You can try working it out with a Qtip.How would you go about removing that? Q-tip?
Sometimes you may need to press it out, it just depends on how much pus and how it's sitting in the eye.
We used to have a link to another really good video of removing pus from the eye, but I haven't been able to find it in a while, maybe youtube or the creator took it down. In the post below Kim linked another one we refer to. Of course there's other ones on youtube as well.
https://www.backyardchickens.com/th...thache-kinda-what-is-it.1568053/post-26617463