Is there any way to protect lenses from scratching on HTC Vive.?

[z10m]

As the title says is there a way to do that.? The lenses aren't flat so normal screen protectors won't adhere properly.
My other half is wearing glasses which will surely scratch the plastic lenses.
Has anyone managed to find protectors that work.?
Thanks.

 

[z10m]

Excellent. Will definitely give it a go. Thanks.