To become invisible you have to change dimension and in doing so you become visible in a different dimension and your eyes would possibly see in that dimension only. The light source may be different in the new dimension if there is any light there. This is the main problem with Hyperspace as light there doesn't exist so navigation is difficult as time also doesn't exist, so if you become invisible and pass into Hyperspace as a result you will be pretty much lost and for all intends and purposes blind.