How long can timolol treatment for suspected glaucoma last?

Not to treat: In most cases of chronic glaucoma in the USA, the disease in young adults is very slowly progressive over many years. In 'Suspect' cases, there is NO Evidence of damage to any vision, and NO evidence of damage to any ocular nerve tissue. In those cases, retesting a couple of times a year , and looking for other causes of the suspicious findings, are more prudent than immediately treating.