the が in 目が抉られるような痛み


目 **が** 抉られるような痛み

how would it change if i changed it to を? what the difference in nuance?




The difference is more grammatical than semantic.

In 目が抉られる, the subject is 目 whereas, in 目を抉られる, the subject is the person
whose eye is scooped out. So they literally correspond to

  * 目が抉られるような痛み：a pain like an eye being scooped out.
  * 目を抉られるような痛み；a pain like having an eye scooped out.




The difference is more grammatical than semantic.

In 目が抉られる, the subject is 目 whereas, in 目を抉られる, the subject is the person
whose eye is scooped out. So they literally correspond to

  * 目が抉られるような痛み：a pain like an eye being scooped out.
  * 目を抉られるような痛み；a pain like having an eye scooped out.

