Let me introduce an easy-to-explain method.
1. Load a head with working eyes into blender
2. Then load the head with eye problems
View attachment 140085
head2 is a normal head, head3 is a problematic head.
3. Then select1 'head_3_0_eyes' as shown in the picture
4. When you click on the inverted triangle-shaped mesh, a window will pop up where you can select all the meshes that have been loaded so far.
View attachment 140086
5. The mesh of head_2_0_eyes, which has normal eyes, is mesh0 as shown in the photo.
6. Change mesh0.001 in head_3_0_eyes to mesh0 and readjust the position of the eyes to match the head.