I played the clarinet for 12 years or so, sometimes hours a day. Out of curiosity I read about this and found some studies that claim that eye pressure temporarily increase during play.
Does this IOP elevation mean worsening of myopia?
I didn't, but I imagine you get a lot of nonsense on these forums.
One more thing though if you don't mind - what would you say about the possible damage to the retina after those years of play due to the IOP increase?
They blame the Valsalva maneuver and I tried that - you only feel that much pressure in your neck or head when you seriously mess up your technique or your mouthpiece is blocked.