How much is VR safe for health?
How many hours do you spend playing/browsing in PC or cellphone? It has the same effect on the user. I think ARena Space will orient people coming to their park first before allowing them to spend their time with a VR.
There are VR's that can cause damage to your eyes and there are fairly developed VR's that lessens the damage. But in my opinion, If you are spending 3-4 hours playing DOTA or any other games in your pc, it sustains the same damage while using the VR for 3-4 hours. Too much games will hurt your eyes.
See this link I found:
http://virtualrealitypit.com/virtual-reality-headsets-can-cause-permanent-eye-damage/?i=1I think in using VR's you have a self discipline because too much use of anything is not good in your health. So the users/customers are responsible in their own health.