From the American Academy of Ophthalmology

Using nine years of follow-up data from CIGTS, investigators evaluated the distribution of visual field (VF) change, focusing on those VF tests that demonstrated improvement from a carefully measured baseline. They found that a comparable percentage of participants showed substantial (≥3 dB) VF gains and losses over a 5-year period after treatment initiation. Additionally, VF gain was associated with measures of sound IOP control during treatment – such as lower mean IOP and lower minimum IOP, as well as percentages of IOP measures lower than 16 mm Hg – which is consistent with VF gains being a real effect. American Journal of Ophthalmology, July 2014