Can a dorsal augmentation help make my eyes look closer together? (Photos)

 First of all, your nose does not need dorsal augmentation, so it's best to leave well enough alone. The distance between the eyeballs is permanently set by the bony eyesockets and cannot be changed

In theory dorsal augmentation (and derotation of the nasal tip in your case) could help make the eyes appear less wide...although this is not a completely predictable effect. Unfortunately computer imaging can not show whether such an effect could occur because that can only be seen in the front view image of which it is hard to accurately show what happens when the dorsum is elevated. Such an effect is most likely to occur when the dorsal augmentation is significant which in your case would be considered as such.