"Glaucoma patients undergoing treatment are said to have a rate of progression of approximately 0.6 dB/year, a value between that of normal visual field decay (0.07 dB/year), and untreated glaucoma patients (1.1 dB/year). "

What is normal tonometry readings for dogs? A normal reading is typically considered between 15 mmHg to 25 mmHg for dogs and 17 mmHg to 20 mmHg for cats. If the reading is any higher, your veterinarian may recommend further tests or treatment. https://okcvetcampus.com

Not sure of this is related? https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4176054/