My father was operated for a brain tumor around 25 years back and from the past few years he is getting some eye tests done in every 3 months as advised by the doctors and every time some black spots in the tests are increasing. Consulted many top eye doctors and everyone says its glaucoma and it has no treatment so keep using the prescribed eye drops it will just slow down but can't be cured completely. Few months back one not very famous doctor diagnosed the real cause. He said it's not glaucoma as the eye pressure isn't increasing. If it has been a glaucoma then the eye pressure would have increased. He advised that these black spots are due to the side effects of the radiations of the numerous ct scans done pre and post operation of the brain tumor. When we asked for the comments on this from our regular eye doctor he said this theory is not correct and to be prove it wrong he kept my father under observation for one whole night to monitor the eye pressure and he was surprised that the eye pressure remained stable for the whole night but he had no answer to this. Now my request is if anyone can help me for any good medicine to control this side effect of the radiation or any good doctor who can treat this as my father is loosing his eye sight day by day due to this and now finding it very difficult to see clearly even after the spectacles. His age is 73.