Why do my torts eyes swell

[Ben02]

I've noticed since I've had my tortoises that when they are about to poop their eyes start to swell. Is this a cause for concern??

Thanks a lot

 

[Gillian M]

@Yvonne G
@Tom

please help. Thank you.

 

[Ben02]

They only stay swollen for a couple seconds until they have passed urates, urine or poop. They also pull there's heads in when doing so.