were me, I might try using an eye cup filled part way with colloidal silver and with a couple of drops of eyebright, few drops of DMSO and perhaps a few drops of oleander extract. But that would just be me proceeding by "feel", and I must say that I am totally unqualified to make any recommendations on the condition.