Activities that may involve repeated Valsalva maneuvers were involved in those studies, mainly with wind instrument playing. One older study linked this to visual field defects that correlated with lifelong hours of play but I haven't seen this result replicated.
I have not seen studies though that would examine optic nerve / RNFL thickness changes in wind musicians vs controls. Which means I cannot conclude if the measured transient IOP raises actually result in clinically significant damage.
Do you think the Valsalva maneuver induced, repeated but transient IOP changes patients are exposed to during some activities actually result in glaucomatous optic nerve damage over time?