I think they just look like that sometimes. I found a lot of images of tigers with significant definition until finding one I could identify.

This is Luca, and his profile doesn’t say anything about a medical condition.

https://www.carerescuetexas.com/meet-the-animals/tigers/luca.html

You can see videos of the cats here:

https://m.youtube.com/@bigcatderek/videos

I think the lighting angle might be doing a lot of the work in the OP image.

e: I actually just want to share some tiger pictures because I like them.