Cedric was (almost) a ten-year-old cocker spaniel when glaucoma affected his right eye. He was obviously in great pain & we did not know what was going on. We took him to the vet & the pressure in his eye was extremely high. We put him on a couple of kinds of drops & then took him to an eye specialist.
It was three weeks after his original diagnosis that Cedric had a procedure which involves removing the fluid from the eye & then injecting the eye with something which makes the eye unable to produce any more fluid. No fluid=no pressure=no pain. He got drops for his left eye for 2-1/2 years until he woke up this past St. Patrick’s Day totally blind (& very, very confused).
He had done great with sight in only one eye–he was even able to still chase & catch rodents, but total blindness really threw him for a loop. We took him to the vet the next day & it was confirmed that the glaucoma had gotten the other eye. He went on different drops & the pressure went down from about 60 to 6 the next day. We continued giving him four different kinds of drops, multiple times a day, but the pressure kept increasing.
He eventually had the procedure done in his other eye. Cedric has been a bit slow coming around (he is also hard of hearing), but is getting better all the time. His (full) sister is also blind due to cataracts, but she may still have a tiny bit of light sensitivity. And, since her blindness came on gradually, she had time to adjust & does just fine (a cross between Mr. Magoo & a pinball machine). The attached photos are Cedric the night before he went totally blind.